symbol synchronization method
A symbol synchronization and symbol technology, applied in the direction of synchronization devices, wireless communications, electrical components, etc., can solve the problems of affecting communication efficiency and increasing the amount of computation
Active Publication Date: 2016-04-20
INST OF MICROELECTRONICS CHINESE ACAD OF SCI
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[0006] Compared with the traditional symbol synchronization method, the symbol synchronization achieved by the maximum average power method has reduced the complexity of the algorithm, but when there are more sampling points N per symbol, the calculation amount of the algorithm increases sharply, which seriously affects the communication efficiency. Therefore, it is a problem to be solved to realize symbol synchronization with less computation
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[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0030] The present invention provides an embodiment of a symbol synchronization method. In order to clearly show the implementation process of the method, firstly, there are L symbols in the digital signal, and there are N sampling points in each symbol, and the N sampling points correspond to At N sampling moments, divide L symbols into J power units, and determine the number of symbols M of each power unit according to the channel signal-to-noise ratio and th...
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The invention provides a symbol synchronization method. In the method, L symbols exist, N sampling points, namely N moments exist in each symbol, the L symbols are divided into J power units, and the sample moment number of a current power unit is smaller than that of a previous power unit. When each power unit uses a mean power formula, the sampling moment of the previous power unit is used, the mean power formula is used according to the sampling point corresponding to the sampling moment, the sampling moment number in each power unit is gradually reduced, therefore, therefore, the number of the sampling points corresponding to the sampling moments in each power unit is reduced in a multiplied mode, so that the computed sampling point number is reduced in a multiplied mode when the maximum mean power method is used, compared with the prior art that for the sampling moments in each symbol, the mean power formula is used for computing the maximum average, operation amount can be greatly lowered with the method, and accordingly the purpose that small operation amount is used for achieving symbol synchronization can be achieved through the method.
Description
technical field [0001] The invention relates to the field of wireless communication systems, in particular to a symbol synchronization method. Background technique [0002] In the field of wireless communication, in order to improve the quality of data signal reception, the receiver first needs to perform symbol synchronization processing on the received data signal, and then perform subsequent signal processing after symbol synchronization, so as to improve the quality of the communication link. [0003] An existing symbol synchronization method is the maximum average power method. This method first performs analog-to-digital conversion on the received data signal to obtain a digital signal. The digital signal is composed of various symbols, and each symbol has multiple sampling points. In order to clearly illustrate the method, assuming that there are L symbols in the digital signal, and there are N sampling points in each symbol, and the N sampling points correspond to N ...
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IPC IPC(8): H04W56/00
Inventor 迟宇陈岚吕超
Owner INST OF MICROELECTRONICS CHINESE ACAD OF SCI