상세정보
학술지
A Calibration Scheme for Delay Mismatch Compensation in OFDM-Based Polar Transmitter
- 발행일
- 201012
- 출처
- IEICE Transactions on Communications, v.E93.B no.10, pp.2791-2794
- ISSN
- 0916-8516
- 출판사
- 일본, 전자정보통신학회 (IEICE)
- 협약과제
- 10MI5400, 모바일 단말용 무선랜 베이스밴드 기술 개발, 이석규
- 초록
- This paper presents a calibration scheme for delay mismatch between envelope and phase in the OFDM polar transmitter. An asynchronous delay detection method is proposed to avoid using a complicated signal processing algorithm or synchronous elements which need high clocking rates for detecting small delay mismatch. This scheme uses buffer delay chains to estimate the mismatch and then the estimated delay values are asynchronously stored in registers. It is verified that the proposed scheme well suites application to the OFDM polar transmitter through SPW. Matlab and HDL simulations. It achieves the margin of about 20dB at 20MHz offset, 10dB at 40MHz offset in terms of spectral limit specified in WLAN standard. Copyright © 2010 the Institute of Electronics, Information and Communication Engineers.
- KSP 제안 키워드
- Delay mismatch, Detection Method, Information and communication, Mismatch compensation, Polar transmitter, Signal Processing, delay detection