Application of low-density check code in wireless data communication
A wireless data communication and low-density check code technology, which is applied in the application of multi-bit parity error detection coding, data representation error detection/correction, digital transmission system, etc., can solve the complex coding of low density check code In order to achieve the effect of reliable data transmission, taking into account cost and performance
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[0047] The application of the low density check code of the present invention in wireless data communication includes the realization of LDPC encoder, the realization of LDPC decoder and the test of LDPC encoding and decoding. The test of LDPC encoding and decoding includes FPGA hardware error code test, video Interface testing and throughput testing,
[0048] Implementation of LDPC encoder:
[0049] In the encoder design, a quasi-regular LDPC code encoding algorithm structure based on Q matrix is adopted. The design of the quasi-regular LDPC encoder is as follows:
[0050] According to the formula (1)
[0051] It is known that the encoding process should first calculate
[0052]
[0053] Then accumulate the values of all the check digits. The above formula (1) can be calculated by the following method:
[0054] (1) First buffer a frame of data and store it in RAM according to certain rules;
[0055] (2) According to The position of the inne...
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