电子科技大学学报Issue(6)：818-823,6.DOI:10.3969/j.issn.1001-0548.2015.06.004
基于循环谱的OFDM混叠信号符号速率盲估计方法
Blind Estimation of Symbol Rate for Mixed OFDM Signals Based on Cyclic Spectrum
摘要
Abstract
In this paper, a symbol rate estimation algorithm based on cyclic spectrum is proposed for single- channel two co-channel mixed OFDM signals, which analyzes the character of cyclic spectrum of a single OFDM signal and the mixed OFDM signal respectively. The receiver can identify the mixed OFDM signal and simultaneously estimate the symbol rates of two co-channel OFDM signals from the difference of cyclic spectrum. The main feature of the proposed approach is needless to know any prior information of the mixed signals, which can be applied to intermediate frequency signal. Simulation results demonstrate good availability of the proposed method, and verify that it is not sensitive to the noise.关键词
循环谱/混叠信号/OFDM/单通道Key words
cyclic spectrum/mixed signal/OFDM/single-channel分类
信息技术与安全科学引用本文复制引用
张星,胡剑浩,朱中梁,袁苑..基于循环谱的OFDM混叠信号符号速率盲估计方法[J].电子科技大学学报,2015,(6):818-823,6.基金项目
国家863项目(2014AA01A707) （2014AA01A707）
