ProSync： A protective synchronization scheme for NC-OFDM based opportunistic spectrum sharing system  

作　　者：侯炜 Zhang Lin Shah Xiuming 

机构地区：[1]Complex Engineered Systems Laboratory,Department of Electronic Engineering,Tsinghua University,Beijing 100084,P.R.China

出　　处：《High Technology Letters》2012年第2期186-190,共5页高技术通讯（英文版）

摘　　要：A protective synchronization scheme （ProSync） for the non-contiguous orthogonal frequency-division multiplexing （NC-OFDM） system is proposed in this paper, aiming to minimize the impact of cross-band interference in opportunistic dynamic spectrum sharing networks. ProSync partly shrinks the preamble at the transmitter and exploits two multi-band filters at the receiver. By doing so, the potential interference suffered by NC-OFDM users, including both the cross-band interference and self interference, can be greatly reduced. Simulation results verify the effectiveness of ProSync, which is able to lower the carrier frequency offset （CFO） estimation error by up to 50%, compared with the traditional method.

关 键 词：non-contiguous orthogonal frequency-division multiplexing （NC-OFDM） SYNCHRONIZATION cross-band interference opportunistic spectrum sharing 

分 类 号：TN929.5[电子电信—通信与信息系统] TP334[电子电信—信息与通信工程]