The impact of frequency-flat fading on the spectral efficiency of CDMA

S. Shamai; S. Verdú

doi:10.1109/18.923717

The impact of frequency-flat fading on the spectral efficiency of CDMA

S. Shamai, S. Verdú

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

327 Scopus citations

Abstract

The capacity of the randomly spread synchronous code-division multiple-access (CDMA) channel subject to frequency-flat fading is studied in the wide-band limit of large number of users. We find the spectral efficiency as a function of the number of users per chip, the distribution of the flat fading, and the signal-to-noise ratio (SNR), for the optimum receiver as well as linear receivers (single-user matched filter, decorrelator, and minimum mean-square error (MMSE)). The potential improvements due to both decentralized transmitter power control and multiantenna receivers are also analyzed.

Original language	English (US)
Pages (from-to)	1302-1327
Number of pages	26
Journal	IEEE Transactions on Information Theory
Volume	47
Issue number	4
DOIs	https://doi.org/10.1109/18.923717
State	Published - May 2001

All Science Journal Classification (ASJC) codes

Information Systems
Computer Science Applications
Library and Information Sciences

Keywords

Antenna diversity
Channel capacity
Code-division multiple access (CDMA)
Fading channels
Gaussian channels
Multiuser detection
Multiuser information theory
Power control
Spread spectrum

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10.1109/18.923717

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title = "The impact of frequency-flat fading on the spectral efficiency of CDMA",

abstract = "The capacity of the randomly spread synchronous code-division multiple-access (CDMA) channel subject to frequency-flat fading is studied in the wide-band limit of large number of users. We find the spectral efficiency as a function of the number of users per chip, the distribution of the flat fading, and the signal-to-noise ratio (SNR), for the optimum receiver as well as linear receivers (single-user matched filter, decorrelator, and minimum mean-square error (MMSE)). The potential improvements due to both decentralized transmitter power control and multiantenna receivers are also analyzed.",

keywords = "Antenna diversity, Channel capacity, Code-division multiple access (CDMA), Fading channels, Gaussian channels, Multiuser detection, Multiuser information theory, Power control, Spread spectrum",

author = "S. Shamai and S. Verd{\'u}",

note = "Funding Information: Manuscript received December 1, 1999; revised December 10, 2000. This work was supported by the U.S.–Israel Binational Science Foundation, the U.S. Army Research Office, and the U.S. National Science Foundation. S. Shamai is with the Department of Electrical Engineering, Technion–Israel Institute of Technology, Haifa, 32000, Israel (e-mail: [email protected]). S. Verd{\'u} is with the Department of Electrical Engineering, Princeton University, Princeton, NJ 08544 USA (e-mail: [email protected]). Communicated by P. Narayan, Associate Editor for Shannon Theory. Publisher Item Identifier S 0018-9448(01)02884-X.",

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AU - Verdú, S.

N1 - Funding Information: Manuscript received December 1, 1999; revised December 10, 2000. This work was supported by the U.S.–Israel Binational Science Foundation, the U.S. Army Research Office, and the U.S. National Science Foundation. S. Shamai is with the Department of Electrical Engineering, Technion–Israel Institute of Technology, Haifa, 32000, Israel (e-mail: [email protected]). S. Verdú is with the Department of Electrical Engineering, Princeton University, Princeton, NJ 08544 USA (e-mail: [email protected]). Communicated by P. Narayan, Associate Editor for Shannon Theory. Publisher Item Identifier S 0018-9448(01)02884-X.

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AB - The capacity of the randomly spread synchronous code-division multiple-access (CDMA) channel subject to frequency-flat fading is studied in the wide-band limit of large number of users. We find the spectral efficiency as a function of the number of users per chip, the distribution of the flat fading, and the signal-to-noise ratio (SNR), for the optimum receiver as well as linear receivers (single-user matched filter, decorrelator, and minimum mean-square error (MMSE)). The potential improvements due to both decentralized transmitter power control and multiantenna receivers are also analyzed.

KW - Antenna diversity

KW - Channel capacity

KW - Code-division multiple access (CDMA)

KW - Fading channels

KW - Gaussian channels

KW - Multiuser detection

KW - Multiuser information theory

KW - Power control

KW - Spread spectrum

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The impact of frequency-flat fading on the spectral efficiency of CDMA

Abstract

All Science Journal Classification (ASJC) codes

Keywords

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