A kind of channel smoothing method and system of wireless OFDM system
A channel smoothing and channel technology, applied in the field of communication, can solve the problems of inaccurate smoothing results, insufficient consideration of carrier correlation and channel characteristics, etc., and achieve the effect of improving receiving performance and accuracy
Active Publication Date: 2022-08-02
上海矽昌微电子有限公司
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Although this method can improve the signal-to-noise ratio to a certain extent, it does not fully consider the correlation between carriers and channel characteristics, and the final smoothing result is inaccurate
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[0058] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.
[0059] It should be noted that the embodiments of the present invention and the features of the embodiments may be combined with each other under the condition of no conflict.
[0060] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but it is not intended to limit the present invention.
[0061] The present invention provides a channel smoothing method and system for a...
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The invention relates to the field of communications, and in particular to a channel smoothing method and system method for a wireless OFDM system, comprising: step S1, constructing a solution formula for a channel smoothing coefficient associated with a channel parameter in advance according to a channel ideal value of a channel and a channel estimation result Step S2, according to the channel parameter processing and solving formula of the preset multiple channels, obtain the channel smoothing coefficient corresponding to the multiple channels; Step S3, obtain the current channel parameters of the current channel and the current channel estimation result, according to the current channel parameters from The corresponding channel smoothing coefficients are obtained from all the channel smoothing coefficients and used as the current channel smoothing coefficients, and the channel smoothing results of the current channel are obtained according to the current channel smoothing coefficients and the current channel estimation results. The technical solutions of the present invention have the beneficial effects of providing a channel smoothing method and system for a wireless OFDM communication system, which can improve the accuracy of the channel estimation result and improve the receiving performance of the receiver.
Description
technical field [0001] The present invention relates to the field of communications, and in particular, to a channel smoothing method and system for a wireless OFDM system. Background technique [0002] With the development of wireless communication technologies such as LTE and WIFI, higher and higher requirements are placed on the demodulation capability of the receiver. Channel estimation is a crucial link in the received signal processing flow and requires high accuracy. Therefore, the estimation result needs to be smoothed in the receiver processing flow, which can reduce the channel noise, improve the signal-to-noise ratio, and finally improve the performance of the receiver. [0003] The existing channel smoothing methods mainly obtain new channel estimation results by adding weights to the channel estimation results of adjacent subcarrier positions, and then performing averaging and normalization processing. Although this method can improve the signal-to-noise ratio...
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IPC IPC(8): H04L25/03H04L25/02
CPCH04L25/03821H04L25/0256
Inventor 朱可徐进张炜王胜
Owner 上海矽昌微电子有限公司