List of publications
1

International Journals (In chronological order):

  1. AS Madhukumar, K Yang, F Chin and AB Premkumar, 2008, Decision Feedback Data Detection in Frequency Domain for Single Carrier Cyclic Prefix Assisted CDMA Systems: A Sequential Quadratic Programming Approach, Accepted for publications, Digital Signal Processing, Academic Press, Elsevier, The Netherlands

  2.  S Majhi, AS Madhukumar and AB Premkumar, 2008, Combining OOK with PSM Modulation for Simple Transceiver of Orthogonal Pulse Based TH-UWB Systems,  Accepted for publication, EURASIP Journal on Wireless Communications and Networking, EURASIP, USA

  3. X Peng, AS Madhukumar, F Chin and TT Tjhung, 2008, 'Block Spreading CDMA: A Simple Structure using Despreading before Equalization for Broadband Uplink Transmission, Accepted for publication, IET Communications, IEE, UK

  4. X Peng, SD Tio, F Chin and AS Madhukumar, 2008, Novel interference cancellation methods for BS-CDMA in uplink broadband mobile communication systems, IEEE Communication Letters, 2008, IEEE, USA, Vol. 12, No. 8, 560-562, Aug 2008

  5. SD Tio, AS Madhukumar and AB Premkumar, 2008, MIMO block spread CDMA systems for broadband wireless communications,  IEEE Transactions on Wireless  Communications, 2008, IEEE, USA, Vol. 7, No. 6, pp. 1987-1992, Jun 2008

  6. L Xin, AB Premkumar and AS Madhukumar, 2008, Pulse shaping functions for UWB systems, IEEE Transactions on Wireless  Communications, 2008, IEEE, USA, Vol. 7, No. 5, pp. 1512-1517, May 2008

  7. E Kurniawan, AS Madhukumar, and F Chin, 2007, Antenna Selection Technique for MIMO-OFDM Systems over Frequency Selective Rayleigh Fading Channel, IET - Communications, IEE, UK, Vol. 1, No.3, pp. 458-463, Jun 2007

  8. S Majhi, AS Madhukumar and AB Premkumar, 2007, Higher order Gaussian doublets for UWB radio transmission: An Interference Perspective,  IEICE Electronics Express, IEICE, Japan, Vol.4, No.8, pp. 238-244, Apr 2007

  9. L Zhiwei, AB Premkumar and AS Madhukumar, 2007, Receive antenna selection for MIMO-SM systems with linear MMSE receivers in the presence of unknown interference, IEEE Transactions on Wireless  Communications, IEEE, USA, Vol.6, No. 3, Mar 2007

  10. AS Madhukumar, Y Zhenzhen and S. Majhi, 2007, Coexisting narrowband and ultra wideband systems: Analysis of power spectral density and in-band interference power, WSEAS Transactions on Communications , World Scientific and Engineering Academy and Society (WSEAS), Vol.6, No. 2, pp 318-325, Feb 2007

  11. S. Majhi, A. S. Madhukumar, and A. B. Premkumar, 2006, Reduction of UWB interference at NB systems based on generalized pulse waveform, IEICE Electronics Express, IEICE, Japan, Vol.3, No.14, pp. 361-367, 2006. 

  12. WS Ho, X Peng, F Chin and AS Madhukumar, 2006, Performance analysis of an over-sampling multi-channel equalization for a multi-Band UWB system,  IEEE Transactions on Wireless Communications, IEEE, USA, Vol. 5, No. 7, pp.1610-1615, Jul 2006  

  13. L. Zhiwei, AB Premkumar and AS Madhukumar, 2006, Least square based receive antenna selection for MIMO spatial multiplexing systems with linear receivers, IEEE Communication Letters, IEEE, USA, Vol. 10, No. 4, pp.254-256, Apr 2006

  14. SD Tio, AS Maddhukumar and AB Premkumar, 2006, Layered space-time architecture of MIMO block spread CDMA systems”, IEEE Communication Letters, IEEE, USA, Vol. 10, No. 2, pp.70-72, Feb 2006

  15. L Zhiwei, AB Premkumar and AS Madhukumar, 2005, Matching pursuit based tap selection technique for UWB channel equalization, IEEE Communication Letters, IEEE, USA, Vol. 9, No. 9, pp. 835-837, Sep 2005

  16. X. Peng, F. Chin and AS Madhukumar, 2005, Performance studies of a VSF-OFCDM system   using a symbol relocated scheme during retransmission, IEE Proceedings - Communications, IEE, Vol. 152, No. 2, pp. 215-220, Apr 2005

  17. L.Zhiwei, AB Premkumar and AS Madhukumar, 2005, Performance evaluation of tap selection based MMSE equalisation for UWB systems, IEICE Electronics Express, IEICE, Japan, Vol. 2 No. 6, pp. 176-181,Mar  2005

