標題: | Symbol time synchronization method for OFDM systems |
作者: | Chin, Wen-Long Chen, Sau-Gee |
公開日期: | 29-一月-2009 |
摘要: | A symbol time synchronization method for OFDM systems is disclosed. The invention presents a joint maximum-likelihood (ML) synchronization method for symbol time offset (STO) for OFDM systems. The method is developed in frequency-domain under time-variant multipath channels. By analyzing the received frequency-domain data, a mathematical model for the joint effects of symbol time offset (STO), carrier frequency offset (CFO) and sampling clock frequency offset (SCFO) is derived. The results are used to formulate a log-likelihood function of two consecutive symbols. The joint estimation's method is robust, because it exhibits high performances in high mobility and time-variant multipath fading channels. |
官方說明文件#: | H04J011/00 H04L027/28 |
URI: | http://hdl.handle.net/11536/105547 |
專利國: | USA |
專利號碼: | 20090028042 |
顯示於類別: | 專利資料 |