On the rate versus diversity trade-off in multi-channel wireless transmission systems

Haewoon Nam, Young-Chai Ko, Mohamed Slim Alouini

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In this paper we first consider conventional multichannel systems with fixed-power variable-rate transmission of independent data streams as a function of channel variations. In the conventional systems, no data is transmitted through the channels whose received signal strength is below a certain cut off threshold. We then propose a new hybrid adaptive modulation and diversity scheme for multi-channel transmission systems. The proposed hybrid scheme attempts to increase the overall spectral efficiency by (i) transmitting redundantly information symbols through the deeply faded channels that are not to be used in conventional multi-channel systems and then (ii) diversity combining these signals at the receiver end. We calculate the spectral efficiency of the newly proposed hybrid scheme and compare it to the spectral efficiency of (i) the conventional system and (ii) a benchmark optimal but complex joint adaptive and diversity scheme that maximizes the overall spectral efficiency. We show, with the help of some selected numerical examples, that the proposed hybrid scheme offers almost the same spectral efficiency as the optimal scheme with much reduced complexity.

Original languageEnglish
Title of host publicationIEEE Wireless Communications and Networking Conference, WCNC
Pages1922-1927
Number of pages6
DOIs
Publication statusPublished - 2007 Nov 27
Event2007 IEEE Wireless Communications and Networking Conference, WCNC 2007 - Kowloon, China
Duration: 2007 Mar 112007 Mar 15

Other

Other2007 IEEE Wireless Communications and Networking Conference, WCNC 2007
CountryChina
CityKowloon
Period07/3/1107/3/15

Fingerprint

Adaptive modulation

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Nam, H., Ko, Y-C., & Alouini, M. S. (2007). On the rate versus diversity trade-off in multi-channel wireless transmission systems. In IEEE Wireless Communications and Networking Conference, WCNC (pp. 1922-1927). [4204536] https://doi.org/10.1109/WCNC.2007.360

On the rate versus diversity trade-off in multi-channel wireless transmission systems. / Nam, Haewoon; Ko, Young-Chai; Alouini, Mohamed Slim.

IEEE Wireless Communications and Networking Conference, WCNC. 2007. p. 1922-1927 4204536.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Nam, H, Ko, Y-C & Alouini, MS 2007, On the rate versus diversity trade-off in multi-channel wireless transmission systems. in IEEE Wireless Communications and Networking Conference, WCNC., 4204536, pp. 1922-1927, 2007 IEEE Wireless Communications and Networking Conference, WCNC 2007, Kowloon, China, 07/3/11. https://doi.org/10.1109/WCNC.2007.360
Nam H, Ko Y-C, Alouini MS. On the rate versus diversity trade-off in multi-channel wireless transmission systems. In IEEE Wireless Communications and Networking Conference, WCNC. 2007. p. 1922-1927. 4204536 https://doi.org/10.1109/WCNC.2007.360
Nam, Haewoon ; Ko, Young-Chai ; Alouini, Mohamed Slim. / On the rate versus diversity trade-off in multi-channel wireless transmission systems. IEEE Wireless Communications and Networking Conference, WCNC. 2007. pp. 1922-1927
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