Spectral efficiency of equal-rate DS-CDMA systems with multiple transmit antennas

Husheng Li; H. Vincent Poor

doi:10.1109/TWC.2006.256991

Spectral efficiency of equal-rate DS-CDMA systems with multiple transmit antennas

Husheng Li, H. Vincent Poor

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

9 Scopus citations

Abstract

The spectral efficiency of equal-rate DS-CDMA systems with multiple transmit antennas is analyzed. Explicit expressions for the spectral efficiency are obtained in the low and high energy regions and numerical results are presented for the moderate energy region. The performance gains resulting from the use of multiple transmit antennas are discussed. An equation characterizing the diversity-multiplexing tradeoff in this situation is derived. A conclusion that adding more transmit antennas does not necessarily improve the performance with the constraint of equal rate is drawn.

Original language	English (US)
Pages (from-to)	3680-3688
Number of pages	9
Journal	IEEE Transactions on Wireless Communications
Volume	5
Issue number	12
DOIs	https://doi.org/10.1109/TWC.2006.256991
State	Published - Dec 2006

All Science Journal Classification (ASJC) codes

Computer Science Applications
Electrical and Electronic Engineering
Applied Mathematics

Keywords

Direct sequence code division multiple access (DS-CDMA)
Multiple-input multiple-output (MIMO)
Spectral efficiency

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10.1109/TWC.2006.256991

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title = "Spectral efficiency of equal-rate DS-CDMA systems with multiple transmit antennas",

abstract = "The spectral efficiency of equal-rate DS-CDMA systems with multiple transmit antennas is analyzed. Explicit expressions for the spectral efficiency are obtained in the low and high energy regions and numerical results are presented for the moderate energy region. The performance gains resulting from the use of multiple transmit antennas are discussed. An equation characterizing the diversity-multiplexing tradeoff in this situation is derived. A conclusion that adding more transmit antennas does not necessarily improve the performance with the constraint of equal rate is drawn.",

keywords = "Direct sequence code division multiple access (DS-CDMA), Multiple-input multiple-output (MIMO), Spectral efficiency",

author = "Husheng Li and Poor, {H. Vincent}",

note = "Funding Information: Manuscript received January 26, 2005; revised January 14, 2006; accepted March 29, 2006. The associate editor coordinating the review of this paper and approving it for publication was M. Sawahashi. This research was supported in part by the National Science Foundation under Grant No. ANI-03-38807, and in part by the New Jersey Center for Wireless Telecommunications. H. Li is with Qualcomm Inc., CA (email: [email protected]). H. V. Poor is with the Department of Electrical Engineering, Princeton University, Princeton, NJ (email: [email protected]). Digital Object Identifier 10.1109/TWC.2006.05057.",

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doi = "10.1109/TWC.2006.256991",

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AU - Poor, H. Vincent

N1 - Funding Information: Manuscript received January 26, 2005; revised January 14, 2006; accepted March 29, 2006. The associate editor coordinating the review of this paper and approving it for publication was M. Sawahashi. This research was supported in part by the National Science Foundation under Grant No. ANI-03-38807, and in part by the New Jersey Center for Wireless Telecommunications. H. Li is with Qualcomm Inc., CA (email: [email protected]). H. V. Poor is with the Department of Electrical Engineering, Princeton University, Princeton, NJ (email: [email protected]). Digital Object Identifier 10.1109/TWC.2006.05057.

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N2 - The spectral efficiency of equal-rate DS-CDMA systems with multiple transmit antennas is analyzed. Explicit expressions for the spectral efficiency are obtained in the low and high energy regions and numerical results are presented for the moderate energy region. The performance gains resulting from the use of multiple transmit antennas are discussed. An equation characterizing the diversity-multiplexing tradeoff in this situation is derived. A conclusion that adding more transmit antennas does not necessarily improve the performance with the constraint of equal rate is drawn.

AB - The spectral efficiency of equal-rate DS-CDMA systems with multiple transmit antennas is analyzed. Explicit expressions for the spectral efficiency are obtained in the low and high energy regions and numerical results are presented for the moderate energy region. The performance gains resulting from the use of multiple transmit antennas are discussed. An equation characterizing the diversity-multiplexing tradeoff in this situation is derived. A conclusion that adding more transmit antennas does not necessarily improve the performance with the constraint of equal rate is drawn.

KW - Direct sequence code division multiple access (DS-CDMA)

KW - Multiple-input multiple-output (MIMO)

KW - Spectral efficiency

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Spectral efficiency of equal-rate DS-CDMA systems with multiple transmit antennas

Abstract

All Science Journal Classification (ASJC) codes

Keywords

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