  18. AS Madhukumar and Francois Chin, 2004, Enhanced architecture for residue number system based DS-CDMA for high-speed data transmission, IEEE Transactions on Wireless Communications, IEEE, USA, Vol. 3, No 5, pp. 1363-1368, Sept 2004

  19. AS Madhukumar, Francois Chin and Ying-Chang Liang, 2004, A Single carrier code division multiple access communication system with frequency domain equalization, Journal on Wireless Communications and Networking, EURASIP, USA, Vol. 2004, No. 1, pp. 149-160, Aug 2004

  20. K Yang and AS Madhukumar, 2004, A Two dimensional multipath channel estimator for CDMA systems with timing offset errors, IEEE Communications Letters, IEEE, USA, Vol. 8, No. 6, pp.333-336, Jun 2004

  21. AS Madhukumar, F Chin and AB Premkumar, 2003, Incremental redundancy and link adaptation in wireless local area networks using residue number systems, Wireless Personal Communications, Kluwer Publications, USA, Vol. 27, No. 4, pp. 321-336, Dec 2003

  22. TCH Alen, AS Madhukumar and F Chin, 2003, Capacity Enhancement of a Multi-User OFDM System Using Dynamic Frequency Allocation, IEEE Transactions on Broadcasting, IEEE, USA, Vol. 49, No. 4, pp. 344-353, Dec 2003

  23. K Yang, AS Madhukumar and F Chin, 2003, Novel two-dimensional multistage interference cancellation scheme for uplink transmission of single carrier cyclic prefix-assisted CDMA system, IEE Proceedings - Communications, IEE, UK, Vol. 150, No. 4, pp. 287-292, Aug 2003

  24. WS Ho, AS Madhukumar and F Chin, 2003, Peak-to-average power reduction using partial transmit sequences: A suboptimal approach based on dual layered phase sequencing, IEEE Transactions on Broadcasting, IEEE, USA, Vol. 49, No. 2, pp. 225-231, Jun 2003

  25. TZ Mingqian, AS Madhukumar and F Chin, 2003, QRD-RLS adaptive equalizer and its CORDIC-based implementation for CDMA systems, International Journal for Wireless and Optical Communications, World Scientific publishing Co, USA, Vol. 1, No. 1, pp. 25-39, Jun 2003

  26. AB Premkumar and AS Madhukumar, 2002, MAC Units for matched filters in DS-CDMA Systems, IEEE Transactions on Broadcasting, USA, Vol. 28, No. 1, pp. 52-56, Mar 2002

  27. AS Madhukumar, Francois Chin, 2002, Residue number system based multicarrier CDMA system for high-speed broadband wireless access, IEEE Transactions on broadcasting, Vol, 28, No. 1, pp. 46-51, Mar 2002

  28. AS Madhukumar and Francois Chin, 2002, Performance studies of a residue number system based CDMA system over bursty communication channels, Wireless Personal Communications, Kluwer Publications, USA, vol. 22, No. 1, pp.89-102, Jul 2002

  29. AS Madhukumar and AB Premkumar, 2002, An efficient VLSI architecture for the computation of 1-D discrete wavelet transform, Journal of VLSI Signal Processing, Kluwer Publications, USA, Vol. 31, No. 3, pp.231-241

  30. Madhukumar. A. S., Rajendran. S. and Yegnanarayana. B., 1993, Intonation component of a text-to-speech system for Hindi, Computer Speech and Language, Academic Press, UK, vol. 7, pp. 283-301

  31. Yegnanarayana. B, Rajendran. S, Ramachandran. V. R and Madhukumar. A. S, 1994, Significance of knowledge sources for a text-to-speech system for Indian Languages, Sadhana , Academy Proceedings in Engineering Sciences, Bangalore, India, vol. 19(1), pp. 147-170

Text book:

  1. EMK Lai and AS Madhukumar, 2005, Information Theory and Coding, Mc Graw Hill, Singapore, 2005 (ISBN: 007-125021-2 )

In books:

  1. TZ Mingqian, AS Madhukumar and F Chin, 2002, CORDIC based QRD-RLS Adaptive Equalizer for CDMA Systems, Mobile and Wireless Communications (Editor: CG Omidyar), Kluwer Academic Publishers, Boston, pp. 249-256.

  2. AS Madhukumar and B Yegnanarayana, 1993.  A speaker recognition system based on intonation knowledge, In Signal Processing and Communications (Editors: TV Sreenivas and KVS Hari), Tata McGraw-Hill, New Delhi, India, pp. 40-45.

  3. B Yegnanarayana, S Rajendran, SR Rajesh Kumar, VR Ramachandran and AS Madhukumar, 1992.  Knowledge sources for a text-to-speech system in Hindi, In Computer Processing of Asian Languages, (Editor: RMK Sinha), Tata McGraw-Hill, New Delhi, India, pp. 233-242.

