Effects of Array Weight Errors on Interference Cancellation Receiver in Uplink Synchronous and Asynchronous DS-CDMA Systems

ETRI Journal

关键词: uplink synchronous transmission;    DS-CDMA;    parallel interference cancellation;    antenna array;    Array weight error;   

Others  :  1185059
DOI  :  10.4218/etrij.04.0703.0012

【 摘 要 】

This paper investigates the impacts of array weight errors (AWE) in an antenna array (AA) on a parallel interference cancellation (PIC) receiver in uplink synchronous and asynchronous direct sequence code division multiple access (DS-CDMA) systems. The performance degradation due to an AWE, which is approximated by a Gaussian distributed random variable, is estimated as a function of the variance of the AWE. Theoretical analysis, confirmed by simulation, demonstrates the tradeoffs encountered between system parameters such as the number of antennas and the variance of the AWE in terms of the achievable average bit error rate and the user capacity. Numerical results show that the performance of the PIC with the AA in the DS-CDMA uplink is sensitive to the AWE. However, either a larger number of antennas or uplink synchronous transmissions have the potential of reducing the overall sensitivity, and thus improving its performance.

   

【 参考文献 】

• [1]N. Mohamed and J. Dunham, "A Low Complexity Combined Antenna Array and Interference Cancellation DS-CDMA Receiver in Multipath fading channels," IEEE J. Select. Area Comm., vol. 20, no. 2, Feb. 2002, pp. 248-256.
• [2]L. Tao and K.B. Letaief, "Multiuser Interference Cancellation with a Two-Dimensional RAKE Receiver for DS/CDMA Communications," Proc. IEEE VTC’00, 2000, pp. 1110-1114.
• [3]W. Ye and A.M. Haimovich, "Performance of Cellular CDMA with Cell Site Antenna Arrays, Rayleigh Fading, and Power Control Error," IEEE Trans. Comm., vol. 48, no. 7, July 2000, pp. 1151-1159.
• [4]V. Ghazi-Moghadam and M. Kaveh, "A CDMA Interference Canceling Receiver with an Adaptive Blind Array," IEEE J. Select. Area Comm., vol. 16, no. 8, Oct. 1998, pp. 1542-1554.
• [5]L.C. Godara, B.R. Tomiuk, N.C. Beaulieu, and A.A. Abu-Dayya, "Application of Antenna Arrays to Mobile Communication, Part II: BEAM-Forming and Direction-of-Arrival Considerations," Proc. IEEE, vol. 85, no. 8, Aug. 1997, pp. 1195-1245.
• [6]E.K. Hong, S.H. Hwang, K.J. Kim, and K.C. Whang, "Synchronous Transmission Technique for the Reverse Link in DS-CDMA Terrestrial Mobile System," IEEE Trans. Comm. vol. 47, no. 11, Nov. 1999, pp. 1632-1635.
• [7]S.H. Hwang and D.K. Kim, "Performance of Reverse-Link Synchronous DS-CDMA System on a Frequency-Selective Multipath Fading Channel with Imperfect Power Control," EURASIP J. App. Sig. Proc., vol. 2002, no. 8, Aug. 2002, pp. 797-806.
• [8]3GPP, TR25.854, Uplink Synchronous Transmission Scheme, May 2001 (ftp://ftp.3gpp.org/).
• [9]IEEE 802.20 C802.20-03/29, Smart antenna and MC-SCDMA, Apr. 2003.
• [10]L. Hanzo, L.-L. Yang, E.-L. Kuan, and K. Yen, Single- and Multicarrier DS-CDMA, John Wiley & IEEE Press, 2003.
• [11]W. Sun, S.H. Hwang, D.K. Kim, and K.C. Whang, "Performance of Parallel Interference Cancellation with Reverse-Link Synchronous Transmission Technique for DS-CDMA System in Multipath Fading Channel," IEICE Trans. Comm., vol. E85-B, no. 8, Aug. 2002, pp. 16
• [12]Y.S. Kim, S.H. Hwang, D.K. Cho, and K.C. Whang, "Performance of Antenna Arrays with Reverse-Link Synchronous Transmission Technique for DS-CDMA System in Multipath Fading Channels," Springer-Verlag Heidelberg, Lecture Notes in Computer Science, vol. 2402,
• [13]Rec. ITU-R TG8-1, Guideline for Evaluation of Radio Transmission Technologies for IMT-2000, Rec. M.1225, 1997.
• [14]D. Parsons, The Mobile Radio Propagation Channels, Addison-Wesley, 1992.
• [15]J.G. Proakis, Digital Communications, McGraw-Hill, New York, 1983.
• [16]G. Raleigh, S.N. Diggavi, A.F. Naguib, and A. Paulraj, "Characterization of Fast Fading Vector Channels for Multi-Antenna Communication Systems," Proc. IEEE ACSSC’94, 1994, pp. 853-857.
• [17]Y. Kim and W. Yoon, "Efficiently Combined Structure of Smart Antenna and Interference Canceller Using Symbol Reliability," IEE Electronics Lett., vol. 36, no. 18, Aug. 2000, pp. 1583-1584.
• [18]Y. Dai, G. Xue, T. Le-Ngoc, and J. Weng, "Combined Adaptive Interference Cancellation with Antenna Array for CDMA Systems," Proc. IEEE GLOBECOM’00, 2000, pp. 143-146.
• [19]A.F. Naguib, Adaptive Antennas for CDMA Wireless Networks, PhD dissertation, Stanford Univ., Stanford, CA, 1996.
• [20]Y.C. Yoon, R. Kohno, and H. Imai, "A Spread Spectrum Multiple Access System with Cochannel Interference Cancellation for Multipath Fading Channels," IEEE J. Select. Area Comm., vol. 11, no. 7, Sept. 1993, pp. 1067-1075.
• [21]M.B. Pursley and D.V. Sarvate, "Evaluation of correlation parameters for periodic sequences," IEEE Trans. Inform. Theory, vol. IT-23, no. 4, July 1977, pp. 508-513.
• [22]T. Eng and L.B. Milstein, "Coherent DS-CDMA Performance in Nakagami Multipath Fading," IEEE Trans. Comm., vol. 43, no. 2/3/4, Feb./Mar./Apr., 1995, pp. 1134-1143.
• [23]J.G. Andrews and T.H. Meng, "Optimum Power Control for Successive Interference Cancellation with Imperfect Channel Estimation," IEEE Trans. Wireless Comm., vol. 2,?no. 2,?Mar. 2003, pp. 375-383.
• [24]K.R. Dandekar, H. Ling, and G. Xu, "Effect of Mutual Coupling on Direction Finding in Smart Antenna Applications," IEE Electronics Lett., vol. 36, no. 22, Oct. 2000, pp. 1889-1891.