Reduced-rank minimum variance receiver for asynchronous CDMA systems
Document Type
Conference Proceeding
Publication Date
12-3-2000
Abstract
Minimum variance receiver has recently been proposed to blindly suppress the multiple-access interference in CDMA channels by minimizing the receiver's output variance based on constrained optimization. In this paper, we consider the reduced-rank minimum variance receiver in asynchronous CDMA channels. The reduced-rank detector uses a reduced rank approximation of the covariance matrix of the received data. When the covariance is known, the reduced-rank receiver cannot perform better than the full-rank receiver. However, when the covariance matrix is estimated, we demonstrate that the optimal reduced-rank receiver outperforms the full-rank receiver. The reduced-rank receiver is implemented adaptively using a subspace tracking algorithm; its performance is better than the conventional full-rank recursive least-square adaptive receiver.
Identifier
0033684612 (Scopus)
Publication Title
IEEE International Conference on Communications
First Page
1030
Last Page
1033
Volume
2
Recommended Citation
Cai, Xiaodong; Akansu, Ali N.; and Ge, Hongya, "Reduced-rank minimum variance receiver for asynchronous CDMA systems" (2000). Faculty Publications. 15423.
https://digitalcommons.njit.edu/fac_pubs/15423