  4. B Yegnanarayana, HA Murthy, R Sundar, N Alwar, VR Ramachandran, AS Madhukumar and S Rajendran, 1990.  Development of a text-to-speech system for Indian Languages, In Frontiers in knowledge-based computing (Editors: VP Bhatkar and KM Rege), Narosa Publishers, New Delhi, India, pp. 467 - 476.

International Conferences (In chronological order):

  1. E Kurniawan, AS Madhukumar and F Chin, Exact outage probability analysis of distributed cooperative transmission, In Proceedings, International Symposium on Information Theory and Its Applications (ISITA 2008), New Zealand, Dec 2008

  2. X Peng, SD Tio,  F Chin and AS Madhukumar, MUI cancellation for uplink BS-CDMA in broadband mobile communication systems, In Proceedings, 68th IEEE Vehicular Technology Conference (VTC Fall2008), Calgary, Canada, Sep 2008

  3. S Majhi, W Xiang, AS Madhukumar and AB premkumar, Theoretical capacity analysis of TH_UWB systems for orthogonal pulse based modulation schemes,  In Proceedings, 68th IEEE Vehicular Technology Conference (VTC Fall2008), Calgary, Canada, Sep 2008

  4. E Kurniawan, AS Madhukumar and F Chin, 2008, Relaying power control strategy for 2-hop distributed cooperative communication, In Proceedings, 67th IEEE Vehicular Technology Conference (VTC Spring 2008), Singapore, may 2008

  5. KB Png, X Peng, FW Khong, AS Madhukumar, 2007, Overlap cut frequency domain equalization for two-layer spreading CDMA uplink system, In Proceedings, 6th International Conference on Information, Communications and Signal processing (ICICS 2007), Digital Object Identifier 10.1109/ICICS.2007.4449700, pp. 1-4, Dec 2007.

  6. SH Wong, X Peng, F Chin and AS Madhukumar, 2007, Energy-based equalization of a non-coherent on-off keying UWB system for data rate enhancement, In Proceedings, IEEE International Conference on Ultra Wideband (ICUWB 2007), Digital Object Identifier 10.1109/ICUWB.2007.4380974, pp. 381-386, Sep 2007.

  7. L Zhiwei, AB Premkumar,  AS Madhukumar and X Peng, 2007, Least squares based receive antenna selection for UWB systems in the presence of ISI and NBI, In Proceedings, IEEE International Conference on Ultra Wideband (ICUWB 2007),  Digital Object Identifier 10.1109/ICUWB.2007.4380972, pp. 372-375, Sep 2007.

  8. L Xin, AB Premkumar and AS Madhukumar, 2007, Jitter resistant ultra wideband pulse generation based on wavelet, In Proceedings, IEEE International Conference on Ultra Wideband (ICUWB 2007), Digital Object Identifier 10.1109/ICUWB.2007.4380968, pp. 349-353, Sep 2007

  9. AS Madhukumar, AB Premkumar, X Peng and F Chin, 2007, A simplified approach for peak-to-average power reduction for multicarrier code division multiple access systems, In Proceedings, IEEE 18th International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC 2007), Digital Object Identifier 10.1109/PIMRC.2007.4394309, pp. 1-5, Sep 2007.

  10. E Kurniawan, AS Madhukumar and F Chin, 2007, Successive dirty paper coding: New relaying scheme for cooperative networks, In Proceedings, IEEE 18th International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC 2007), Digital Object Identifier 10.1109/PIMRC.2007.4394860, pp. 1-5, Sep 2007.

  11. E Kurniawan, AS Madhukumar and F Chin, 2007, Performance analysis of distributed space time coding: A geometric approach, In Proceedings, IEEE 18th International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC 2007), Digital Object Identifier 10.1109/PIMRC.2007.4394859, pp. 1-5, Sep 2007.

  12. S Majhi, AS Madhukumar, AB Premkumar, and F Chin, 2007, Modulation schemes based on orthogonal pulses for time hopping ultra wideband radio systems, In Proceedings,  IEEE International Conference on Communications (ICC 2007), Glasgow, UK, May 2007.

  13. S  Majhi, AS Madhukumar, AB Premkumar, and F Chin, 2007, A hybrid M-ary modulation scheme for time hopping UWB communication systems, In Proceedings, IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP 2007), Hawai, US, April 2007.

  14. E  Kurniawan, AS Madhukumar, and F Chin, 2007, Sub optimal antenna selection method for MIMO-OFDM systems, In Proceedings of  65th Vehicular Technology Conference (VTC Spring 2007), Dublin, Ireland, April 2007.

  15. SD Tio, AS Madhukumar, AB Premkumar, and X Peng, 2007, Space-frequency coded BS-CDMA for broadband mobile communication systems, In Proceedings, IEEE Wireless Communications and Networking Conference,  (WCNC 2007), Hong Kong, Mar 2007.

  16. S Majhi, AS Madhukumar, AB Premkumar, and F Chin, 2007, M-ary signaling for ultra wideband communication systems based on pulse position and orthogonal pulse shape modulation, In Proceedings, IEEE Wireless Communications and Networking Conference,  (WCNC 2007), Hong Kong, Mar 2007.

