Pseudo-analog channel coding method and device based on two-dimensional chaotic coding
A technology of analog channel and coding method, which is applied in the field of pseudo-analog channel coding based on two-dimensional chaotic coding, can solve the problem of less SoftCast, achieve the effect of improving utilization ability, improving the quality of reconstructed video, and reducing the amount of transmitted data
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[0054] Such as figure 1 As shown, a pseudo-analog channel coding method based on two-dimensional chaotic coding can significantly improve the bandwidth utilization ability in the case of low signal-to-noise ratio, and specifically includes the following steps:
[0055] S1. The sending end obtains the video pixel data to be transmitted, performs 3D-DCT operation on the video pixel data, obtains 3D-DCT coefficients and performs standardization processing;
[0056] S2. The low-frequency data part in the 3D-DCT coefficients is coded and protected by two-dimensional chaotic coding, and the high-frequency data part is transmitted according to the original SoftCast, and the data to be transmitted is power allocated and whitened before being sent to the receiving end;
[0057] S3. The receiving end performs LLSE decoding according to the received data, and then uses two-dimensional chaotic decoding to restore the coded low-frequency data part, performs inverse DCT operation according ...
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