Performance of space-frequency combining at the antenna array of a MC-CDMA system

In this paper, a multicarrier code-division multiple-access (MC-CDMA) system employing antenna array at base station with quaternary phase shift keying (QPSK) modulation is proposed. This receiver adopts a space-frequency two-dimensional (2-D) Rake receiver structure. Based on the detailed analysis of the interference characteristics of the proposed system, the bit error rate (BER) performance of the 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 combining. Simulation results verify the analysis and show that better performance is achieved for the proposed antenna array MC-CDMA system than the corresponding single antenna approach.

[1]  Matti Latva-aho,et al.  Multiuser receivers for CDMA systems in Rayleigh fading channels , 2000, IEEE Trans. Veh. Technol..

[2]  Inder J. Gupta,et al.  Dependence of adaptive array performance on conventional array design , 1982 .

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

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

[5]  Andrew J. Viterbi,et al.  On the capacity of a cellular CDMA system , 1991 .

[6]  Thomas Kailath,et al.  Capacity improvement with base-station antenna arrays in cellular CDMA , 1994 .

[7]  S. Weinstein,et al.  Data Transmission by Frequency-Division Multiplexing Using the Discrete Fourier Transform , 1971 .

[8]  K. Fazel,et al.  On the Performance of Convolutionally-Coded CDMA/OFDM for Mobile Communication System , 1993 .

[9]  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.

[10]  Masao Nakagawa,et al.  Performance of orthogonal multicarrier CDMA in a multipath fading channel , 1994, IEEE Trans. Commun..

[11]  M. Latva-aho,et al.  Modified LMMSE receiver for DS-CDMA-Part I. Performance analysis and adaptive implementations , 1998, 1988 IEEE 5th International Symposium on Spread Spectrum Techniques and Applications - Proceedings. Spread Technology to Africa (Cat. No.98TH8333).

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

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

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

[15]  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.

[16]  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.

[17]  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,.

[18]  Zhenhui Tan,et al.  A cumulant-based 2D-RAKE receiver for CDMA system over frequency-selective fading channels , 2003, The 57th IEEE Semiannual Vehicular Technology Conference, 2003. VTC 2003-Spring..

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

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

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

[22]  Jeffrey H. Reed,et al.  Geometrically based statistical channel model for macrocellular mobile environments , 1996, Proceedings of GLOBECOM'96. 1996 IEEE Global Telecommunications Conference.

[23]  Americo Brajal,et al.  Orthogonal multicarrier techniques applied to direct sequence spread spectrum CDMA systems , 1993, Proceedings of GLOBECOM '93. IEEE Global Telecommunications Conference.

[24]  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..

[25]  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..