【摘要】 文章分析了GSM公共控制信道的帧结构以及FCCH和SCH脉冲结构,介绍了一种捕获FCCH信道并进行频偏估计的算法。根据FCCH调制信号在相位上的特点,使用文章介绍的算法可以检测到FCCH的起始位置,而且能够根据该算法得到信号的频率偏移值,消去频偏对需要解调的SCH脉冲的影响。更多还原

【Abstract】 This paper puts forward a new proof of compliance arithmetic in capturing the frequency correction channels and estimating the frequency offset value.First it analyses the frame of the broadcast channels of GSM,then the frequency correction bursts and the synchronization bursts structure.Base on the characteristic of the modulated FB,the algorithm represent in this paper can detect the FCCH’s starting point and then gain the frequency offset of the signal,which can counteract the influence of SCH.更多还原