Noncoherent multiuser detection of DS-CDMA over multipath fading channels

Sau-Hsuan Wu; Urbashi Mitra; C. C Jay Kuo

doi:10.1109/ICC.2004.1312987

Noncoherent multiuser detection of DS-CDMA over multipath fading channels

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

^*Corresponding author for this work

Department of Electrical and Computer Engineering

Research output: Contribution to journal › Conference article › peer-review

1 Scopus citations

Abstract

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 language	English
Pages (from-to)	2525-2529
Number of pages	5
Journal	IEEE International Conference on Communications
Volume	5
DOIs	https://doi.org/10.1109/ICC.2004.1312987
State	Published - 30 Aug 2004
Event	2004 IEEE International Conference on Communications - Paris, France Duration: 20 Jun 2004 → 24 Jun 2004

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abstract = "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.",

author = "Sau-Hsuan Wu and Urbashi Mitra and Kuo, {C. C Jay}",

year = "2004",

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AU - Wu, Sau-Hsuan

AU - Mitra, Urbashi

AU - Kuo, C. C Jay

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Y1 - 2004/8/30

N2 - 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.

AB - 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.

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U2 - 10.1109/ICC.2004.1312987

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M3 - Conference article

AN - SCOPUS:4143127903

SN - 0536-1486

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JO - IEEE International Conference on Communications

JF - IEEE International Conference on Communications

T2 - 2004 IEEE International Conference on Communications

Y2 - 20 June 2004 through 24 June 2004

ER -

Noncoherent multiuser detection of DS-CDMA over multipath fading channels

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