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

^*Corresponding author for this work

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

20 Scopus citations

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 (US)
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
State	Published - Oct 2008
Externally published	Yes

Keywords

Adaptive modulation
Multiuser diversity
Switch-based multiuser scheduling
Switched diversity

ASJC Scopus subject areas

Applied Mathematics
Electrical and Electronic Engineering
Computer Science Applications

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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}",

year = "2008",

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

language = "English (US)",

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T1 - Performance analysis of joint switched diversity and adaptive modulation

AU - Nam, Haewoon

AU - Ko, Young Chai

AU - Alouini, Mohamed Slim

PY - 2008/10

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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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JO - IEEE Transactions on Wireless Communications

JF - IEEE Transactions on Wireless Communications

IS - 10

M1 - 4657324

ER -

Performance analysis of joint switched diversity and adaptive modulation

Abstract

Keywords

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