A decision feedback CDMA receiver with partially adaptive interference suppression

Gau Joe Lin; Ta-Sung Lee; Chan Choo Tan

doi:10.1109/SSP.2001.955234

A decision feedback CDMA receiver with partially adaptive interference suppression

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

^*Corresponding author for this work

Department of Electrical and Computer Engineering

Research output: Contribution to conference › Paper › peer-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 language	English
Pages	110-113
Number of pages	4
DOIs	https://doi.org/10.1109/SSP.2001.955234
State	Published - 8 Aug 2001
Event	2001 IEEE Workshop on Statitical Signal Processing Proceedings - Singapore, Singapore Duration: 6 Aug 2001 → 8 Aug 2001

Conference

Conference	2001 IEEE Workshop on Statitical Signal Processing Proceedings
Country/Territory	Singapore
City	Singapore
Period	6/08/01 → 8/08/01

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10.1109/SSP.2001.955234

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title = "A decision feedback CDMA receiver with partially adaptive interference suppression",

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.",

author = "Lin, {Gau Joe} and Ta-Sung Lee and Tan, {Chan Choo}",

year = "2001",

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doi = "10.1109/SSP.2001.955234",

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T1 - A decision feedback CDMA receiver with partially adaptive interference suppression

AU - Lin, Gau Joe

AU - Lee, Ta-Sung

AU - Tan, Chan Choo

PY - 2001/8/8

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N2 - 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.

AB - 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.

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T2 - 2001 IEEE Workshop on Statitical Signal Processing Proceedings

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A decision feedback CDMA receiver with partially adaptive interference suppression

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