Error detection and correction method, system and device based on two-way parity check
A parity check, error correction and detection technology, which is applied in the field of error correction and detection methods, systems and devices based on bidirectional parity check, can solve the problem that the row check code and the column check code cannot be checked for errors and cannot be checked and reduced. Data transmission efficiency, inability to directly perform error correction, etc.
Active Publication Date: 2014-05-14
兆讯恒达科技股份有限公司
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[0010] However, the existing two-way parity error correction method only adds the row check code and column check code, and cannot check whether there are errors in the row check code and column check code during the transmission process, that is, the assumption in the prior art All received check digits are correct and there are no bit errors
Moreover, in the prior art, for hybrid error correction, after the error location / range, only the retransmission of the corresponding information can be required, and the error correction cannot be performed directly, which reduces the efficiency of data transmission
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[0078]In order to make the purpose, technical solution and advantages of the present invention clearer, the error correction method, system and device based on bidirectional parity checking of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0079] The error correction and detection method based on the two-way parity check of the embodiment of the present invention below, such as figure 1 shown, including the following steps:
[0080] In step S100, the sending end divides the N-bit original data to be sent into k original data blocks of n×m bits, and fills with zeros to obtain the original data block matrix A, and the information code in the original data block is denoted as a ij .
[0081] Among them, N, n, m, k are integers, k×m×n≥N>(k-1)×m×n; ...
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The invention provides an error detection and correction method, system and device based on two-way parity check, wherein a check digit d is added when parity check codes are added to blocked data, the check digit d ensures that a row check digit is associated with a column check digit, and error codes are divided into data error codes, row check error codes, column check error codes and d error codes so as to check whether error codes exist during the transmission of the row check codes and the column check codes, and thus checking accuracy is improved. Moreover, received data is directly corrected instead of retransmission so that the efficiency of data transmission is enhanced.
Description
technical field [0001] The present invention relates to the technical field of digital communication and information coding verification, in particular, to an error correction and detection method, system and device based on bidirectional parity check. Background technique [0002] Just as the signal-to-noise ratio is the most critical quality indicator in analog communication, the most critical quality indicator in digital communication is the bit error rate, which refers to the ratio of the number of error codes to the total number of transmission codes. Since the channel cannot be completely ideal, there must be a certain bit error rate. Therefore, for the information receiving end, it is necessary to check the received data to determine whether there is an error. This requires the information sending end to send data. It is necessary to send a verification code or an error correction code corresponding to the data. [0003] In digital communication, there are generally ...
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IPC IPC(8): H04L1/00
Inventor 鲍妍李立孙春光王玮吴树兴范振伟符艳军曹培磊李凌浩杨磊刘洋刘成吕继华
Owner 兆讯恒达科技股份有限公司