Parallel folding-RS cascade coding method and realizing device thereof

Abstract

The invention discloses a parallel folding-RS cascade coding method and a realizing device thereof. The method comprises the following steps of: S1, blocking the received Nin path input data into folding coding frame as the input of the parallel folding coding; S2, performing parallel winding coding on the folding coding frame output in the step S1 and outputting valid data in the folding coding frame; S3, combining multi-path output of the parallel folding coding into one path of data and outputting the data in parallel by taking a field as a unit, wherein the bit width of the field is NRS bit; S4, searching the field on the initial position of a frame synchronous identifier word in the data output in the step S3 as well as the position in the field, outputting RS signal frame body data and identifying the initial position of the frame body; S5, descrambling the data output in the step S4 in parallel; and S6, performing symbol-solving interlacing and RS coding on the data descrambledin the step S5. The invention improves the coding throughput rate and effective net load rate of the folding-RS cascade coder and can satisfy the coding requirement in the high-rate information transmission application occasions for satellite communication, and the like.

Description

technical field [0001] The invention relates to the technical field of digital information transmission, in particular to a parallel convolution-RS concatenated code decoding method and an implementation device thereof. Background technique [0002] Convolution-RS concatenated code is a channel coding method often used in various communication systems such as digital TV, satellite communication, and mobile communication. Since it was proposed, the researches on theory, performance and hardware implementation have been quite mature, and it has been widely used in various communication occasions because of its better coding gain and lower implementation complexity. However, with the development of science and technology, the transmission rate required by various communication systems is getting higher and higher. For example, the transmission rate of satellite communication will reach more than 1Gbit / s. higher requirement. [0003] The block diagram of the traditional convol...

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Problems solved by technology

[0005] The traditional convolution-RS concatenated code decoder mentioned above is proposed for single-channel serial data. The input and output of the convolution decoding, frame synchronization and descrambling units are all serial data. Therefore, due to the device Due to the limitation of factors such as cost and cost, it is difficult for this kind of convolution-RS concatenated code decoder to meet the processing requirements of high-speed and large amount of data.

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