  17. E  Kurniawan, AS Madhukumar, and F Chin, 2006, Exploiting antenna selection gain in IEEE 802.16 broadband wireless access systems, In Proceedings, International Conference on Communication Systems, Singapore, Oct 2006.

  18. E Kurniawan, AS Madhukumar and F Chin, 2006, Performance analysis of broadband wireless access systems with antenna selection, In Proceedings, In Proceedings, 17th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, Finland, Sep  2006

  19. E Kurniawan, AS Madhukumar and F Chin, 2006, Comments on Enhanced space time diversity feature of 802.16e, In Proceedings, Asia-Pacific Conference on Communications 2006, Busan, S Korea, Aug 2006.

  20. L Zhiwei, AB premkumar and AS Madhukumar, 2006, Receive antenna selection for MIMO systems in the presence of unknown interference, In Proceedings, IEEE International Conference on Communications, Vol. 9, pp. 4225-4229, Jun 2006.

  21. Z Lin, AB Premkumar and AS Madhukumar, 2006, Tap selection based multipath channel equalization for UWB systems, In Proceedings, IEEE International Conference on Acoustics, Speech and Signal Processing, Vol. 4, pp. IV 489-IV 492, May 2006.

  22. TS Dharma, A. S. Madhukumar, A. B. Premkumar, and X. Peng, 2006, On channel estimation for layered space-time block spread CDMA systems, In Proceedings, 63rd Vehicular Technology Conference, vol. 4, pp. 1722–1727, May 2006.

  23. Z Lin, AB Premkumar and AS Madhukumar, 2006, Diagonally loaded linear MMSE equalization for UWB multipath channel under limited training sample support, In Proceedings, 63rd Vehicular Technology Conference, vol. 5, pp. 2359–2363, May 2006.

  24. E Kurniawan, AS Madhukumar and F Chin, 2005, Performance analysis of MIMO enabled broadband wireless access system for mobile multimedia applications, In Proceedings, 5th International Conference on Information, Communications and Signal Processing 2005, Bangkok, Thailand, Dec 2005

  25. S Majhi, AS Madhukumar, AB Permkumar and F. Chin, 2005, A novel pulse waveform for low rate ultra wideband radio transmission, In Proceedings, 5th International Conference on Information, Communications and Signal Processing 2005, Bangkok, Thailand, Dec 2005

  26. Z Lin, AB Premkumar and AS Madhukumar, 2005, Applying multistage Weiner filter to UWB multipath channel equalization under limited training sample support, In Proceedings, 5th International Conference on Information, Communications and Signal Processing 2005, Bangkok, Thailand, Dec 2005

  27. TS Dharma, AS Madhukumar, AB Premkumar and Z. Lei, 2005, Performance analysis of space-time block spread systems for CDMA downlink, In Proceedings, IEEE Global Communications Conference 2005, Missouri, USA, Nov  2005.

  28. TS Dharma, AS Madhukumar, AB Premkumar and X. Peng, 2005, Layered Space-Time Architecture for Single-Carrier Block Extended CDMA Systems, In Proceedings, IEEE Vehicular Technology Conference (Fall) 2005, Dallas, USA, Sept 2005

  29. WS Ho, X Peng, AS Madhukumar and F Chin, 2005, Performance Analysis of an Over-Sampling Multi-channel Equalization for a Multi-Band UWB System, In Proceedings, IEEE Vehicular Technology Conference (Fall) 2005, Dallas, USA, Sept 2005

  30. K Yang, AS Madhukumar and AB Premkumar, 2005, Convergence analysis of weight controlled non-linear soft interference cancellation methods for DS-CDMA systems, In Proceedings, IEEE Vehicular Technology Conference (Spring) 2005, Stockholm, Sweden, May 2005.

  31. X Peng, AS Madhukumar, FPS Chin and TT Tjhung, 2005, A simplified transceiver structure for cyclic extended CDMA system with frequency domain equalization, In Proceedings, IEEE Vehicular Technology Conference (Spring) 2005, Stockholm, Sweden, May 2005

  32. Z Lin, AB Premkumar and AS Madhukumar, 2005, Tap selection based MMSE equalization for high data rate uwb communication systems In Proceedings, IEEE International Symposium on Circuits and Systems 2005, Japan, May 2005, pp. 5421-5424

  33. X Peng, FPS Chin and AS Madhukumar, 2005, Performance Studies of a VSF-OFCDM System using a Symbol Relocated Scheme during Retransmission, In Proceedings of the IEEE Wireless Communications and Networking Conference 2005, New Orleans, USA, March 2005, Vol. 2, pp. 1138-1143.

