Performance analysis of joint switched diversity and adaptive modulation

Haewoon Nam; Young Chai Ko; Mohamed Slim Alouini

doi:10.1109/T-WC.2008.070288

Performance analysis of joint switched diversity and adaptive modulation

Haewoon Nam, Young Chai Ko, Mohamed Slim Alouini

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

20 Citations (Scopus)

Abstract

In this paper, a simple and practical system based on a switched diversity scheme with adaptive modulation is presented. This system provides a reduced number of channel estimation while offering the optimum spectral efficiency given by a selection diversity system. In addition, the switching threshold is easily manipulated so as to make an efficient use of the trade-off between spectral efficiency and channel estimation overhead. An extension of switched diversity into a multiuser scheduling is later also considered. This switch-based multiuser access scheme results in a lower average feedback load than that for the optimal selection-based multiuser scheme. Numerical results show that we can obtain a trade-off between spectral efficiency and the feedback load by choosing the switching threshold appropriately.

Original language	English
Article number	4657324
Pages (from-to)	3780-3790
Number of pages	11
Journal	IEEE Transactions on Wireless Communications
Volume	7
Issue number	10
DOIs	https://doi.org/10.1109/T-WC.2008.070288
Publication status	Published - 2008 Oct

Keywords

Adaptive modulation
Multiuser diversity
Switch-based multiuser scheduling
Switched diversity

ASJC Scopus subject areas

Computer Science Applications
Electrical and Electronic Engineering
Applied Mathematics

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10.1109/T-WC.2008.070288

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title = "Performance analysis of joint switched diversity and adaptive modulation",

abstract = "In this paper, a simple and practical system based on a switched diversity scheme with adaptive modulation is presented. This system provides a reduced number of channel estimation while offering the optimum spectral efficiency given by a selection diversity system. In addition, the switching threshold is easily manipulated so as to make an efficient use of the trade-off between spectral efficiency and channel estimation overhead. An extension of switched diversity into a multiuser scheduling is later also considered. This switch-based multiuser access scheme results in a lower average feedback load than that for the optimal selection-based multiuser scheme. Numerical results show that we can obtain a trade-off between spectral efficiency and the feedback load by choosing the switching threshold appropriately.",

keywords = "Adaptive modulation, Multiuser diversity, Switch-based multiuser scheduling, Switched diversity",

author = "Haewoon Nam and Ko, {Young Chai} and Alouini, {Mohamed Slim}",

note = "Funding Information: Manuscript received March 14, 2007; revised June 23, 2007; accepted July 2, 2007. The associate editor coordinating the review of this paper and approving it for publication was X. Xia. This work was supported by the center for Broadband OFDM Mobile Access (BrOMA) at POSTECH through the ITRC program of the Korean MIC, supervised by IITA (IITA-2005-C1090-0502-0008). This paper was presented in part at IEEE International Symposium on Information Theory, Nice, France, June 2007 and Signal Processing on Wireless Communications Workshop, London, U.K., June 2007.",

year = "2008",

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doi = "10.1109/T-WC.2008.070288",

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AU - Nam, Haewoon

AU - Ko, Young Chai

AU - Alouini, Mohamed Slim

N1 - Funding Information: Manuscript received March 14, 2007; revised June 23, 2007; accepted July 2, 2007. The associate editor coordinating the review of this paper and approving it for publication was X. Xia. This work was supported by the center for Broadband OFDM Mobile Access (BrOMA) at POSTECH through the ITRC program of the Korean MIC, supervised by IITA (IITA-2005-C1090-0502-0008). This paper was presented in part at IEEE International Symposium on Information Theory, Nice, France, June 2007 and Signal Processing on Wireless Communications Workshop, London, U.K., June 2007.

PY - 2008/10

Y1 - 2008/10

N2 - In this paper, a simple and practical system based on a switched diversity scheme with adaptive modulation is presented. This system provides a reduced number of channel estimation while offering the optimum spectral efficiency given by a selection diversity system. In addition, the switching threshold is easily manipulated so as to make an efficient use of the trade-off between spectral efficiency and channel estimation overhead. An extension of switched diversity into a multiuser scheduling is later also considered. This switch-based multiuser access scheme results in a lower average feedback load than that for the optimal selection-based multiuser scheme. Numerical results show that we can obtain a trade-off between spectral efficiency and the feedback load by choosing the switching threshold appropriately.

AB - In this paper, a simple and practical system based on a switched diversity scheme with adaptive modulation is presented. This system provides a reduced number of channel estimation while offering the optimum spectral efficiency given by a selection diversity system. In addition, the switching threshold is easily manipulated so as to make an efficient use of the trade-off between spectral efficiency and channel estimation overhead. An extension of switched diversity into a multiuser scheduling is later also considered. This switch-based multiuser access scheme results in a lower average feedback load than that for the optimal selection-based multiuser scheme. Numerical results show that we can obtain a trade-off between spectral efficiency and the feedback load by choosing the switching threshold appropriately.

KW - Adaptive modulation

KW - Multiuser diversity

KW - Switch-based multiuser scheduling

KW - Switched diversity

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IS - 10

M1 - 4657324

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Performance analysis of joint switched diversity and adaptive modulation

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Keywords

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