LDPC (Low Density Parity Check) encoder
An encoder and codeword technology, applied in the field of communication, can solve the problems such as the LDPC encoder implementation method is not given, so as to improve data processing speed and throughput, high encoding efficiency, and meet the requirements of high-speed digital information transmission Effect
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[0032] The LDPC encoder of the present invention supports two code lengths of 16200bit and 64800bit, 1 / 5, 4 / 9, 3 / 5, 2 / 3, 11 / 15, 7 / 9, 37 / 45, 1 / 2, 3 / 4, Eleven bit rates, 4 / 5 and 5 / 6; each I / 0 interface outputs a group of information bits with a bit width M=360bit; the shift step q can be obtained by checking the following table:
[0033]
[0034]
[0035] Such as figure 1 As shown, the LDPC encoder includes I / O interface, RAM address and shift factor generation module, RAM update calculation module, S matrix generation module, S matrix column and calculation module, check digit generation module, and code word generation module; The S matrix generating module includes a RAM for storing each element of the S matrix; the RAM is designed according to a bit width of 360 bit, and stores nk S matrix elements;
[0036] The I / O interface is used to output a group of information bits with a bit width of 360 each time;
[0037] The RAM address and shift factor generation module is used to, dur...
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