Mediatek Corporation

Wei-nan Sun

Chun-Ming Kuo

I-Ping Chang

Hung-Shiun Fu

Ho-chi Hwang

YingYing Chen

A dummy burst detection method. The method begins with generating a dummy burst nominal power &#x3b7;of a received burst and a normal burst nominal power &#x3b7;of the received burst, wherein the dummy burst nominal power &#x3b7;is generated based on the hypotheses that the received burst is a dummy burst, and the normal burst nominal power &#x3b7;is formed based on the hypotheses that the received burst is a normal burst. A likelihood of the received burst is determined according to the dummy burst nominal power &#x3b7;, the normal burst nominal power &#x3b7;, and the noise power of the received burst.

Dummy burst detecting method and apparatus

A GSM communication system uses a channel estimator to generate a channel impulse response estimate from received bursts. Preferred embodiments of such a system include a first correlation unit that uses N midamble bits to evaluate received signals and produce first correlation outputs over a wide search range. A positioning unit identifies candidate first correlation outputs having the best estimation quality within a sliding observation window and uses those outputs as the initial channel impulse response (CIR) estimate. The initial CIR is provided to a second correlation unit that block correlates M (greater than N) midamble bits to the received signal samples. The second correlation unit performs correlation stage by stage with compensation based on the initial and updated CIR to improve the channel estimation.

Growing community of inventors

Hsinchu Hsien, Taiwan

Wei-nan Sun