Noncoherent multiuser detection of DS-CDMA over multipath fading channels

Sau-Hsuan Wu*, Urbashi Mitra, C. C Jay Kuo

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review

1 Scopus citations


The problem of joint channel estimation and multiple access interference suppression for an asynchronous code-division multiple-access system is studied. A low-complexity sliding-window scheme is proposed for channel tracking based on the expectation maximization (EM) algorithm and a noncoherent maximum a posteriori probability (MAP) multi-user detector. By exploiting features of discrete random phase ambiguities of channel estimates using the EM algorithm, the proposed scheme can track channel phase even if the channel is in a deep fade. In conjunction with iterative soft interference cancellation, the proposed detector can achieve near single user system performance with polynomial complexity in the number of users.

Original languageEnglish
Pages (from-to)2525-2529
Number of pages5
JournalIEEE International Conference on Communications
StatePublished - 30 Aug 2004
Event2004 IEEE International Conference on Communications - Paris, France
Duration: 20 Jun 200424 Jun 2004


Dive into the research topics of 'Noncoherent multiuser detection of DS-CDMA over multipath fading channels'. Together they form a unique fingerprint.

Cite this