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An Interference Cancellation Scheme for Carrier Frequency Offsets Compensation in the Uplink of OFDMA systems

A successive interference cancellation (SIC) structure is proposed for multiuser interference cancellation (MUI) due to carrier frequency offsets (CFOs) in the uplink of orthogonal frequency division multiple access (OFDMA) systems. The proposed architecture adopts a circular convolution to suppress the impacts caused by CFOs. This paper demonstrates that, with 2 iterations, the SIC has better performance than that of the parallel interference cancellation (PIC), but system complexity is only 1/2K, where K is the number of users in the uplink of OFDMA system. This study also shows that system complexity can be significantly reduced if proper approximation is made.

Identiferoai:union.ndltd.org:NSYSU/oai:NSYSU:etd-0820106-012028
Date20 August 2006
CreatorsWang, Sen-Hung
ContributorsDer-Feng Tseng, Tsang-Yi Wang, Tsung-Hsien Liu, none, Chih-Peng Li
PublisherNSYSU
Source SetsNSYSU Electronic Thesis and Dissertation Archive
LanguageEnglish
Detected LanguageEnglish
Typetext
Formatapplication/pdf
Sourcehttp://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0820106-012028
Rightsrestricted, Copyright information available at source archive

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