Title :
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
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;
Conference_Titel :
Telecommunications (IST), 2012 Sixth International Symposium on
Conference_Location :
Tehran
Print_ISBN :
978-1-4673-2072-6
DOI :
10.1109/ISTEL.2012.6482987
