A Method to Eliminate Effectof Phase Noisein OF DM Synchronization System

作     者：YE Jia jun CHEN Jian QIAN Ying TIAN Yang lin (School of Communication and Information Engineering, Shanghai University) 

作者机构：School of Communication and Information Engineering Shanghai University Shanghai China 

出 版 物：《Advances in Manufacturing》 (先进制造进展（英文版）)

年 卷 期：1999年第3卷第3期

页      面：214-217页

学科分类：080904[工学-电磁场与微波技术] 0810[工学-信息与通信工程] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 080402[工学-测试计量技术及仪器] 0804[工学-仪器科学与技术] 081001[工学-通信与信息系统] 

基　　金：国家高技术研究发展计划(863计划)(863-317-9602-04-1) 

主　　题：OFDM synchronization pilot 

摘      要：OFDM (the orthogonal frequency division multiplexing) and its variety DMT (the discrete multitone) as delegates of the multicarrier modulation technology have given a big impact on the conventional data communication applications. Based on the theoretic a analysis of the OFDM technology, the impact of phase noise that introduced by the bit and symbol timing mechanism is discussed. Then a pilot correction and the cyclic prefix protection method are put forwarded to deal with the problem. These methods have been used in our experimental OFDM cable modem system to cope with the impulse noise and narrow band interference in the HFC (hybrid fiber and coax) upstream channel.