Error control device and method using cycle code

An error control, cyclic code technology, applied in cyclic code, error correction/detection using linear code, error correction/detection using block code, etc., can solve problems such as increased system load and increased power consumption of mobile phones

Inactive Publication Date: 2002-01-30
MITSUBISHI ELECTRIC CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, the system load of the mobile device increases, and there i

Method used

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  • Error control device and method using cycle code
  • Error control device and method using cycle code
  • Error control device and method using cycle code

Examples

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Embodiment Construction

[0042] refer to figure 1 , the mobile machine 20 in the preferred embodiment of the present invention comprises the RF part 30 that wirelessly communicates with the base station, the demodulation part 32 that demodulates the signal from the base station that is received by the RF part 30, is connected to the demodulation part The channel decoding unit 34 that performs channel decoding processing on the output of 32, the error control decoding unit 36 ​​that performs error detection and error correction using an error correction code for the data after the channel decoding processing by using CRC checks, etc., and controls the overall operation of the mobile device 20. The CPU 38 that also includes basic operations of other circuits not shown in the figure, the error control coding unit 40 that performs error control coding processing such as CRC code addition on the data output from the CPU to be transmitted to the base station, and the error control coding unit 40 that output...

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Abstract

An error control device including a de-interleaver for de-interleaving data with a specfied number of bits which has been coded by a preset cyclic code and is scheduled to be interleaved in a present interleaving sequence, a first cyclic code inspection circuit for performing a cyclic code inspection on the data with the specified number of bits using an inspection method in conformity with a cyclic code coding system on receiving an output from the de-interleaver, and a second cyclic code inspection circuit for performing a cyclic code inspection on the data with the specified number of bits using an inspection method in conformity with a cyclic code coding system while canceling an interleaving effect by the de-interleaver concurrently with the cyclic code inspection by the first cyclic code inspection circuit and within a virtually identical time on receiving the output from the de-interleaver.

Description

(technical field) [0001] The present invention relates to an error control device and method using cyclic codes in communication, and more particularly, to an error control device and method using a communication method capable of switching between communication using data interleaving and communication not using data interleaving. (technical background) [0002] In recent years, communication devices using wireless communication, such as mobile phones, have become popular. Communication using wireless communication does not require telephone lines of a normal telephone system, etc., and is performed by installing a base station at an appropriate location. Therefore, it is most suitable for use in areas where the cost of laying telephone lines is considered too high. Not only that, but it is expected to become more popular in the future because there is no need to limit the location of communication. [0003] In such wireless communication, digital communication is mainly u...

Claims

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Application Information

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IPC IPC(8): H03M13/09H03M13/15H03M13/27H03M13/29H03M13/35H04L1/00
CPCH03M13/091H03M13/15H03M13/2703H03M13/29
Inventor 児玉幸夫京本丈司
Owner MITSUBISHI ELECTRIC CORP
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