  34. Z Lin, AB Premkumar and AS Madhukumar, 2004, MMSE Detection for High Data Rate UWB MIMO Systems, In Proceedings of the IEEE Vehicular Technology Conference (Fall) 2004, Los Angeles, September 2004  Vol. 2, pp. 1463, 1467

  35. Z Lin, AB Premkumar and AS Madhukumar, 2004, A Combined MMSE Receiver for High Data Rate UWB Systems, In Proceedings of the 9th International Conference on Communication Systems 2004, Singapore, September 2004.

  36. ZZ Ye, AS Madhukumar and F Chin, 2004, Power spectral density and in-band interference power of UWB signals at narrowband systems, In Proceedings of the IEEE International Conference on Communications 2004, Paris, France, June 2004 , Vol. 6, pp. 3561-3565

  37. ZZ Ye, AS Madhukumar, X Peng and F Chin, 2004, Performance analysis of a DS-UWB System in the Presence of Narrowband Interference, In Proceedings of the IEEE Vehicular Technology Conference (Spring) 2004, Milan, Italy, May 2004 , Vol. 5, pp. 2590-2594

  38. TZ Mingqian, AB Premkumar and AS Madhukumar, 2004, Performance investigation of STBC-OFDM with frequency offset and a semi-blind approach for the correction, In Proceedings of the IEEE Vehicular Technology Conference (Spring) 2004, Milan, Italy, May 2004, Vol. 4, pp. 1836-1839

  39. K Yang, AS Madhukumar and F Chin, 2004, Weight-controlled nonlinear successive interference cancellation method for DS-CDMA systems, In Proceedings of the IEEE Vehicular Technology Conference (Spring) 2004, Milan, Italy, May 2004, Vol. 3, pp. 1747-1750

  40. AS Madhukumar, C Chen, K Yang and F Chin, 2004, Comparison of signature sequences for synchronization of UWB systems, In Proceedings of the IEEE Vehicular Technology Conference (Spring) 2004, Milan, Italy, May 2004, Vol. 5, pp. 2585-2589

  41. X. Peng, AS Madhukumar and F Chin, 2004, Performance Studies of Interleaving Schemes for MC-CDMA Systems, In Proceedings of the IEEE Wireless Communications and Networking Conference 2004, Atlanta, USA, March 2004, Vol. 4, pp. 2081-2086

  42. AB Premkumar and AS Madhukumar, 2004, Robust coding environment for speech parameters, In Lectures by Masters in Speech Processing, Hawaii, Jan 2004.

  43. K Yang and AS Madhukumar, 2003, Weight-controlled multistage soft interference cancellation for DS-CDMA systems by constrained SOR method, In Proceedings of the 4th International Conference on Information, Communications and Signal Processing, Singapore, Dec   2003

  44. AS Madhukumar, F Chin and YC Liang, 2003, Cyclic prefix assisted code division multiple access communications system: A new approach for high-rate data transmission, In Proceedings of the 4th International Conference on Information, Communications and Signal Processing, Singapore, Dec 2003

  45. X Peng,WS Ho, AS Madhukumar and F Chin, 2003, A Simplified Coding and Interleaving Method for Multiband UWB Systems: A Performance Comparison, In Proceedings of the 4th International Conference on Information, Communications and Signal Processing, Singapore, Dec   2003

  46. WS Ho, X. Peng, AS Madhukumar, F Chin, 2003, Rapid Acquisition for Multiband UWB Systems: CAZAC vs Barker Sequences,  In Proceedings of the 4th International Conference on Information, Communications and Signal Processing, Singapore, Dec   2003

  47. TZ Mingqian, AS Madhukumar, AB Premkumar and EMK Lai, 2003, Frequency offset correction for Space Time Block Coded OFDM Systems based on maximum Likelihood Estimation, In Proceedings of the 4th International Conference on Information, Communications and Signal Processing, Singapore, Dec   2003

  48. X. Peng, F. Chin and AS Madhukumar, 2003, Performance studies of an over-sampling multi-channel equalizer for a multi-band UWB system, In Proceedings of the IEEE Conference on Ultra Wideband Systems and Technologies, Virginia, USA, Nov 2003.

  49. K Yang, AS Madhukumar and F Chin, 2003, Sotware-dfined decision-feedback multiuser detection in frequency domain for single-carrier and multi-carrier cdma systems –A sequential quadratic programming approach, In Proceedings of the 14th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, Beijing, China,  Sep  2003

  50. WS Ho, AS Madhukumar and F Chin, 2003, Conventional quadrature mixer for impulse radio receivers- Filter design issues, In Proceedings of the 14th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, Beijing, China, Sep  2003

  51. AS Madhukumar, X Peng, Z Lei and F Chin, 2003, Performance studies of a multi-band multicarrier CDMA system with a simplified receiver structure using despreader before equalizer, In Proceedings of the 14th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, Beijing, China, Sep  2003

  52. AS Madhukumar, F Chin and YC Liang, 2003, A novel pilot structure for the downlink transmission of cyclic prefix assisted single carrier CDMA system with frequency domain equalization, In Proceedings of the 2003 IEEE International Symposium on Circuits and Systems, Thailand, Vol. 2, pp. 232-235, May 2003

