Zte Corporation

Yuefeng Chen

Peng Zhou

Yijun Shi

The present invention discloses a method and a device for detecting a primary synchronization signal and generating a sequence in a LTE system, so as to solve the problem that the overhead for 3GPP LTE system to store a local primary synchronization sequence is too much during the initial cell search process. The method for detecting a primary synchronization signal includes: directly generating a local primary synchronization signal sequence with equal amplitude in the time domain as a matched filter; performing a front-end processing for a received signal; performing the matched filtering between the received signal after the front-end processing and the local primary synchronization signal sequence; judging the output amplitude of the signal sequence obtained after the matched filtering; and then obtaining a judgment result of the local primary synchronization signal sequence.

Method and device for detecting primary synchronization signal and generating sequence in long term evolution (LTE) system

The present invention discloses a method for joint secondary synchronization signal detection and frame timing synchronization, including: (1) generating local secondary synchronization sequences SSCand SSCaccording to a sector number of a cell group; (2) converting a received time domain signal to a frequency domain signal to obtain secondary synchronization signals Sand Sto be detected; (3) performing inner product operation to obtain P=P&#x2212;1+[S,SSC]+[S,SSC], and P=P&#x2212;1+[S,SSC]+[S,SSC]; (4) selecting the maximum value P of absolute values of correlation values in the Pand P, and judging whether the maximum value P is greater than a preset threshold Tmax, (5) if yes, taking the index of the maximum value P as an ID number of the cell group, or else, further carrying out step (2), and then further carrying out step (3).

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Shenzhen, China

Yuefeng Chen