Cyclic shift network control method and system, storage medium and decoder

Abstract

The invention belongs to the technical field of wireless communication, and discloses a cyclic shift network control method and system, a storage medium and a decoder. the method comprises: performinggrouping processing on parallel input data according to a received shift control signal and sending a grouping result to a QSN module; generating a control signal according to the received shift control signal to control the QSN module and the Banyan module to work; carrying out first cyclic shift on parallel data sent by the input grouping module according to the received control signal, and sending a result to the Banyan module; and performing second cyclic shift on the parallel data sent by the QSN module according to the received control signal, and degrouping the parallel data while shifting to complete the whole cyclic shift operation. The cyclic shifter is compatible with a plurality of different parallel input ports, and can be flexibly split into corresponding independent shifters, so that the throughput is multiplied. The cyclic shifter is especially suitable for a 5G LDPC decoder compatible with multiple code rates, multiple modes and high throughput.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, and in particular relates to a cyclic shift network control method, system, storage medium and decoder. Background technique [0002] Currently, the closest existing technology: In 5G communication systems, it is of great significance to achieve high-throughput LDPC decoders. The LDPC parity check matrix in the 5G standard is different from the parity check matrix in the traditional standard. There are 51 cases of the promotion factor Z of the base matrix, and the matrix size varies widely. Usually, LDPC decoders are designed to meet the maximum Z decoding resources. When Z is small, only a small part of resources can be utilized, and the throughput is small, which cannot meet the high throughput requirements of the system. Therefore, it is necessary to improve the decoder in the case of small Z, and the key to improving the decoder is the improvement of the shift network. The cy...

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Problems solved by technology

At this time, the system only completes the cyclic shift of the Z channel input, and the resource reuse rate is low, which seriously affects the throughput of the entire system.

[0003] To sum up, the existing problems in the existing technology are: the existing technology does not determine the specific implementation scheme of the cyclic shift network; secondly, under the existing structure, when Z is relatively small, the resource utilization rate is not high, and it is affected by the shift module limitation, the throughput of the LDPC decoding system is low

[0004] Difficulty in solving the above technical problems: the implementation of 5G LDPC decoder requires the implementation of a cyclic shift network that supports all Z while occupying as little resources as possible; when Z is relatively small, the throughput can be improved by increasing resource multiplexing , the cyclic shift network of large Z is split into several independent cyclic shift networks suitable for small Z, which makes the realization of cyclic shift network difficult

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