  53. AS Madhukumar, ZG Ping, TK Seng, YK Jong, TZ Mingqian, TY Hong and F Chin, 2003, Space-time equalizer for advanced 3gpp wcdma mobile terminal: Experimental results, In Proceedings of the 2003 IEEE International Symposium on Circuits and Systems, Thailand, Vol. 2, pp. 228-231, May 2003

  54. AS Madhukumar, K Yang and F Chin, 2003, Optimal and sub-optimal training sequence design for two-dimensional maximum likelihood channel estimator of single-carrier and multi-carrier quasisynchronous CDMA systems, In Proceedings of the 2003 IEEE International Conference on Acoustics, Speech and Signal Processing, Hong Kong, Vol. 4, pp. IV_157-IV_160, Apr 2003

  55. WS Ho, AS Madhukumar and F Chin, 2003, A novel two-layered suboptimal approach to partial transmit sequences, In Proceedings of the 57th IEEE Vehicular Technology Conference, Korea, Apr 2003

  56. K Yang, AS Madhukumar and F Chin, 2003, Multistage Interference Cancellation with Frequency Domain Equalization for Uplink Transmission of Single Carrier Cyclic Prefix Assisted CDMA System, In Proceedings of the IEEE Wireless Communications and Networking Conference, USA, Vol. 1, pp. 585-590, Mar 2003

  57. TCH Alen, AS Madhukumar and F Chin, 2003, Capacity Enhancement of a Multi-User OFDM System Using Dynamic Frequency Allocation, In Proceedings of the IEEE Wireless Communications and Networking Conference, USA, Vol. 3, pp. 1866-1870, Mar 2003

  58. K Yang, AS Madhukumar and F Chin, 2002, Optimal Pilot Design for Multipath Channel   Estimation of Single Carrier Cyclic Prefix Assisted CDMA System, In Proceedings of the 8th International Conference on Communication Systems, Section 1P-04-05, Singapore, Nov 2002.

  59. AS Madhukumar, AB Premkumar and CT Lau, 2002, An error correction scheme for residue number systems based on the principles of maximum likelihood estimation, In Proceedings of 10th NASA Symposium on VLSI Design, USA, pp. 7.3.1-7.3.6, Mar 2002.

  60. AS Madhukumar and F Chin, 2001, Improving bandwidth efficiency for a residue number system based DS-CDMA, In Proceedings of IEEE 54th Vehicular Technology Conference, USA, Vol. 1, pp. 247-251, Oct 2001

  61. AS Madhukumar and F Chin, 2001, Incorporating incremental redundancy and link adaptation in communication systems using residue number systems, In Proceedings of IEEE 54th Vehicular Technology Conference, USA, Vol. 4, pp. 2272-2276, Oct 2001

  62. AS Madhukumar and F Chin, 2001, An efficient method for high-rate data transmission using residue number system based on DS-CDMA, In Proceedings of 12th International Symposium on Personal, Indoor and Mobile Radio Communications, USA, vol. 1, pp. C1-C5, Oct 2001

  63. AS Madhukumar and F Chin, 2001, Design of high-speed MC-CDMA system for broadband mobile radio communications, In Proceedings of 12th International Symposium on Personal, Indoor and Mobile Radio Communications, USA, vol. 2, pp. G1-G5, Oct 2001

  64. AS Madhukumar and F Chin, 2001, High-speed local area networks using residue number systems, In Proceedings of the 3rd International Conference on Information, Communications and Signal Processing, Singapore, 3A2, Oct 2001

  65. AS Madhukumar and F Chin, CT How, 2001, Some practical issues in the design of a generalized multicarrier CDMA system for uplink transmission, In Proceedings of the 3rd International Conference on Information, Communications and Signal Processing, Singapore, 2A1, Oct 2001

  66. AS Madhukumar and F Chin, 2001, Research and Development on third generation mobile communication systems in Singapore, In Proceedings of the 2001 Asia-Pacific Radio Science Conference, Japan, Aug 2001.

  67. AS Madhukumar and F Chin, 2000, Design and performance of residue number system based multicarrier CDMA in frequency-selective fading channels, In Proceedings of the 34th ASILOMAR Conference on Signals, Systems and Computers, USA, Vol. 2, pp. 884-888, Nov 2000.

  68. AS Madhukumar, F Chin and AB Premkumar, 2000, Performance enhancement of a wavelet based multicarrier DS-CDMA system through adaptive interference cancellation, In Proceedings of the 34th ASILOMAR Conference on Signals, Systmes and Computers, USA, Vol. 2, pp. 1421-1425, Nov 2000.

  69. JH Tan, AS Madhukumar and F Chin, 2000, A high rate wireless transmission system using wavelet-based multicarrier CDMA, In Proceedings of the 6th Asia-Pacific Conference of Communications, Korea, vol. 1, pp. 8-12, Nov 2000.

