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Improved channel coding method and device

A channel coding and equipment technology, applied in coding, coding elements, error detection coding using multi-bit parity bits, etc., and can solve problems such as high decoding complexity

Inactive Publication Date: 2005-09-14
SAMSUNG ELECTRONICS CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0011] Despite the advantage of better BER and PER performance than regular RA codes, irregular RA codes have certain disadvantages, namely, the structure and operation of irregular RA coders will vary significantly depending on the coding rate and information frame length, and due to the irregular repetition factor f used in the irregular repeater 202 i , the total number of groups J and because the value "a" varies with the encoding rate and the length of the information frame will lead to a high decoding complexity

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Embodiment Construction

[0031] Preferred embodiments of the present invention will be described below with reference to the accompanying drawings. In the following description, well-known functions or constructions are not described in unnecessary detail since they would obscure the invention in unnecessary detail.

[0032] As described earlier, conventional RA coding methods are not usable for high coding rates. Traditional irregular RA codes, which provide improved BER and FER performance, but increase the complexity of encoding and decoding, and require a large number of irregular RA encoders in operation and structure according to the encoding rate and information bit frame length The change. This is why traditional irregular RA codes cannot support different coding rates and different information bit frame lengths. On the contrary, the present invention provides an optimal RA encoding method that efficiently supports different encoding rates and different information bit frame lengths through ...

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Abstract

A channel coding method and device using an RA method and puncturing are provided. In the channel coding method, the input information bits are repeated according to a repetition factor, interleaved, and accumulated. The accumulated bit stream and the information bits are converted to a serial bit stream and punctured according to a puncturing pattern. Thus, a codeword with a required coding rate is generated.

Description

technical field [0001] The present invention mainly relates to a mobile communication system, in particular, to a channel coding apparatus and method for minimizing coding complexity and providing improved BER (Bit Error Rate) through RA (Repeat and Accumulate) and puncture and FER (Frame Error Rate) performance. Background technique [0002] As discussions on 4th generation (4G) mobile communication services have recently increased, demands for standardization thereof have become higher. It is expected that RA codes with better error correction performance using turbo codes will be used in channel coding methods for 4G mobile communication systems. Therefore, the channel coding scheme is proposed to efficiently support the RA code gain and various coding rates. [0003] figure 1 is a block diagram of a bad RA encoder with a 1 / q coding rate. refer to figure 1 , N information bits appear q times in repeater 102, and qN bits are interleaved in interleaver 104 of size qN. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03M13/27H03M13/00H03M13/03H03M13/11H03M13/29H04L1/00
CPCH03M13/635H03M13/29H03M13/1194H03M13/27
Inventor 田敬薰金映秀吴旺禄
Owner SAMSUNG ELECTRONICS CO LTD