Power allocation and spectral efficiency of DS-CDMA systems in fading channels with fixed QoS-part II: Multiple-rate case

Husheng Li; H. Vincent Poor

doi:10.1109/TWC.2006.1687776

Power allocation and spectral efficiency of DS-CDMA systems in fading channels with fixed QoS-part II: Multiple-rate case

Husheng Li, H. Vincent Poor

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

1 Scopus citations

Abstract

Power allocation results for equal-rate systems developed in Part I are extended to multiple-rate systems. For both systems with and without channel state information at the transmitter (CSIT), conditions for the optimality of successive interference cancellation combined with minimum mean square error multiuser detection (SIC+MMSE) are obtained. When CSIT is available, the optimal decoding order is discussed for optimal SIC+MMSE and two sub-optimal decoding schemes. Explicit expressions for the spectral efficiency parameters in the low or high energy regions are also obtained.

Original language	English (US)
Article number	1687776
Pages (from-to)	2529-2538
Number of pages	10
Journal	IEEE Transactions on Wireless Communications
Volume	5
Issue number	9
DOIs	https://doi.org/10.1109/TWC.2006.1687776
State	Published - Sep 2006
Externally published	Yes

All Science Journal Classification (ASJC) codes

Computer Science Applications
Electrical and Electronic Engineering
Applied Mathematics

Keywords

Decoding order
Direct sequence code division multiple access (DS-CDMA)
Minimum mean square error (MMSE)
Multiuser detection
Spectral efficiency
Successive interference cancellation (SIC)

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10.1109/TWC.2006.1687776

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title = "Power allocation and spectral efficiency of DS-CDMA systems in fading channels with fixed QoS-part II: Multiple-rate case",

abstract = "Power allocation results for equal-rate systems developed in Part I are extended to multiple-rate systems. For both systems with and without channel state information at the transmitter (CSIT), conditions for the optimality of successive interference cancellation combined with minimum mean square error multiuser detection (SIC+MMSE) are obtained. When CSIT is available, the optimal decoding order is discussed for optimal SIC+MMSE and two sub-optimal decoding schemes. Explicit expressions for the spectral efficiency parameters in the low or high energy regions are also obtained.",

keywords = "Decoding order, Direct sequence code division multiple access (DS-CDMA), Minimum mean square error (MMSE), Multiuser detection, Spectral efficiency, Successive interference cancellation (SIC)",

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

note = "Funding Information: Manuscript received June 29, 2004; revised July 12, 2005 and February 9, 2006; accepted March 24, 2006. The associate editor coordinating the review of this paper and approving it for publication was K. B. Lee. 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.",

year = "2006",

month = sep,

doi = "10.1109/TWC.2006.1687776",

language = "English (US)",

volume = "5",

pages = "2529--2538",

journal = "IEEE Transactions on Wireless Communications",

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T1 - Power allocation and spectral efficiency of DS-CDMA systems in fading channels with fixed QoS-part II

T2 - Multiple-rate case

AU - Li, Husheng

AU - Poor, H. Vincent

N1 - Funding Information: Manuscript received June 29, 2004; revised July 12, 2005 and February 9, 2006; accepted March 24, 2006. The associate editor coordinating the review of this paper and approving it for publication was K. B. Lee. 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.

PY - 2006/9

Y1 - 2006/9

N2 - Power allocation results for equal-rate systems developed in Part I are extended to multiple-rate systems. For both systems with and without channel state information at the transmitter (CSIT), conditions for the optimality of successive interference cancellation combined with minimum mean square error multiuser detection (SIC+MMSE) are obtained. When CSIT is available, the optimal decoding order is discussed for optimal SIC+MMSE and two sub-optimal decoding schemes. Explicit expressions for the spectral efficiency parameters in the low or high energy regions are also obtained.

AB - Power allocation results for equal-rate systems developed in Part I are extended to multiple-rate systems. For both systems with and without channel state information at the transmitter (CSIT), conditions for the optimality of successive interference cancellation combined with minimum mean square error multiuser detection (SIC+MMSE) are obtained. When CSIT is available, the optimal decoding order is discussed for optimal SIC+MMSE and two sub-optimal decoding schemes. Explicit expressions for the spectral efficiency parameters in the low or high energy regions are also obtained.

KW - Decoding order

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

KW - Minimum mean square error (MMSE)

KW - Multiuser detection

KW - Spectral efficiency

KW - Successive interference cancellation (SIC)

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JO - IEEE Transactions on Wireless Communications

JF - IEEE Transactions on Wireless Communications

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ER -

Power allocation and spectral efficiency of DS-CDMA systems in fading channels with fixed QoS-part II: Multiple-rate case

Abstract

All Science Journal Classification (ASJC) codes

Keywords

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