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A Calibration Scheme for Delay Mismatch Compensation in OFDM-Based Polar Transmitter
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- Authors
- Hun-sik KANG, Min-Lee HWANG, Jin LEE, Sok-kyu LEE, Hae-wook CHOI, Sin-Chong PARK
- Issue Date
- 2010-12
- Citation
- IEICE Transactions on Communications, v.E93.B, no.10, pp.2791-2794
- ISSN
- 0916-8516
- Publisher
- 일본, 전자정보통신학회 (IEICE)
- Language
- English
- Type
- Journal Article
- Abstract
- 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 Keywords
- Delay mismatch, Detection Method, Information and communication, Mismatch compensation, Polar transmitter, Signal Processing, delay detection