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Decoding processing method and device

A processing method and decoding technology, applied in the direction of using linear codes for error correction/detection, using block codes for error correction/detection, digital transmission systems, etc., can solve problems such as superior delay, poor performance, and use restrictions. Achieve the effect of improving decoding performance and reducing time complexity

Active Publication Date: 2020-12-29
ZTE CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The embodiment of the present invention provides a decoding processing method and device to at least solve the problem that polar codes in the related art have superior performance through SC decoding but cannot perform parallel decoding, resulting in limited use in low-latency communication scenarios. Or there is a problem of superior delay but poor performance through BP decoding

Method used

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  • Decoding processing method and device

Examples

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Embodiment 1

[0030] The method embodiment provided in Embodiment 1 of the present application may be executed in a mobile terminal, a computer terminal, or a similar computing device. Taking running on a mobile terminal as an example, figure 1 It is a hardware structural block diagram of a mobile terminal of a decoding processing method according to an embodiment of the present invention, as figure 1 As shown, the mobile terminal 10 may include one or more ( figure 1 Only one is shown in the figure) a processor 102 (the processor 102 may include but not limited to a processing device such as a microprocessor MCU or a programmable logic device FPGA) and a memory 104 for storing data. Optionally, the above-mentioned mobile terminal also A transmission device 106 for communication functions as well as input and output devices 108 may be included. Those of ordinary skill in the art can understand that, figure 1 The shown structure is only for illustration, and does not limit the structure o...

example 1

[0110] Assume that the number of information bits K=512, the mother code length N=1024, n=10, the freezing bits at the sending end are set to all zeros, and the modulation method is BPSK. The specific steps are as follows:

[0111] Step 1. Parameter determination: when the first BP decoding node in the decoding sequence contains information bits, the greater the serial decoding order S, the better the performance of the decoding Block Error Rate (BLER). Good, but at the same time it will increase the decoding delay. Therefore, when the block error rate BLER performance priority is greater than the decoding delay priority, in order to achieve the best decoding performance, set S to the largest S under the condition that the deepest decoding node contains information bits. If the decoding delay priority is greater than the BLER performance priority, select S=1. Other scenarios S can be set according to the performance requirements of specific services (such as delay requirement...

example 2

[0162] Assume that the number of information bits K=256, the mother code length N=1024, n=10, the freezing bits at the sending end are set to all zeros, and the modulation method (Binary Phase Shift Keying, referred to as BPSK), the specific steps are as follows:

[0163] Step 1. Strategy requirements: Consider the decoding block error rate and decoding delay in the compromise between information bits and transmission bits, then according to the bitmap V, it can be known that information bits are not included in the first 128 bits, and information bits are not included in the first 256 bits. including information bits. From N=1024, it can be known that the optional decoding node sequence Q{q 1 ,q 2 ,...,q 11}, according to the decoding delay and block error rate requirements, according to the following method to select the decoding node sequence in a variety of selection methods. In the case of parallel implementation of the BP decoding algorithm with prior information, the...

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Abstract

The invention provides a decoding processing method and device. The method comprises the steps of selecting a decoding node sequence A from a mother sequence Q according to the decoding performance; determining bit information and a bitmap of each decoding node in the decoding node sequence A; determining decoding result bit information of each decoding node according to the prior information, thebit information and the bitmap of each decoding node; and judging according to the decoding result bit information of each decoding node to obtain a decoding result of each decoding node, and outputting the decoding result. The problem that the polarization code is limited in use in a low-delay communication scene due to the fact that the polarization code is excellent in performance but cannot be decoded in parallel through SC decoding in the prior art can be solved, or the problem that BP decoding has excellent time delay and poor performance is solved, the decoding performance is improvedcompared with BP decoding, and the time complexity is reduced compared with SC decoding.

Description

technical field [0001] The present invention relates to the field of mobile communication, in particular to a decoding processing method and device. Background technique [0002] Polar codes are a channel coding technique that is theoretically proven to achieve Shannon capacity. Taking the binary memoryless channel as an example, channel polarization introduces correlation through channel merging, and then undergoes channel splitting to obtain a new set of binary polarized channels. When there are enough channels participating in the polarization, the polarization phenomenon can be observed: the capacity of some channels tends to 1, while the capacity of other parts tends to 0. Information bits can be placed on channels with high channel capacity for transmission, while known bits (frozen bits) can be placed on channels with low channel capacity, thereby improving transmission reliability. [0003] Currently, the decoding methods of polar codes include serial cancellation ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/00H03M13/13
CPCH04L1/0057H04L1/0052H03M13/13
Inventor 郜杰魏浩李杰
Owner ZTE CORP
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