ISSN 1002-1027  CN 11-2952/G2

Acta scientiarum naturalium Universitatis Pekinensis

Previous Articles     Next Articles

Adaptive CDMA Matched-filtering Receiver

CAI Yuemin, LIU Tie   

  1. Department of Electronics, Peking University, Beijing, 100871
  • Received:1997-05-19 Online:1998-09-20 Published:1998-09-20

Abstract: This paper presents an adaptive matched-filtering receiver for DS/CDMA signals. Under MMSE criterion, the adaptive receiver converges to a conventional single user matched filter for an AWGN channel. For interference and multipath channels, the adaptive receiver achieves optimal detection by interference suppression and multipath combination. This paper presents the analytical and simulation results of the receiver in synchronous and asynchronous multi-user channels. The results show that the adaptive matched-filtering receiver is near-far resistant. By only improving the SNR of expected user, the BER can be decreased to any expected level.