Method for generating turbo-code block intersection and HARQ packet

Abstract

The method comprises: the message packet is sent to a turbo code encoder with 1 / 3 code rate to generate a system bit-stream, a first even-odd check bit-stream and a second event-odd check bit-stream; wherein, the system bit-stream and the first even-odd check bit-stream uses the block interleavers which use 2M equaling lengths, based on bit-reversed order (BRO), and taken as column displacement function; bias delta of both block interleavers are zero; bias delta of the block interleaver of the second even-odd check bit-stream is not always zero. The invention also provides a cyclic buffer based turbo code HAQQ packet generation method.

Description

technical field [0001] The present invention relates to a digital communication system, in particular to a channel coding of a digital communication system. Background technique [0002] A digital communication system usually includes a source, a source coder, a channel coder, and a modulator at the transmitting end, and a demodulator, a channel decoder, a source decoder, and a sink at the receiving end, as shown in Figure 1. Show. The channel encoder is used to introduce redundant information to the information bits according to certain rules so that the channel decoder at the receiving end can correct the bit errors that occur when the information is transmitted on the channel to a certain extent. The invention improves the rate matching method of the channel coder. [0003] Channel encoders usually divide the information bits into coded blocks of a certain length for coding. Usually, the larger the coded block, the better the error correction performance, but the cost i...

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Problems solved by technology

However, the performance is poor when combined with systematic bit puncturing at high code rates

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