  70. AS Madhukumar, JH Tan, F Chin and YC Liang, 2000, Wavelet based multicarrier DS-CDMA system for broadband mobile communications, In Proceedings of IEEE International Symposium on Wireless Personal Multimedia Communications, Thailand, Nov 2000.

  71. AS Madhukumar and F Chin, 2000, Performance of a residue number system based DS-CDMA system over bursty communication channels, In Proceedings of the IEEE Vehicular Technology Conference, Boston, USA, Vol. 5, pp. 2433-2440, Sept 2000.

  72. AB Premkumar, AS Madhukumar and F Chin, 2000, MAC units for matched filters in DS-CDMA systems, In Proceedings of the 11th International Symposium on Personal, Indoor and Mobile Radio Communications, vol.2, pp.1175-1179, UK, Sept. 2000.

  73. AS Madhukumar and F Chin, 2000, Residue number system based multicarrier CDMA for broadband mobile communication systems, In Proceedings of the 43rd MIDWEST Symposium on Circuits and Systems, USA, Vol. 2, pp. 536-539, Aug 2000.

  74. AS Madhukumar and F Chin, 2000, Code Synchronization and Path Delay Estimation for a CDMA system Using Long Code Masking, In Proceedings of IEEE International Symposium on Circuits And Systems, Geneva, vol.3, pp. 117-120, May 2000.

  75. AS Madhukumar and F Chin, 1999, Significance of Pulse Shaping Functions for a Computationally Efficient DS-CDMA Receiver, In Proceedings of 2nd IEEE International Conference on Information, Communication and Signal Processing, Singapore, Dec 1999.

  76. AS Madhukumar, AB Premkumar and H Abut, 1999, A Noval Method for Wavelet Quantization of Noisy Speech, In Proceedings of the Annual International Conference of IEEE Region 10, Korea, Vol 1, pp. 142-145, Sept. 1999.

  77. AB. Premkumar, EL Ang and AS Madhukumar, 1999, Speech Restoration from LPC Parameters Corrupted by Channel Noise, In Proceedings of the Annual International Conference of IEEE Region 10, Korea, Vol.1, pp.138-141, Sept. 1999.

  78. AS Madhukumar, AB Premkumar and M Bhardwaj, 1998, Pseudo-Floating Point MAC Units for Programmable High Performance QMF banks. In Proceedings of the NASA Symposium on VLSI Design, New Mexico, USA.

  79. AS Madhukumar, AB Premkumar and H Abut, 1997, Wavelet quantisation of noisy speech using constrained Wiener filtering, In Proceedings of the ASILOMAR conference on Signals, Systems and Computers, USA, vol1, pp.39-43.

  80. A Ang, EL Ang, AB Premkumar and AS Madhukumar, 1997, Time-frequency plane Wiener filtering for robust processing of speech signals, In Proceedings of the Annual International Conference of IEEE Region 10, Australia, vol.1, pp. 35-38. A B

  81. AB Premkumar and AS Madhukumar, 1997, Reduction of artifacts resulting from using coarse quantized correlators in SAR imagery, In Proceedings of the Annual International Conference of IEEE Region 10, Australia, vol.1, pp.291-294.

  82. AS Madhukumar and AB Premkumar, 1997, An efficient architecture for the computation of 1-D discrete wavelet transform, In Proceedings of the international conference on information, communications and signal processing, Singapore, vol. 2, pp. 1180-1184.

  83. G Varkey, AS Madhukumar, T. Chelladurai and A. Sankaranarayanan, 1996, Acoustic emission analysis using an array of digital signal processors, In Proceedings of the 10th world conference on Non-destructive Testing, New Delhi, India.

  84. AS Madhukumar, 1994, Issues in the development of a text-to-speech system for Malayalam, In Proceedings of the Kerala Science Congress, Trivandrum, India, pp. 398-401.

  85. G Varkey, PS Janardhanan and AS Madhukumar, 1994, Text reading system for Malayalam, In Proceedings of the ER&DC 94, Trivandrum, India, pp. 3.19-3.24.

  86. B Yegnanarayana,  AS Madhukumar and VR Ramachandran, 1992.  Robust features for applications in speech and speaker recognition, In Proceedings of the European Speech Communication Association Workshop on Speech processing in adverse conditions, Cannes Mandelieu, France.

  87. AS Madhukumar, S Rajendran and B Yegnanarayana, 1991. Significance of prosodic knowledge in a text-to-speech system for Hindi, In Proceedings of the International Congress on Phonetic Sciences, Aix-en-provence, France, vol.  3, pp. 494-497.

  88. AS Madhukumar, S Rajendran., C Chandra Sekhar and B Yegnanarayana, 1991.  Synthesizing Intonation for Speech in Hindi, In Proceedings of the European Conference on Speech Communication and Technology, Genova, Italy, vol. 3, pp. 1153-1156.

