Component coder and coding method, double-output Turbo coder and coding method

A component encoding and encoder technology, applied in the component encoder and its encoding method, and the dual-input turbo encoder and its encoding field, can solve the problems of increasing the length of the encoding block, ignorance, and increasing the decoding complexity, etc. Reduce the amount of encoding calculation, reduce the encoding delay, and avoid the effect of the encoding process

CN100488059CInactive Publication Date: 2009-05-13HUAWEI TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2009-05-13
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention is concerned with the component encoder and the decoding method, the initial condition set of the register is zero state in the component encoder, the component encoder uses the outputting feedback bit from the self register to decode at the control of the controlling switch after finish the decode for each decoding block, in order to ensure the final condition and the initial condition of the register are consistent after decode. The method is concerned with the double inputting Turbo encoder and the encoding method using the above component encoder. The invention can avoid the two time encoding process in the existing encoder, reduce computation quantity of encode and the coding delay, and reduce the decoding computation quantity of the receiving terminal.
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Description

technical field

[0001] The invention relates to the channel coding technology in the communication system, in particular to a component coder and its coding method, a double-input Turbo coder and its coding method. Background technique

[0002] In order to improve the reliability of data transmission in the wireless communication environment and combat possible errors during data transmission, modern communication systems usually use forward error correction code (FEC) to encode the transmitted data at the transmitter. For example, Turbo code is a channel coding method with high error correction capability, and a coder using Turbo code for coding is called a Turbo coder. Turbo encoders are widely used in most data transmission systems, such as 3G, DVB-s2, WIMAX systems, etc.

[0003] Generally, a Turbo encoder is composed of two or more identical component encoders, and the information bits to be encoded input by each component encoder are exactly the same, but the input se...

Examples

Embodiment Construction

[0061] The core idea of ​​the present invention is: set the initial state of the register in the component encoder to zero state, after the component encoder completes the encoding of each coding block, use the feedback bit output by the component encoder's own register to make the component encoder The end state of the register is the zero state.

[0062] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and preferred embodiments.

[0063] image 3 is the principle diagram of the composition of the component encoder of the present invention, such as image 3 As shown, the component encoder of the present invention is composed of registers S1-S3, adders ADD1-ADD5 and control switch k, information bit 1 and information bit 2 are two input information bits, check bit 1 and check bit 2 are Check bits that are output after two...