Reduced-rank minimum variance receiver for asynchronous CDMA systems

Xiaodong Cai, Ali N. Akansu, Hongya Ge

Research output: Contribution to conferencePaperpeer-review


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.

Original languageEnglish (US)
Number of pages4
StatePublished - 2000
Event2000 IEEE International Conference on Communications - New Orleans, LA, USA
Duration: Jun 18 2000Jun 22 2000


Other2000 IEEE International Conference on Communications
CityNew Orleans, LA, USA

All Science Journal Classification (ASJC) codes

  • Computer Networks and Communications
  • Electrical and Electronic Engineering


Dive into the research topics of 'Reduced-rank minimum variance receiver for asynchronous CDMA systems'. Together they form a unique fingerprint.

Cite this