Polar code decoding method and system of self-adaptive orderly moving pruning list
An adaptive, polar code technology, applied in the field of channel coding
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Embodiment 1
[0101] Such as figure 1 As shown, a polar code decoding method for an adaptive ordered mobile pruning list provided in this embodiment includes:
[0102] Step 101: receiving demodulated received sequences transmitted by several bit channels, the i-th bit channel transmitting the i-th bit in the received sequence;
[0103] Step 102: Initialize the adaptive search width L adp ;
[0104] Step 103: Judging whether the value L of the adaptive search width is smaller than the preset maximum adaptive search width L max , get the first judgment result;
[0105] Step 104: When the first judgment result is yes, decode the demodulated received sequence according to the current adaptive search width to obtain an estimated sequence of a bit sequence to be coded by a polar code; The bit sequence coded by the code is the sequence after the end of the initially transmitted information bit sequence is appended with a cyclic redundancy check bit;
[0106] Step 105: Judging whether the esti...
Embodiment 2
[0168] As another embodiment of the present invention, this embodiment provides an adaptive ordered mobile pruning list polar code decoding system, such as Figure 8 As shown, the system includes:
[0169] The receiving module 01 is configured to receive demodulated reception sequences transmitted by several bit channels, the i-th bit channel transmitting the i-th bit in the reception sequence;
[0170] Initialize the search width module 02 for initializing the adaptive search width;
[0171] A first judging module 03, configured to judge whether the adaptive search width is smaller than a preset maximum adaptive search width, and obtain a first judgment result;
[0172] The first decoding module 04 is used to execute the serial cancellation list decoding method with cyclic redundancy check according to the current adaptive search width when the first judgment result is yes, to obtain the bits to be coded by the polar code The estimated sequence of the sequence; the bit sequ...
Embodiment 3
[0190] As another embodiment of the present invention, a polar code-based communication method is provided, such as Figure 12 shown. see as Figure 11 The information bit transmission process shown in the figure explains the communication method in detail. The communication method specifically includes:
[0191] Step S1: Add a length K to the end of the information bit sequence U to be transmitted with a length K CRC The cyclic redundancy check bits of the polar code are obtained to obtain the bit sequence U1 to be encoded by the polar code; the element value of U1 is 0 or 1, and the sequence length is K+K CRC .
[0192] Step S2: Perform polar coding on the bit sequence U1 to be polar-coded to obtain a polar-coded bit sequence X, the element value of X is 0 or 1, and the length is N. The channel transmission sequence is obtained after modulation;
[0193] Step S3: Transmit the channel transmission sequence through the channel to obtain a receiving sequence to be demodul...
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