ISSSE 1998, International Symposium on Signals, Systems, and Electronics, September 29-October 2, 1998, Pisa, Italy
We present a new adaptive implementation of the linear minimum MSE receiver (LMMSER) for asynchronous DS-CDMA. We show that, in the case of multipath propagation, the optimal LMMSER can be decomposed as a bank of filters followed by maximal-ratio combining of the filtered multipath components, as in conventional RAKE receivers. Each filter in the bank can be adapted by a classical “blind” algorithm, based on the constrained minimization of the mean output energy. Then, the combining coefficients can be estimated by inserting pilot symbols, as in conventional pilot-symbol assisted modulation. Simulations show the effectiveness of the proposed algorithm
Type:
Conference
City:
Pisa
Date:
1998-09-29
Department:
Communication systems
Eurecom Ref:
2263
Copyright:
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