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Method and device for interweaving turbo codes in parallel

A technology of interleaving data and encoding, applied in the field of communication, can solve the problems of low efficiency of turbo encoding and decoding

Active Publication Date: 2011-04-27
SANECHIPS TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The present invention aims to provide a turbo code parallel interleaving method and device to solve the problem of low efficiency of the existing turbo codec

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  • Method and device for interweaving turbo codes in parallel

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Embodiment Construction

[0021] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0022] figure 1 A flowchart of a turbo code parallel interleaving method according to an embodiment of the present invention is shown, including the following steps:

[0023] Step S10, using a recursive method to calculate the interleaving address Π(i) of the first horizontal path, wherein, i=0, 1, 2, ..., K / P-1, K is the length of the data to be interleaved, and P is the parallel path number;

[0024] Step S20, calculating the corresponding interleaving addresses Π(i+Δ) of other parallel paths from the interleaving address Π(i) of the first path, where Δ is the address offset of other paths relative to the first path;

[0025] Step S30, according to the parallel interleaving addresses ∏(i) and ∏(i+Δ) calculated above, read the data to be interleaved from the data storage unit to be processed, and input it into the turbo parallel e...

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Abstract

The invention provides a method and a device interweaving turbo codes in parallel. The method comprises the following steps of: calculating the interweaving address pai (i) of a first lateral line by using the recursive method, wherein i=0, 1, 2, ......, K / P-1, K is the length of data to be interweaved, and P is the quantity of parallel lines; calculating the corresponding interweaving address pai (i+delta) of other parallel lines by using the interweaving address pai (i) of the first lateral line, wherein delta is the address offset of other lines in relative to the first line; and reading the data to be interweaved from a storage unit of data to be processed according to the calculated interweaving addresses pai (i) and pai (i+delta) of the parallel lines, inputting into a turbo parallel coding / decoding unit, and executing turbo parallel coding or decoding. The invention can greatly reduce the calculation complexity of the interweaving address, lightens calculated amount and increases the turbo coding and decoding efficiency.

Description

technical field [0001] The present invention relates to the communication field, in particular to a turbo code parallel interleaving method and device. Background technique [0002] Since the turbo code was invented in the 1990s, it has been widely used in various communication systems due to its excellent performance. The interleaver plays a very important role in the turbo code. It disrupts the original data sequence and weakens the correlation of the data sequence before and after interleaving, thereby greatly reducing the impact of data burst errors and further improving the anti-interference performance. [0003] Aiming at different communication standards, related technologies have detailed explanations on the implementation of the interleaver: based on the IMT 2000 3GPP TS25.212 standard, a turbo interleaving scheme is proposed; for WCDMA systems, a turbo interleaving / deinterleaving scheme is proposed; for CDMA2000 LCS turbo interleaving proposes a corresponding solu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03M13/27H03M13/29
Inventor 王引弟
Owner SANECHIPS TECH CO LTD
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