Carrier Frequency Offset Compensation with Successive Cancellation in Uplink OFDMA Systems

Author

Yücek, Tevfik ; Arslan, Hüseyin

Author_Institution

Dept. of Electr. Eng., South Florida Univ., Tampa, FL

fYear

2006

Firstpage

1

Lastpage

5

Abstract

Similar to OFDM systems, OFDMA systems also suffer from frequency mismatches between the receiver and the transmitter. However, the fact that each uplink user has a different frequency offset makes the compensation more challenging than that of OFDM systems. This paper proposes successive interference cancellation (SIC) for compensating the frequency offset in the uplink OFDMA systems. A decorrelator is used to remove the inter-carrier interference (ICI) within a user´s signal and successive cancellation is applied to mitigate the multi access interference (MAI) arising due to the frequency difference among uplink users. The proposed algorithm is shown to eliminate the interference and has a manageable complexity.

Keywords

OFDM modulation; decorrelation; frequency division multiple access; intercarrier interference; interference suppression; carrier frequency offset compensation; decorrelator; intercarrier interference; interference cancellation; multiaccess interference; receiver; transmitter; uplink OFDMA systems cancellation; Bandwidth; Feedback; Frequency domain analysis; Frequency estimation; Interference cancellation; Intersymbol interference; Iterative algorithms; Multiple access interference; OFDM; Silicon carbide;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference, 2006. VTC-2006 Fall. 2006 IEEE 64th

Conference_Location

Montreal, Que.

Print_ISBN

1-4244-0062-7

Electronic_ISBN

1-4244-0063-5

Type

conf

DOI

10.1109/VTCF.2006.345

Filename

4109610