Preamble symbol generation and receiving method, and frequency-domain symbol generation method and device

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United States of America

PATENT NO 11201770
APP PUB NO 20190068420A1
SERIAL NO

16172662

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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Provided are a preamble symbol generation method and receiving method, and a relevant frequency-domain symbol generation method and a relevant device, characterized in that the method comprises: generating a cyclic prefix according to a partial time-domain main body signal truncated from a time-domain main body signal; generating a modulation signal based on a portion or the entirety of the partial time-domain main body signal; and generating time-domain symbols based on at least one of the cyclic prefix, the time-domain main body signal and the modulation signal, wherein the preamble symbol contains at least one of the time-domain symbols. Therefore, using the entirety or a portion of a certain length of a time-domain main body signal as a prefix, it is possible to implement coherent detection, which solves the issues of performance degradation with non-coherent detection and differential decoding failure under complex frequency selective fading channels; and generating a modulation signal as a postfix based on the entirety or a portion of the above truncated time-domain main body signal enables the generated preamble symbol to have sound fractional frequency offset estimation performance and timing synchronization performance.

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Patent Owner(s)

Patent OwnerAddress
SHANGHAI NATIONAL ENGINEERING RESEARCH CENTER OF DIGITAL TELEVISION CO LTD200125 ROOM 701 BLOCK B NO 1018 EAST SANLIQIAO ROAD PUDONG NEW AREA SHANGHAI SHANGHAI CITY SHANGHAI CITY 200125

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Guan, Yunfeng Shanghai, CN 24 53
He, Dazhi Shanghai, CN 21 49
Huang, Ge Shanghai, CN 21 72
Xing, Guanbin Shanghai, CN 45 1581
Xu, Hongliang Shanghai, CN 40 131
Zhang, Wenjun Shanghai, CN 111 675

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