METHOD AND APPARATUS FOR RECEIVING PREAMBLE SYMBOL

摘要

The present invention provides a method for receiving a preamble symbol and a related apparatus. The present invention is characterized in that the received preamble symbol comprises a time domain symbol generated by a sending end according to a predetermined generation rule and by using a single three-segment structure; and the single three-segment structure comprises a time domain main signal, a prefix generated based on the whole or a part of the time domain main signal, and a suffix or super-prefix generated based on the whole or a part of the time domain main signal. Therefore, when the prefix is generated based on the whole or a part of a certain length of the time domain main signal, coherent detection can be implemented, which solves the problems of degradation of non-coherent detection performance and differential decoding failure under a complex frequency selective fading channel, and when a modulation signal of the suffix or super-prefix is generated based on the extracted whole or part of the time domain main signal, the generated preamble symbol has good fractional frequency offset estimating performance and timing synchronization performance.