A method for enhanced self-adapted data retransfer

Abstract

The invention discloses a method for retransmitting enhanced self-adaptive data. The method adopting a self-adaptation technique is: when a communication channel is in good condition, to code data by means of a high bit rate coder which has a high transmission rate and few redundant error-correcting codes and to complete initial transmission of the data, or to use a method of information bit puncturing hybrid retransmission of data for improving the utilization rate of hardware and the system throughput and saving energy; and when the communication channel is in poor condition, to code data by means of a low bit rate coder which has a high transmission rate and more redundant error-correcting codes and to complete initial transmission of the data, or to use a method of parity bit puncturing hybrid retransmission of data for guaranteeing the reliability of communication transmission. The method of the invention has the combined advantages of technologies of information bit puncturing hybrid retransmission and parity bit puncturing hybrid retransmission, and thus can not only improve the utilization rate of the hardware, reduce the time delay for transmission processing, improve thesystem throughput and saves energy, but also ensure good error-correcting transmission performance in poor communication channel condition.

Description

technical field [0001] The present invention relates to a method for realizing automatic error correction of data transmission in a digital communication system, to be precise, relates to an enhanced adaptive data retransmission method, which belongs to adaptive communication technology and data hybrid automatic retransmission technology field. Background technique [0002] The data transmission environment in mobile communication is usually affected by various factors such as channel fading, inter-symbol interference and time-varying noise, which makes the communication process have a lot of uncertainty. The introduction of channel coding (also known as error correction code) is to use error correction codes at the sending end and receiving end to encode and decode data respectively, and its purpose is to add error correction protection to the transmitted data to improve and ensure the transmission of digital communication systems quality. From the perspective of the cons...

AI Technical Summary

Problems solved by technology

This parity bit punching mixed retransmission scheme can guarantee a predetermined better transmission performance in the worst channel, but the disadvantage is that the hardware usage efficiency is poor

[0010] Compared with the previous two technical solutions, the advantage of the extended parity check matrix method is that the obtained low bit rate code has better error correction performance, but its disadvantage is that it requires more than one decoder, and the hardware cost is high.

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