A low-complexity ICI mitigation method based on generalized data-allocation for OFDM systems

This paper describes an ICI self-cancellation method based on the generalized ed data-allocation of (1,- beta ) for OFDM systems. To improve the ICI mitigation for the higher frequency offset, we propose a mid-point search algorithm to generate the sub-optimal parameter beta for maximizing the carri...

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Bibliographic Details
Main Authors: Chun-Chyuan Chen, Jiun-Ming Wu, Yong-Jhen Wu
Format: Conference Proceeding
Language:English
Subjects:
CIR
Computer simulation
Digital video broadcasting
Equalizers
Frequency domain analysis
frequency offset
Hardware
ICI
Local oscillators
OFDM
Streaming media
Time domain analysis
Transmitters
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Summary:This paper describes an ICI self-cancellation method based on the generalized ed data-allocation of (1,- beta ) for OFDM systems. To improve the ICI mitigation for the higher frequency offset, we propose a mid-point search algorithm to generate the sub-optimal parameter beta for maximizing the carrier-to-interference ratio (CIR). The CIR performances with different ICI self-cancellation schemes were also investigated by computer simulations. According to the simulation results, the CIR performance of the proposed ICI self-cancellation scheme is better than that of the conventional ICI self-cancellation scheme and is nearly the same as that of the ICI self-cancellation scheme for the optimal parameter beta . Additionally, the proposed ICI self-cancellation scheme has a dramatically reduced hardware complexity in comparison with the ICI self-cancellation scheme for the optimal parameter beta .
DOI:10.1109/ICCT.2008.4716193