Receiving end IQ imbalance estimation and compensation method and device for SC-FDE system
A technology of SC-FDE, compensation method, applied in baseband system, transmission system, digital transmission system, etc., can solve problems such as limiting data rate and performance degradation
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[0051] The present invention will be further described below in conjunction with specific embodiments and accompanying drawings.
[0052] Such as figure 1 As shown, in the SC-FDE system, after the data is modulated at the transmitting end, the data is divided into the number of streams corresponding to the number of transmitting antennas through stream analysis. The data block is added with CP, and the data is sent out through the radio frequency end, and the data sent on the i-th antenna is s i (k,t).
[0053] Regardless of the IQ imbalance parameters at the transmitting end, after being interfered by the wireless channel and additive noise, the signal of the jth receiving antenna is
[0054]
[0055] Where k represents the kth data block, and t represents the tth data symbol. h ji Indicates the fading coefficient of the j-th receiving antenna to the i-th transmitting antenna, v j is the additive noise of the jth receiving antenna, Represents signal convolution.
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