An uplink burst signal detection method with midamble sequence in TD-SCDMA system
For the TD-SCDMA uplink burst signal detection in low SNR, this paper proposed a method, which uses the highdegreed correlation of the same midamble sequence. As the local midamble sequence matched with the received midamble sequence, there would be a residual carrier or direct current signal. By analyzing its power spectrum, the certain user's uplink burst signal can be detected, and the carrier's frequency can be estimated accurately, too. Studies have shown that the approach can effectively overcome the offset of the residual frequency.