Asymptotic analysis of improved linear receivers for BPSK-CDMA subject to fading

Antonia Maria Tulino; Sergio Verdú

doi:10.1109/49.942516

Asymptotic analysis of improved linear receivers for BPSK-CDMA subject to fading

Antonia Maria Tulino, Sergio Verdú

Research output: Contribution to journal › Article › peer-review

49 Scopus citations

Abstract

In this paper, we design and analyze a new class of linear multiuser detectors, which can be applied when the users employ BPSK modulation and the fading coefficients of the active users are known at the receiver (such as base-station demodulation). The tools of asymptotic distribution of the spectrum of large random matrices are used to show that relative to the classical minimum mean-square-error (MMSE) receiver, the output signal-to-noise ratio (SNR) improves by halving the number of effective interferers and adding 3 dB to the input SNR. We also propose sensible approximations to the proposed linear receivers so as to facilitate their use in CDMA systems that employ long codes.

Original language	English (US)
Pages (from-to)	1544-1555
Number of pages	12
Journal	IEEE Journal on Selected Areas in Communications
Volume	19
Issue number	8
DOIs	https://doi.org/10.1109/49.942516
State	Published - Aug 2001

All Science Journal Classification (ASJC) codes

Computer Networks and Communications
Electrical and Electronic Engineering

Keywords

Decorrelator
Fading channels
MMSE
Multiuser detection
Random spreading sequence
Spectral efficiency

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10.1109/49.942516

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title = "Asymptotic analysis of improved linear receivers for BPSK-CDMA subject to fading",

abstract = "In this paper, we design and analyze a new class of linear multiuser detectors, which can be applied when the users employ BPSK modulation and the fading coefficients of the active users are known at the receiver (such as base-station demodulation). The tools of asymptotic distribution of the spectrum of large random matrices are used to show that relative to the classical minimum mean-square-error (MMSE) receiver, the output signal-to-noise ratio (SNR) improves by halving the number of effective interferers and adding 3 dB to the input SNR. We also propose sensible approximations to the proposed linear receivers so as to facilitate their use in CDMA systems that employ long codes.",

keywords = "Decorrelator, Fading channels, MMSE, Multiuser detection, Random spreading sequence, Spectral efficiency",

author = "Tulino, {Antonia Maria} and Sergio Verd{\'u}",

note = "Funding Information: Manuscript received December 15, 2000; revised May 24, 2001. This research is supported in part by CNR Grant 23.07.00 and NFS Grant NCR-0074277. This work was presented at the Annual Allerton Conference on Communication, Control, and Computing, October 4–6, 2000.",

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AU - Tulino, Antonia Maria

AU - Verdú, Sergio

N1 - Funding Information: Manuscript received December 15, 2000; revised May 24, 2001. This research is supported in part by CNR Grant 23.07.00 and NFS Grant NCR-0074277. This work was presented at the Annual Allerton Conference on Communication, Control, and Computing, October 4–6, 2000.

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N2 - In this paper, we design and analyze a new class of linear multiuser detectors, which can be applied when the users employ BPSK modulation and the fading coefficients of the active users are known at the receiver (such as base-station demodulation). The tools of asymptotic distribution of the spectrum of large random matrices are used to show that relative to the classical minimum mean-square-error (MMSE) receiver, the output signal-to-noise ratio (SNR) improves by halving the number of effective interferers and adding 3 dB to the input SNR. We also propose sensible approximations to the proposed linear receivers so as to facilitate their use in CDMA systems that employ long codes.

AB - In this paper, we design and analyze a new class of linear multiuser detectors, which can be applied when the users employ BPSK modulation and the fading coefficients of the active users are known at the receiver (such as base-station demodulation). The tools of asymptotic distribution of the spectrum of large random matrices are used to show that relative to the classical minimum mean-square-error (MMSE) receiver, the output signal-to-noise ratio (SNR) improves by halving the number of effective interferers and adding 3 dB to the input SNR. We also propose sensible approximations to the proposed linear receivers so as to facilitate their use in CDMA systems that employ long codes.

KW - Decorrelator

KW - Fading channels

KW - MMSE

KW - Multiuser detection

KW - Random spreading sequence

KW - Spectral efficiency

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Asymptotic analysis of improved linear receivers for BPSK-CDMA subject to fading

Abstract

All Science Journal Classification (ASJC) codes

Keywords

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