OFDM system fast-change channel estimation method based on double weighing
A channel estimation and channel response technology, applied in baseband system components, multi-frequency code systems, etc., can solve the problems of channel characteristics difference, estimation performance degradation, limited estimation performance, etc., and achieve slow convergence speed and anti-multipath interference ability. Strong, high spectrum utilization effect
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[0059] 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.
[0060] see figure 1 , the embodiment of the present invention provides a method for fast-changing channel estimation in an OFDM system based on double weighting, comprising the following steps:
[0061] Step 101: extracting pilot signals from received data of the system, and estimating channel responses of pilot positions.
[0062] Step 102: For each pilot subcarrier, obtain the predicted value of the channel response of its data position through forward pred...
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