상세정보
학술대회
Carrier Frequency Offset Estimation for OFDM System with Large Oscillator Phase Noise
- 발행일
- 202110
- 출처
- International Conference on Information and Communication Technology Convergence (ICTC) 2021, pp.368-370
- 협약과제
- 21HH1500, 통신재난 및 긴급구조/치안용 대용량 이동형 이동통신 인프라 기술 개발, 이희수
- 초록
- Maximum likelihood method of estimating carrier frequency offset (CFO) through comparing phase differences of consecutive repetition patterns are reliable and convenient method. However, large oscillator phase noise hampers adopting this method in millimeter wave (mmWave) communication systems and terahertz communication systems which are especially vulnerable to phase noise. In this paper, we analyze the cause and the influence of oscillator phase noise which is measured in a mmWave system and propose how this can be overcome. This method requires precise time tracking for each repetition patterns before using them in CFO estimation. This method is inherently adequate for estimating small amount of CFO, but it can effectively cope with large oscillator phase noise of mmWave OFDM communication systems in CFO estimation.
- KSP 제안 키워드
- CFO estimation, Carrier frequency offset estimation, Communication system, Maximum Likelihood method, OFDM Communication, OFDM systems, Oscillator phase noise, Phase Difference, Precise time, Terahertz Communication, millimeter wave(mmWave)