Low-rank MMSE detector for synchronous DS-CDMA

Xiaodong Cai; Hongya Ge; A.N Akansu

doi:10.1109/ACSSC.1999.831848

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Conference proceeding

Low-rank MMSE detector for synchronous DS-CDMA

Xiaodong Cai, Hongya Ge and A.N Akansu

Conference Record of the Thirty-Third Asilomar Conference on Signals, Systems, and Computers (Cat. No.CH37020), Vol.2, pp.940-944 vol.2

1999

DOI: https://doi.org/10.1109/ACSSC.1999.831848

Abstract

Adaptive signal detection

AWGN

Covariance matrix

Detectors

Eigenvalues and eigenfunctions

Matched filters

Multiaccess communication

Performance gain

Space technology

Wireless communication

The low-rank minimum mean-squared error (MMSE) detector for direct sequence (DS) spread-spectrum code-division multiple-access (CDMA) is proposed. The low-rank linear MMSE detector lies in a subspace of the signal space. We demonstrate that when the dimension of the signal space is lower than the processing gain and the MMSE detector is obtained using the estimated covariance matrix, the low-rank MMSE detector can perform better than the full rank MMSE detector. A subspace tracking algorithm that tracks both the rank and the signal subspace is used to implement the low-rank MMSE detector adaptively.

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Title: Low-rank MMSE detector for synchronous DS-CDMA
Creators: Xiaodong Cai - New Jersey Institute of Technology
Hongya Ge - New Jersey Institute of Technology
A.N Akansu - New Jersey Institute of Technology
Publication Details: Conference Record of the Thirty-Third Asilomar Conference on Signals, Systems, and Computers (Cat. No.CH37020), Vol.2, pp.940-944 vol.2
Publisher: IEEE
Academic Unit: CoE - Electrical & Computer Engineering; College of Engineering
Language: English
Resource Type: Conference proceeding
Record Identifier: 991031725754102976