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Unified DC Offset Cancellation and I/Q Regeneration with Carrier Phase Recovery in Five-Port Junction based Direct Receivers  

Park, Hyung-Chul (Hanbat National University, Dept. of Information, Communication, and Computer Engineering)
Lim, Hyung-Sun (Samsung Advanced Institute of Technology, Embedded systems solution Lab.)
Yu, Jong-Won (Korea Advanced Institute of Science and Technology, Dept. of Electrical Engineering & Computer Science)
Publication Information
Journal of the Institute of Electronics Engineers of Korea TC / v.44, no.6, 2007 , pp. 64-70 More about this Journal
Abstract
This paper presents a novel unified DC offset cancellation and I/Q regeneration for five-port junction based direct receivers. It utilizes the symmetry characteristics of the single-frequency continuous-wave (CW) signal, making it possible that the proposed method can be used regardless of carrier phase offset. The proposed method eliminates the additional DC offset cancellation and reduces the I/Q regeneration parameter estimation time. Since the proposed method employs a single-frequency CW signal independent of the modulation scheme, five-port junction based direct receivers can be used for the demodulation of orthogonal frequency-division multiplexing and continuous phase modulation as well as phase shift-keying.
Keywords
coherent demodulation; LMS;
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