Decoding method of cyclic code weight decoder

Abstract

The invention relates to a decoding method of a cyclic code weight decoder, which comprises the following steps: a error reducing type list is provided, and the symptom weight is calculated after a digital signal is received; if the weight is zero, no error exists; if the weight is smaller than or equal to the error resolution ability value, all errors are in redundant bit, so that the errors arecorrected according to left-shift the message length bit of the symptom; if the weight is more than the error resolution ability value, at least one error exists in the message bit; and if the a symptom type matched with the symptom exists in the error reducing type list or the weight of the symptom difference is smaller than the detected value, the error is corrected by the corresponding error type and the symptom difference of the left-shift message length bit, otherwise, after the digital signal circulates to the left by redundant block length bits, the weight of the new symptom is recalculated, and the previous steps are repeated to complete the quick decoding. The method has the advantage of quick decoding process; and no matter being used in a wired or wireless communication storagesystem for transmitting images and sound or the like, the method can easily acquire multimedia signals, such as images, sound and the like which are quickly decoded.

Description

Technical field [0001] The invention relates to a decoding method, in particular to a method of using query to reduce the error type table to decode the received digital signal and correct its error bit value. The decoding process is relatively fast and it is easy to obtain fast decoded video, sound and other multimedia The decoding method of the cyclic code weight decoder of the signal. Background technique [0002] In today's digital (digital) life, all audio, video and other signals (signals are signals, which are referred to as signals in this article) are all coded and decoded in a digital way, such as familiar digital TVs, Bluetooth headsets, DVDs and DVDs. WAP mobile communications, etc. [0003] At present, cyclic codes are used to encode audio and video signals, which are widely used in various fields. Its decoding methods are nothing more than algebraic decoding and table look-up methods. The algebraic decoding method uses the error position polynomial to correct the er...

AI Technical Summary

Problems solved by technology

The algebraic decoding method uses the error position polynomial to correct the error bit value, but the use of the multiple equations generated by the algebraic decoding method makes it difficult and time-consuming to calculate and solve in the finite body compared with the look-up table method

The traditional look-up table method needs to use a lot of memory space to store the error type table. When the error type table is quite large, the decoding process often takes a long time to look up

[0004] This shows that the above-mentioned existing decoding method obviously still has inconvenience and defects in method and use, and needs to be further improved urgently.

In order to solve the above-mentioned problems, the relevant manufacturers have tried their best to find a solution, but no suitable design has been developed for a long time, and the general decoding method has no suitable method to solve the above-mentioned problems. This is obviously a problem. Issues that relevant industry players are eager to solve

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