A Time-Frequency Interleaving Preprocessing Combined Method Against Narrowband Interference and Impulse Noise in OFDM System
A technology of narrow-band interference and impulse noise, applied in the joint field of time-frequency interleaving and preprocessing, which can solve problems such as guarantee elimination, poor flexibility, and little improvement in interleaving performance, and achieve good resistance performance and improve transmission performance.
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[0040] The present invention will be described in detail below according to the accompanying drawings and preferred embodiments, and the purpose and effect of the present invention will become clearer. The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0041] Such as figure 1 As shown, the OFDM system flow chart expression is as follows:
[0042] the y i = h i e x i +e i +z i +w i
[0043] in:
[0044] h i =[h i,0 h i,1 ... h i,N-1 ] T Indicates the multipath channel impulse response with a maximum multipath delay of L;
[0045] e is the convolution operation;
[0046] e i =[e i,0 e i,1 ... e i,N-1 ] T is the narrowband interference signal corresponding to the ith received time-domain OFDM symbol;
[0047] z i =[z i,0 z i,1...
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