摘要
提出了正交频分复用(OFDM)系统中一种新的帧同步算法.该算法采用一种具有中心对称结构的训练序列.借助于该训练序列,新算法在信噪比为10dB且误报概率为10-3的环境下具有10-3的训练序列漏检概率.在实现时间同步的同时,载波频偏也可以被纠正到0.5倍的子载波间隔范围内.
A new frame synchronization scheme in orthogonal frequency-division multiplexing (OFDM) system was proposed. Based on a central-symmetric training sequence, the miss detection probability of a training sequence in the proposed algorithm could be as small as 10-3 when signal noise rate is 10 dB and the false alarm probability is assumed to be 10-3. Carrier frequency offset could also be partially corrected within sub-carrier spacing of 0.5 as soon as frame synchronization is performed.
出处
《北京邮电大学学报》
EI
CAS
CSCD
北大核心
2005年第1期99-102,共4页
Journal of Beijing University of Posts and Telecommunications
基金
国家"863计划"项目(2001AA123016)
关键词
帧同步
频偏估计
正交频分复用
Digital communication systems
Fast Fourier transforms
Parameter estimation
Probability
Signal to noise ratio
Synchronization
