A low-complexity CFO compensation technique for interleaved OFDMA system uplink

Author

Mohammadi-Siahboomi, J. ; Omidi, M.J. ; Saeedi-Sourck, Hamid

Author_Institution

Dept. of Electr. & Comput. Eng., Isfahan Univ. of Technol., Isfahan, Iran

fYear

2012

Firstpage

221

Lastpage

225

Abstract

In interleaved orthogonal frequency division multiple access (OFDMA) systems uplink, multiple access interference (MAI) occurs due to different carrier frequency offsets (CFOs) from different users. In this paper, a new low complexity scheme is proposed to compensate CFO at the OFDMA receiver. The proposed scheme maximizes signal to interference ratio (SIR). Simulation results show considerable improvement in comparison to the existing methods in the literature.

Keywords

OFDM modulation; communication complexity; frequency division multiple access; radio links; radio receivers; radiofrequency interference; MAI; OFDMA receiver; SIR; carrier frequency offset; interleaved OFDMA system uplink; interleaved orthogonal frequency division multiple access system; low complexity scheme; low-complexity CFO compensation technique; multiple access interference; signal to interference ratio; Complexity theory; Interference; OFDM; Signal to noise ratio; Simulation; Uplink; carrier frequency offset; inter-carrier interference; interleaved subcarrier allocation; multiple access interference; signal to interference ratio;

fLanguage

English

Publisher

ieee

Conference_Titel

Telecommunications (IST), 2012 Sixth International Symposium on

Conference_Location

Tehran

Print_ISBN

978-1-4673-2072-6

Type

conf

DOI

10.1109/ISTEL.2012.6482987

Filename

6482987