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A Novel Compensation Scheme for I/Q Mismatch in an OFDM Direct-Conversion Architecture  

Bae, Jung-Hwa (고려대학교 전자컴퓨터공학과 무선통신시스템연구실)
Park, Jin-Woo (고려대학교 전자컴퓨터공학과 무선통신시스템연구실)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.31, no.12C, 2006 , pp. 1265-1272 More about this Journal
Abstract
This paper proposes a compensation method that can alleviate the problem of I/Q mismatch generated in the direct-conversion receiver of OFDM systems. In the proposed method, the amount of I/Q mismatch is estimated using null-carriers in transmitted signals, and it is subtracted from received symbols to suppress I/Q mismatch effects. Simulations show experiments that the proposed method can effectively eliminate the I/Q mismatch effects.
Keywords
I/Q mismatch; I/Q imbalance; OFDM; Direct-conversion; Null-carrier;
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