2006, Volume 8, Issue 2
Strategic Study of CAE >> 2006, Volume 8, Issue 2
Space-frequency Joint Blind Multi-user Detection Algorithm in Smart Antenna MC-CDMA System
1. Department of communication engineering , Nanjing University of The Posts and Telecommunications , Nanjing 210003 , China
2. Institute of Information Science & Engineering , Henan University of Technology , Zhengzhou 450052 , China
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Abstract
A space-frequency joint blind multi-user adaptive detection algorithm in smart antenna MC-CDMA system is proposed in this paper. It combines the receiving beam-forming in space-domain with combinational detection in frequency-domain and optimizes the detector simultaneously in two dimensions. It can enhance the performance of detection of the system. The bit error probability of the proposed algorithm is also analyzed in this paper. The proposed algorithm is simulated and compared with the two-step algorithm in which the adaptive beam-forming is used first and then the combination in frequency-domain is carried out. Simulation results show that the proposed algorithm is superior to the latter.
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References
[ 1 ] Hara S, Prasad R. Overview of multicarrier CDMA[J].Communications Magazine, IEEE,1997,35(12):126～133 link1
[ 2 ] DengJH, Lin G J, Lee TS.A multistage multicarrier CDMA receiver with blind adaptive MAI suppression [A].Acoustics, Speech, and Signal Processing, Proceedings(ICASSP´01), Vol4[C].2001 IEEE Intermational Conference,2001.2289~2292
[ 3 ] LibertiJC, Raappaort T S. Smart antenna for wireless communications: IS-95 and third generation CDMA applications[M], Prentice Hall NJ,1999
[ 4 ] Hajian M, van de Kasteele N, Ligthart LP. Minimum-span constant modulus array for a smart antenna testbed[A]. Vision, Image and Signal Processing, IEEProceedings, Vol149, Issue 2[C],2002.120~127
[ 5 ] Purwoko A, Attallah s, Zoubir A M. Performance enhancement of adaptive blind multiuser detection for MC-CDMA using antenna arrays[A]. Sensor Array and Multichannel Signal Processing Workshop Proceedings[C],2002,288~292
[ 6 ] Torlak M, Kim SY, Kang J, Xu Guanghan, Li Hang.Performance of MC-CDMA systems using antenna arrays[A]. Signals, Systems, and Computers,1999 Conference Record of the Thirty-Third Asilomar Conference Vol 1[c],1999.179~182
[ 7 ] Tuan LM, Su PV, Kim J, Yoon G. An MMSE-based beamforming algorithm for smart antenna applied to an MC-CDMA system with co-channel interference [A].Communication Systems, ICCS 2002, The 8th International Conference, Vol 2,2002.1252~1256
[ 8 ] Tian Qingjiang, Letaief KB. The performance of multi-carrier CDMA with base station antenna arrays in fading channels [A]. Vehicular Technology Conference Proceedings, VTC2000-Spring Tokyo,2000 IEEE 5lst, Vol2[C],2000.1498~1502
[ 9 ] Xu Changjiang, Feng Guangzeng, Kwak KS.A modified constrained constant modulus approach to blind adaptive multiuser detection[J]. IEEE Tran on comm,2001,49(9):1642~1648 link1
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