Performance Analysis of MT-CDMA System with Antenna Array in a Multipath Fading Channel

In this paper, we propose a multitone code-division multiple-access (MT-CDMA) system employing antenna array at base station with quaternary phase shift keying modulation (QPSK) modulation. Based on the detailed analysis of interference characteristics the BER performance of the proposed MT-CDMA system is provided. With regard to spatial domain combining, the optimum and suboptimum combining weight is derived while the suboptimum set of weights is simplified on sense of that only the knowledge of array vector of desired user alone is sufficient for the optimum combining. Simulation results verify the analysis and show that better performance is achieved for the proposed antenna array system than single antenna MT-CDMA approach.

[1]  Weihua Zhuang,et al.  Hybrid TDOA/AOA mobile user location for wideband CDMA cellular systems , 2002, IEEE Trans. Wirel. Commun..

[2]  Arogyaswami Paulraj,et al.  Performance of Wireless CDMA with M-ary Orthogonal Modulation and Cell Site Antenna Arrays , 1996, IEEE J. Sel. Areas Commun..

[3]  Per Zetterberg,et al.  The angular aspect of wideband modelling and measurements , 1996, Proceedings of ISSSTA'95 International Symposium on Spread Spectrum Techniques and Applications.

[4]  John G. Proakis,et al.  Digital Communications , 1983 .

[5]  Don J. Torrieri,et al.  Performance of Direct-Sequence Systems with Long Pseudonoise Sequences , 1992, IEEE J. Sel. Areas Commun..

[6]  J. H. Winters,et al.  Effect of fading correlation on adaptive arrays in digital wireless communications , 1993, Proceedings of ICC '93 - IEEE International Conference on Communications.

[7]  J.C. Liberti.  Measuring and modeling spatial radio channels for smart antenna systems , 1998, IEEE Antennas and Propagation Society International Symposium. 1998 Digest. Antennas: Gateways to the Global Network. Held in conjunction with: USNC/URSI National Radio Science Meeting (Cat. No.98CH36.

[8]  Abu B. Sesay,et al.  Performance analysis of MT-CDMA system with diversity combining , 2001, 2001 MILCOM Proceedings Communications for Network-Centric Operations: Creating the Information Force (Cat. No.01CH37277).

[9]  Ramjee Prasad,et al.  Overview of multicarrier CDMA , 1997, IEEE Commun. Mag..

[10]  Harold Vincent Poor,et al.  Blind joint equalization and multiuser detection in dispersive MC-CDMA/MC-DS-CDMA/MT-CDMA channels , 2002, MILCOM 2002. Proceedings.

[11]  Hamid Aghvami,et al.  Performance of optimum and suboptimum combining at the antenna array of a W-CDMA system , 1999, IEEE J. Sel. Areas Commun..

[12]  Wei Yang,et al.  A cumulant based DOA estimation for S-CDMA with decorrelator in spatial colored noise , 2002, IEEE Seventh International Symposium on Spread Spectrum Techniques and Applications,.

[13]  Ramjee Prasad,et al.  An overview of multi-carrier CDMA , 1996, Proceedings of ISSSTA'95 International Symposium on Spread Spectrum Techniques and Applications.

[14]  M. Bellanger.  Adaptive filter theory: by Simon Haykin, McMaster University, Hamilton, Ontario L8S 4LB, Canada, in: Prentice-Hall Information and System Sciences Series, published by Prentice-Hall, Englewood Cliffs, NJ 07632, U.S.A., 1986, xvii+590 pp., ISBN 0-13-004052-5 025 , 1987 .

[15]  S. Haykin,et al.  Adaptive Filter Theory , 1986 .

[16]  Chan Kyu Kim,et al.  Performance of a wireless MC-CDMA system with an antenna array in a fading channel: reverse link , 2000, IEEE Trans. Commun..

[17]  Laurence B. Milstein,et al.  Performance of multicarrier DS CDMA systems , 1996, IEEE Trans. Commun..