Low density odd-even check coding control method, system and terminal device

Abstract

This low density odd-even check coding control method, system and terminal device are used to solve how to raise the system throughput in the existed self-adapting control mode based on the low density odd-even check coding. This technique scheme considers fully that the decoding of LDPC is an iterative decoding, where there is a max iterative number. When the channel situation is good, only a few iterative number is enough to do decoding well. Thus some properly punching on the good channel can still keep the correct decoding with the iterative number less than the max value. Thus system throughput and frequency spectrum utilization are raised. This scheme considers that the LDPC feature of different code ratio is much different. Under the situation of punching and wrong decoding, the decoding correctness can be raised via retransmission of a few punched out data.

Description

Technical field

[0001] The present invention relates to data communication technology, in particular to a low-density parity check coding control method, system and terminal equipment. Background technique

[0002] With the rapid development of mobile communication technology nowadays, the requirements for system spectrum utilization are getting higher and higher, which requires the system to achieve the highest possible spectrum efficiency within limited frequency resources. AMC (Adaptive Modulation Coding, adaptive coding and modulation) technology can adjust the coding rate and modulation method of the system according to the fading channel conditions, so that high-order modulation and high-rate coding methods can be used under good channel conditions to achieve high In the case of poor channel conditions, low-order modulation and low-rate coding are used to ensure communication quality. The adaptability of this technology greatly improves the capacity and spectrum utilization...

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