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Volume 30 Issue 2
Jan.  2011
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Zhang Yi-wen, Yin Qin-ye, Ding Le. Blind Adaptive Multiuser Receiver for Multirate CDMA Systems[J]. Journal of Electronics & Information Technology, 2008, 30(2): 447-450. doi: 10.3724/SP.J.1146.2006.01010
Citation: Zhang Yi-wen, Yin Qin-ye, Ding Le. Blind Adaptive Multiuser Receiver for Multirate CDMA Systems[J]. Journal of Electronics & Information Technology, 2008, 30(2): 447-450. doi: 10.3724/SP.J.1146.2006.01010

Blind Adaptive Multiuser Receiver for Multirate CDMA Systems

doi: 10.3724/SP.J.1146.2006.01010
  • Received Date: 2006-07-10
  • Rev Recd Date: 2007-01-08
  • Publish Date: 2008-02-19
  • In this paper, an adaptive multiuser receiver for variable spreading length direct-sequence code- division multiple-access systems in multi-path channel is proposed. The signature vectors are estimated by projection onto the intersectant subspaces. Based on the estimated signature vectors, the multiuser detector is constructed. By exploiting the structure of the subspace tracking algorithm, the low-complexity adaptive signature vectors estimator and multiuser receiver are developed. Simulation results demonstrate that the proposed algorithm has the same performance,but lower computational complexity compared with the reference algorithm.
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  • Ottosson T and Svensson A. Multirate schemes in ds/cdmasystems. Proc. IEEE Vehicular Technology Conf., Chicago,IL, July 1995, vol.5: 1006-1010.[2]Chen J and Mitra U. Analysis of decorrelator-basedreceivers for multirate ds/cdma communications[J].IEEETrans. on Veh. Technol.1999, 48(10):1966-1983[3]Choi J and Kim S R. Adaptive mmse receiver for multiratecdma systems[J].IEEE Trans. on Signal Processing.2002,50(10):3098-3106[4]Buzzi S, Lops M, and Tulino A M. Blind adaptive multiuserdetection for asynchronous dual-rate ds/cdma systems[J].IEEE J. Select. Areas Commun.2001, 19(2):233-244[5]Yao Y and Poor H V. A two-layer spreading code schemefor dual-rate ds-cdma systems[J].IEEE Trans. on Commun.2003, 51(6):873-879[6]Huang L, Zheng F C, and Faulkner M. Blind adaptivechannel estimation for dual-rate ds/cdma signals. IEEECommun. Lett., 2002, 6(4): 129-131.[7]Stark H and Yang Y. Vector Space Projections. New York:Wiley, 1998: 33-67.[8]Champagne B and Liu Q G. Plane rotation-based evdupdating schemes for efcient subspace tracking[J].IEEETrans. on Signal Processing.1998, 46(7):1886-1900[9]Sadler D J and Manikas A. Blind reception of multicarrierds-cdma using antenna arrays. IEEE Trans. on WirelessCommun., 2003, 2(10): 1231-1239.
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