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Communication system, communication device, error correction method

A communication system and error correction technology, applied in the field of communication systems

Inactive Publication Date: 2011-02-16
KYOCERA CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, in a communication system using modulation processing for differential coding, in order to perform 1-bit error correction generated in the communication path, a 2-bit error correction code that can be corrected is required. From the perspective of error correction efficiency look at the problem

Method used

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  • Communication system, communication device, error correction method
  • Communication system, communication device, error correction method
  • Communication system, communication device, error correction method

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Experimental program
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Effect test

Embodiment approach 1

[0054] Hereinafter, configurations and functions of the mobile station apparatus 30 and the base station apparatus 20 in Embodiment 1 of the present invention will be described.

[0055] First, the base station apparatus 20 will be described. image 3 is a functional block diagram showing the functional blocks of the base station apparatus 20. As shown in the figure, the base station apparatus 20 includes a switch unit 100 a , a differential encoding unit 102 a , a Hamming encoding unit 103 , a modulation unit 104 a , a switch unit 105 , a radio transmission unit 106 , and a phase control unit 107 .

[0056] Figure 4 It is a diagram showing the structure of communication data transmitted and received in this embodiment. Communication data is divided into one or more communication frames and sent. As shown in the figure, the communication frame includes a region S1 where Hamming coding is not implemented, a region S2 where Hamming coding is implemented, and an adaptive modu...

Embodiment approach 2

[0090] The configuration and functions of the mobile station device 30 and the base station device 20 in Embodiment 2 will be described.

[0091] Embodiment 2 of the present invention is characterized by a mobile station device 30 . That is, in the mobile station device 30 , compared with the synchronous detection performed in the first embodiment, the delay detection is performed on the communication data S1 and the communication data S2 in the second embodiment.

[0092] In differential detection, the mobile station device 30 acquires each bit of the processed communication data by performing coherent detection on each symbol of the radio signal, and performs differential decoding thereof. Therefore, data output as a result of differential detection is data that has been subjected to synchronous detection and differential decoding in the order of coherent detection and differential decoding as a result (hereinafter referred to as communication data after differential detecti...

Embodiment approach 3

[0110] The configurations and functions of the mobile station apparatus 30 and the base station apparatus 20 in Embodiment 3 of the present invention will be described.

[0111] Embodiment 3 of the present invention is characterized in base station apparatus 20 , and the same apparatus as in Embodiment 1 or Embodiment 2 can be used in mobile station apparatus 30 .

[0112] In Embodiment 1 or Embodiment 2, differential coding and Hamming coding of communication data S2 are performed in the order of differential coding and Hamming coding in base station apparatus 20 . On the other hand, in this embodiment, as a result, other processed communication data that can obtain processed communication data obtained by performing differential encoding and Hamming encoding on the communication data S2 in the order of differential encoding and Hamming encoding is adopted. generate method.

[0113] Specifically, quasi-Hamming encoding processing is performed instead of Hamming encoding proc...

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Abstract

In a communication system employing a modulation processing for performing differential encoding, a bit error of communication data generated in a communication route is corrected by an error correction code capable of correcting the same number of error bits as the number of error bits. A base station device generates processed communication data as a processed portion subjected to the differential encoding and error correction encoding in this order by a predetermined generation process for the portion to be processed which is at least a part of the communication data as the communication object. The base station device transmits the generated processed communication data. A mobile station device receives the processed communication data which has been transmitted, acquires error-corrected decoded data obtained by error-correcting and decoding the processed portion among the processed communication data received, and subjects the error-corrected decoded data to the differential decoding.

Description

technical field [0001] The present invention relates to a communication system, a communication device, an error correction method, and a communication control program, and relates to, for example, a technique for correcting an error generated in a communication path. Background technique [0002] In an existing communication system, error correction of a communication path using an error correction code is generally performed. Specifically, the transmission device performs modulation processing on the communication data after error correction encoding and transmits it, and the reception device performs demodulation processing on the received communication data, and then performs error correction decoding. Through the above method, in the existing communication system, error correction based on the error correction code can be realized. [0003] Patent Document 1 describes an example of the above-mentioned error correction. [0004] Patent Document 1: Japanese Patent Laid-...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/00H04L27/00H04L27/227
CPCH04L1/0045H04L1/0041
Inventor 锦户正光中村泰浩田中信行藤内裕也
Owner KYOCERA CORP