METHOD FOR GENERATING PREAMBLE SYMBOL METHOD FOR RECEIVING PREAMBLE SYMBOL METHOD FOR GENERATING FREQUENCY DOMAIN SYMBOL AND APPARATUSES

摘要

The present invention provides a method of generating a kind of preamble symbol, a receiving method and a related frequency domain symbol generating method and a related apparatus, wherein the generated preamble symbol is a time domain symbol having a three-stage structure of the first type, or a second type. Time-domain symbols having a three-stage structure of, or time-domain symbols having a plurality of first-type three-stage structures arranged in front and rear, and / or free combinations of time-domain symbols having a plurality of second-type three-stage structures In addition, coherent detection can be realized by prefixing all or a certain length of the main body signal in the time domain, poor coherent detection performance is solved, and the problem of differential decoding under complex frequency selective fading channel is solved. A post prefix or a hyper prefix is generated based on all or part of one time domain main body signal, and the generated preamble sim It is provided with a good minutes several times the frequency offset estimation performance and timing synchronization capabilities.