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PCM signal coding system and method

A signal encoding and encoding technology, applied in the field of signal encoding, can solve the problems of increasing the output power of the transmitter, increasing the difficulty of transmitting equipment, increasing the interference of the communication system, etc., so as to improve the error correction ability, solve the problem of data rate mismatch, The effect of improving reliability

Inactive Publication Date: 2019-09-06
HUBEI SANJIANG SPACE XIANFENG ELECTRONICS&INFORMATION CO LTD
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

At present, in the PCM signal communication system, the signal-to-noise ratio must reach a certain threshold when receiving and processing PCM data, so as to improve the accuracy of the PCM signal. For the PCM signal communication system, it means that the transmitter needs to be increased. Output power increases the difficulty of transmitting equipment and increases interference with other communication systems

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  • PCM signal coding system and method
  • PCM signal coding system and method

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Embodiment Construction

[0028] In order to make the objectives, technical solutions and advantages of the present invention clearer, the following further describes the present invention in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.

[0029] In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other. The present invention will be further described in detail below in conjunction with specific embodiments.

[0030] figure 1 It is a schematic diagram of a PCM signal encoding system according to an embodiment of the present invention. Such as figure 1 As shown, the system includes a serial-to-parallel conversion module, a PCM detection module, an encoding module, a state management module, an out...

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Abstract

The invention discloses a PCM signal coding system and method. The PCM signal coding method comprises the following steps: detecting an input external PCM signal and outputting a first control instruction; carrying out serial-parallel conversion on the input external PCM signal; starting coding according to the received first control instruction, the coding process specifically comprising the steps of receiving and caching serial-parallel conversion data with preset capacity, adding a preset identification bit to form an initial matrix, and performing row coding and column coding on the initial matrix according to a preset coding mode to obtain a coding matrix; and caching the coding matrix data in an output FIFO, outputting corresponding data according to the second control instruction, performing parallel-serial conversion, and then outputting the data, thereby improving the reliability of the output coding signal.

Description

Technical field [0001] The invention belongs to the field of signal coding, and specifically relates to a PCM signal coding system and method. Background technique [0002] PCM pulse code modulation is the abbreviation of Pulse Code Modulation. Pulse code modulation is one of the coding methods of digital communication. The main process is to sample analog signals such as voice and image at regular intervals to make them discretize. At the same time, the sampled value is rounded up and quantized according to the stratified unit, and the sampled value is represented by a set of binary codes to represent the amplitude of the sampled pulse value. [0003] Due to the interference of physical media and unavoidable noise, errors cannot be avoided when information is transmitted through the channel. How to control the errors in PCM signal data communication and improve the reliability of data transmission and storage is an important content of digital communication. At present, the sig...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/00H03M9/00H03M13/11
CPCH04L1/0061H03M9/00H03M13/1174
Inventor 伍浩文翟鹏
Owner HUBEI SANJIANG SPACE XIANFENG ELECTRONICS&INFORMATION CO LTD
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