Journal of the Institute of Electronics Engineers of Korea TC (대한전자공학회논문지TC)

The Institute of Electronics and Information Engineers (대한전자공학회)
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Unified DC Offset Cancellation and I/Q Regeneration with Carrier Phase Recovery in Five-Port Junction based Direct Receivers

Five-port 접합을 이용한 RF 수신기를 위한 동시 DC 오프셋 제거와 I/Q 신호 재생 알고리즘

  • 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)
  • 박형철 (한밭대학교 정보통신컴퓨터공학부) ;
  • 임형선 (삼성종합기술원 Embedded systems solution Lab.) ;
  • 유종원 (한국과학기술원 전자전산학과)
  • Published : 2007.06.25
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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.

본 논문에서는 five-port 접합을 이용한 RF 수신기를 위한 새로운 동시 DC 오프셋 제거와 I/Q 신호 재생 알고리즘을 제안한다. 제안한 방법에서는 단일주파수 CW 신호를 사용하는데, 제안한 방법이 반송파 위상 오프셋에 상관없이 사용할 수 있도록 한다. 또한 제안한 방법은 추가적인 DC 오프셋 제거 기능이 필요 없고, I/Q 재생 파라미터 추정시간을 크게 줄인다. 제안한 방법에서는 변조방식에 상관이 없는 단일주파수 CW 신호를 사용하므로, five-port 접합을 이용한 RF 수신기가 위상편이변조 (PSK) 뿐 만 아니라, 연속위상변조 (CPM)와 직교주파수다중분할 (OFDM)에도 사용될 수 있다.

Keywords

References

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