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 for generating a preamble symbol, a method for receiving a preamble symbol, a related method for generating a frequency domain symbol, and apparatuses thereof. The methods are characterized by comprising: generating a prefix according to an extracted part of a time domain main signal; generating a super-prefix according to the whole or a part of the part of the time domain main signal; and generating time domain symbols according to at least one of a cyclic prefix, the time domain main signal, and the super-prefix, the preamble symbol comprising at least one of the time domain symbols. Therefore, when the prefix is generated according to 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 the super-prefix is generated according to the whole or a part of the extracted time domain main signal, the generated preamble symbol has good fractional frequency offset estimating performance and timing synchronization performance.