Multi-carrier ratioless code transmission method based on generalized frequency division multiplexing technology

A generalized frequency division multiplexing and rate-free coding technology, which is applied in the field of multi-carrier rate-free coding transmission, can solve the problems of repeated coding and low decoding efficiency of higher priority data

Active Publication Date: 2013-08-14
保定市兆微软件科技有限公司
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Problems solved by technology

[0007] The purpose of the present invention is to provide a multi-carrier non-ratio-encoded transmission method based on generalized frequency division multiplexing technology, which solves the problem of low efficiency of repeated encoding and decoding of higher priority data existing in the prior art, and improves Unequal Error Protection Transmission Reliability

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  • Multi-carrier ratioless code transmission method based on generalized frequency division multiplexing technology
  • Multi-carrier ratioless code transmission method based on generalized frequency division multiplexing technology
  • Multi-carrier ratioless code transmission method based on generalized frequency division multiplexing technology

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Embodiment Construction

[0038] The present invention will be described in further detail below in combination with specific embodiments and accompanying drawings.

[0039] The multi-carrier non-rate-coded transmission method based on the generalized frequency division multiplexing technology of the present invention includes three parts: channel coding, multi-carrier transmission and channel decoding; The receiver performs channel decoding.

[0040] The present invention proposes a new degree distribution function and adopts it in channel coding. The new degree distribution function is called the function of Flexible Soliton Degree Distribution (FSDD). The parameter priority number L and the number of output symbols K can improve the flexibility of the degree distribution and make it suitable for any source code. The flexible soliton degree distribution FSDD can ensure enough low-degree values ​​at the beginning of encoding, avoid the phenomenon of ripple disappearing when BP decoding is used, and i...

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Abstract

A multi-carrier ratioless code transmission method based on a generalized frequency division multiplexing technology comprises channel coding, multi-carrier transmission and channel decoding, and specifically comprises the steps as follows: the channel decoding is performed at a receiving end through the multi-carrier transmission after the channel coding is performed at a sending end. The method solves the problems that data with a higher priority are coded repeatedly and the decoding efficiency is lower in the prior art, the reliability of the unequal error protection transmission is improved, the decoding efficiency can reach 0.9564, and the value of the performance parameter Rho can reach 0.90. According to the method, under the condition that the spectrum utilization rate is improved and the out-of-band radiation is reduced, data are subjected to unequal error protection, and particularly when the data with the priority are transmitted reliably, the protection for the data with the priority cannot be weakened, and the reliability of simulation data is improved.

Description

technical field [0001] The invention belongs to the field of wireless communication, and relates to a multi-carrier non-ratio-coded transmission method based on generalized frequency division multiplexing technology (Generalized Frequency Division Multiplexing, GFDM). Background technique [0002] During the data transmission process of the mobile multimedia broadcasting system, due to channel conditions and noise interference, the receiving performance of communication users is affected. Automatic Repeat Request (ARQ) and Forward Error Correction (FEC), as two major error control technologies, solve this problem by improving the reliability of data transmission. The automatic retransmission request ensures that the data is received correctly by retransmitting the original information. Forward error correction coding is to reduce transmission errors by performing error correction coding on transmitted data. [0003] In 1998, Michael Luby, John Byers and others proposed the...

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Application Information

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IPC IPC(8): H04L1/00H04L5/00
Inventor 张发存段喜盈
Owner 保定市兆微软件科技有限公司
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