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Ricean model based design and analysis of sub-channelized orthogonal frequency division multiplexing

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1 Author(s)
Seokhyun Yoon ; Dept. of Electron. Eng., Dankook Univ., Yongin

The dynamic resource allocation and throughput behavior of a sub-channelized multiuser orthogonal frequency division multiplexing (OFDM) system are considered. In a sub- channelized OFDM, a set of sub-carriers are reserved for use as the unit of channel quality information (CQI) feedback, user- multiplexing and power allocation. To design and analyze the sub-channelized OFDM system, we first model the empirical SNR distribution over a sub-channel as Ricean and develop a two-step resource allocation algorithm that utilizes the estimated Ricean parameters as the statistical CQI. For two generic subchannel structures, namely the contiguous and the distributed, we explore the connection between the sub-channel structure and the network throughput in a sub-channelized OFDM.

Published in:

Wireless Communications, IEEE Transactions on  (Volume:7 ,  Issue: 7 )

Date of Publication:

July 2008

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