A new asymptotic analysis of throughput enhancement from selection diversity using a high SNR approach in multiuser systems

Authors:
Woohyun Seo;Hyungjoon Song;Jemin Lee;Daesik Hong
Affiliations:
Information and Telecommunication Lab., Dept. of Electrical and Electronic Eng., Yonsei Univ., Seoul, Korea;Information and Telecommunication Lab., Dept. of Electrical and Electronic Eng., Yonsei Univ., Seoul, Korea;Information and Telecommunication Lab., Dept. of Electrical and Electronic Eng., Yonsei Univ., Seoul, Korea;Information and Telecommunication Lab., Dept. of Electrical and Electronic Eng., Yonsei Univ., Seoul, Korea
Venue:
IEEE Transactions on Wireless Communications
Year:
2009

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Abstract

This letter presents our study of throughput enhancement achieved by multiuser diversity (MUDiv) in a multiuser system using a new asymptotic approach. The MUDiv gain is evaluated by deriving a new asymptotic formula with a closed form, which is flexible to the number of MUDiv orders. To do this, we simplify a Puiseux series instead of a extreme value theory used in the previous researches. The formula shows that the MUDiv gain is independent of the signal-to-noise ratio, and it is applied to analyze proportional fair scheduling. Finally, this analysis is verified using Monte-Carlo simulations of scheduling algorithms.