Detection of TD-SCDMA uplink burst signal based on sliding match and power spectrum analysis
基于滑动匹配功率谱分析的TD-SCDMA上行突发信号检测

For the problem of the TD-SCDMA uplink burst signal detection in low SNR, this paper proposed one algorithm, which used high-degreed correlation of the same midamble code. As the local midamble code match with the midamble code to receive the uplink burst signal sequences, there would appear residual carrier or DC signal residual carrier frequency is zero components. As to strike the power spectrum of the residual carrier or the DC, a sharp peak would appear in the frequency position of power spectrum. By detecting the peak amplitude and the position, whether there was the certain code sequence mi-damble and the carrier modulation frequency could be accurately estimated. Studies have shown that: this method can effectively overcome the effects of residual frequency offset. The detection algorithm has a good effect, and can overcome the effects of residual frequency offset.