콘텐츠 본문
논문 해외 국제전문학술지(SCI급) Data-aided frequency estimation for PSK signaling in frequency-selective fading
- 학술지 구분 국제전문학술지(SCI급)
- 게재년월 2001-07
- 저자명 정의림공동(제1)
- 학술지명 IEEE Journal on selected areas in communications - 직접입력
- 발행처명 IEEE
- 발행국가 해외
- 논문언어 외국어
- 전체저자수 3
논문 초록 (Abstract)
A new data-aided frequency estimator is introduced for phase-shift keying signals transmitted over frequency-selective fading channels. This estimator is developed based on a maximum likelihood criterion. It assumes the use of a special class of pilots, called near-i.i.d. (independent identically distributed) sequences, with impulsive fourth-order moments. With the help of such pilots, the proposed method can estimate frequency offsets without the need for channel information. The pilots of GSM and IS-136 mobile communication systems have been observed as being near-i.i.d., and statistical analysis indicates that the proposed estimate is almost unbiased if the pilot is near-i.i.d. The advantage of the proposed estimator over conventional methods is demonstrated via computer simulation.
