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Performance Gain Analysis of Dynamic Carrier Allocation Using Order Statistics
Younghyun JEON Sungho JEON Sanghoon LEE
Publication
IEICE TRANSACTIONS on Communications
Vol.E89B
No.11
pp.31433147 Publication Date: 2006/11/01 Online ISSN: 17451345
DOI: 10.1093/ietcom/e89b.11.3143 Print ISSN: 09168516 Type of Manuscript: LETTER Category: Wireless Communication Technologies Keyword: multiuser diversity, spectral diversity, dynamic channel allocation, order statistics, OFDMA, OFDM, diversity gain,
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Summary:
It is well known that the diversity gain attained by DCA (Dynamic Channel Allocation) is generally very high over OFDM (Orthogonal Frequency Division Multiplexing)based broadband networks. This paper introduces a numerical approach for measuring the performance gain afforded by DCA. In the mathematical analysis, the property of order statistics is adopted to derive the upper bound of the expected throughput via the use of DCA. In the simulation, it was possible to achieve a gain of 5 dB by exploiting multiuser and spectral diversities when the number of users is 16 and the total number of subcarriers is 256.