  89. AS Madhukumar, S Rajendran and B Yegnanarayana, 1991. Synthesizing intonation for Indian Languages, In Proceedings of the Annual International Conference of IEEE Region 10, New Delhi, India, vol. 2, pp.  224-228.

  90. SR Rajesh Kumar, VR Ramachandran, AS Madhukumar, HA Murthy and B Yegnanarayana, 1990.  A text-to-speech system for Indian languages, Presented at the Seminar on Common Phonetic Matrix for Indian Languages, Central Institute for Indian Languages, March 1990, Mysore, India.

Other Publications:

  1. F  Chin, AS Madhukumar, X  Peng,  Sivanand, “Modulation and Coding Scheme for 802.15.3a”, Proposal for IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs), Doc No: IEEE 802.15-03/107r1, Mar 2003

  2. AS Madhukumar, F Chin, ZG Ping, TK Seng, YK Jong, TZ Mingqian and TY Hong, Space-time equalizer for advanced 3gpp WCDMA mobile terminal: Experimental results, Technical Report, 2002-ADMIRE-TR-002-CI, Oct 2002, Institute for Communications Research, Singapore

  3. TZ Mingqian, AS Madhukumar and F Chin, Space-Time Equalizer Vs Conventional RAKE: A Performance Comparison for 3GPP CDMA System, Technical Report, 2002-ADMIRE-TR-001NR, Aug 2002, Institute for Communications Research, Singapore

  4. AS Madhukumar, Z Lei, NSR Ruwan, X. Peng, 2001, MATLAB Software Package for Simulating 3G-PP W-CDMA Downlink, Technical Report, 2001-IMPAC-TR-001C, Jun 2001, Centre for Wireless Communications, Singapore.

  5. AS Madhukumar and F Chin, 1999, Code Synchronisation Using Long Code Masking for a CDMA System, Technical Report, 1999-SMARTANT-TR-005C, Aug. 1999, Centre for Wireless Communications, Singapore.

  6. AS Madhukumar and F Chin, 1999, Performance Studies of Pulse Shaping Functions For a Computationally Efficient DS-CDMA Receiver, Technical Report, No. 1999-SMARTANT-TR-004C, Apr. 1999, Centre for Wireless Communications, Singapore.

  7. AS Madhukumar and F Chin, 1999, Acquisition and Tracking of Spread Codes for DS-CDMA Reverse Link, Technical Report, No. 1999-SMARTANT-TR-001C, Jan 1999, Centre for Wireless Communications, Singapore.

  8. AS Madhukumar, 1998, Wideband CDMA Testbed Using Coherent Adaptive Antenna Array Diversity. Technical Report, No. CWC-TR-98-014CI, Jul 1998, Centre for Wireless Communications, Singapore.

Patents:

1.       A Method and Apparatus for High Speed Analog to Digital Conversion and Signal Processing for Digital Systems

Inventors:  AB Premkumar, AS Madhukumar and Pham Duc Minh

Status:       Filed for US provisional patent, Application Number: 61/017237

US Filing Date: 28.12. 2007

2.   A system, a transceiver structure for use therein and a method for processing signals in such a system

Inventors:  AS Madhukumar and Francois Chin

Status:       Filed in World Intelligent Property Organization, Publication No: WO/2005/069523    International Application No.:    PCT/SG2004/000021, Publication Date: 28.07.2005 International Filing Date: 20.01.2004

3.   A method and transmitter, receiver and transceiver systems for ultra wideband communication

Inventors:  AS Madhukumar and Francois Chin

Status:       Filed in World Intelligent Property Organization, Publication No:    WO/2005/069506    International Application No.:    PCT/SG2004/000022 Publication Date: 28.07.2005 International Filing Date: 20.01.2004

4.   A Method and apparatus for multicarrier code division multiple access system

Inventors:  AS Madhukumar and Francois Chin

Status:       Filed in World Intelligent Property Organization, Publication No: WO/2004/109953    International Application No.:    PCT/SG2003/000138, Publication Date: 16.12.2004 International Filing Date: 04.06.2003

5.   CDMA System with frequency domain equalization

Inventors:  AS Madhukumar, Ying-Chang Liang, Francois Chin

Status:       United States Patent No: 7,099,299,  Aug 26, 2006, Filed on Mar 04, 2002, Application No: 10/090,370, Filed in World Intelligent Property Organization, Publication No:   WO/2003/081823, International Application No: PCT/SG2003/000031, Publication Date: 02.10.2003 International Filing Date: 25.02.2003

6.   Communication using a modulation method based on residue number systems

Inventors:  AS Madhukumar and Francois Chin

Status:       Filed in World Intelligent Property Organization, Publication No: WO/2002/061962    International Application No.:    PCT/SG2001/000011, Publication Date: 08.08.2002 International Filing Date: 29.01.2001
© A S Madhukumar 2008CONTACTS