Intercarrier interference cancellation using general phase rotated conjugate transmission for OFDM systems

Authors:
Chin-Liang Wang;Yu-Chih Huang
Affiliations:
Department of Electrical Engineering, Institute of Communications Engineering, National Tsing Hua University, Hsinchu, Taiwan, Republic of China;Department of Electrical and Computer Engineering, Texas A&M University, College Station, TX and Institute of Communications Engineering, National Tsing Hua University, Hsinchu, Taiwan, Republ ...
Venue:
IEEE Transactions on Communications
Year:
2010

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Abstract

In this paper, we propose a general phase rotated conjugate cancellation (PRCC) scheme for intercarrier interference (ICI) cancellation in orthogonal frequency division multiplexing (OFDM) systems. We also derive the optimal phase rotation for this general scheme such that the carrier-to-interference ratio would be maximized. It is shown that the previous conjugate cancellation (CC) scheme is equivalent to a special case of our proposed scheme. The general PRCC scheme not only inherits advantages of the conventional CC scheme, such as backward compatibility with the existing OFDM systems, low receiver complexity, and two-path diversity, but also provides better performance, especially at high frequency offset situations.