The minimum variance receiver has been previously proposed to suppress the multiple-access interference (MAI) blindly in CDMA channels by minimizing the receiver's output variance based on constrained optimization. In this paper, we propose a low-complexity minimum variance receiver that achieves almost the same performance as the high-complexity one with the optimal constraint vector. The proposed receiver is a RAKE receiver followed by an equal gain combiner. The impulse response of the filter in each finger is obtained by the minimum variance criterion. The low-rank minimum variance receiver uses a reduced-rank approximation of the estimated data covariance matrix. Its performance is better than the full-rank version of the receiver. The receiver is implemented adaptively with the same structure as a generalized sidelobe canceler.
|Title of host publication
|CommunicationsSensor Array and Multichannel Signal Processing
|Institute of Electrical and Electronics Engineers Inc.
|Number of pages
|Published - 2000
|25th IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 2000 - Istanbul, Turkey
Duration: Jun 5 2000 → Jun 9 2000
|ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings
|25th IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 2000
|6/5/00 → 6/9/00
All Science Journal Classification (ASJC) codes
- Signal Processing
- Electrical and Electronic Engineering