A decision feedback CDMA receiver with partially adaptive interference suppression

Gau Joe Lin*, Ta-Sung Lee, Chan Choo Tan

*Corresponding author for this work

Research output: Contribution to conferencePaperpeer-review

Abstract

A novel CDMA receiver with adaptive multiple access interference (MAI) and narrowband interference (NBI) suppression is proposed for reverse link signal reception over multipath channels. The design of the receiver involves the following procedure. First, adaptive correlators are constructed based on the generalized side-lobe canceller (GSC) scheme to collect the multipath signals and suppress strong MAI and time-varying NBI. In particular, partial adaptivity is incorporated into the GSC for reduced complexity processing. A simple combiner with channel estimation then gives the symbol decisions. In order to enhance the performance of the adaptive correlators, a decision aided scheme is introduced which subtracts the reconstructed signal from the input data of the GSC, leading to improved output SINR and convergence. The proposed CDMA receiver is evaluated through simulations, and the results show that it can outperform the conventional MMSE receiver designed for time-invariant interference.

Original languageEnglish
Pages110-113
Number of pages4
DOIs
StatePublished - 1 Dec 2001
Event2001 IEEE Workshop on Statitical Signal Processing Proceedings - Singapore, Singapore
Duration: 6 Aug 20018 Aug 2001

Conference

Conference2001 IEEE Workshop on Statitical Signal Processing Proceedings
CountrySingapore
CitySingapore
Period6/08/018/08/01

Fingerprint Dive into the research topics of 'A decision feedback CDMA receiver with partially adaptive interference suppression'. Together they form a unique fingerprint.

Cite this