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A General Method for Enhancing the Comprehensive Performance of Direct Spread Communication System

A technology of a communication system and a general method is applied in the general field of enhancing the comprehensive performance of the direct spread communication system, and can solve the problems of excessive spread spectrum pseudocode resources, limited versatility, limited transmission data rate, etc., and achieves the enhancement of the comprehensive performance of the system. , the effect of enhancing the information transmission rate

Active Publication Date: 2021-11-05
SHENYANG LIGONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, this kind of technology still has problems such as limited transmission data rate and excessive spread spectrum pseudo code resources. When the spread spectrum pseudo code resources that the system bears are limited, the information rate cannot be increased, thus limiting Its versatility, therefore, under the premise of saving the spread spectrum pseudo-code resources, it is crucial to improve the general method research of direct spread (abbreviation of direct sequence spread spectrum) transmission rate and enhanced frequency band utilization

Method used

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  • A General Method for Enhancing the Comprehensive Performance of Direct Spread Communication System
  • A General Method for Enhancing the Comprehensive Performance of Direct Spread Communication System
  • A General Method for Enhancing the Comprehensive Performance of Direct Spread Communication System

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Embodiment Construction

[0011] The technical principle of the signal sending end is as follows:

[0012] Step1: Let the total information to be transmitted be d S , the application system divides the total information into two parts according to the spread spectrum gain requirements, namely the modulation information d' and the non-modulation information d". Among them, the modulation information is the information part of the actual spread spectrum transmission. The non-modulation information is from the total The information except the modulation information is removed from the information.

[0013] Firstly, the non-modulation information d” is compressed by Huffman coding technology, and the compressed non-modulation information is obtained, which is defined as compressed information d. Among them, Huffman[·] is the Huffman compression function.

[0014] d = Huffman[d"] (1).

[0015] The rate R' of the modulation information d' and the rate of the system's spreading pseudo-code jointly determine...

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Abstract

A general method for enhancing the comprehensive performance of a direct spread communication system belongs to the technical field of direct spread communication systems. The invention can solve the problems of difficulty in increasing the information transmission rate in the spread spectrum communication system, waste of spread spectrum pseudo-code resources and the like. The present invention can not only control the spread spectrum gain according to the requirements of the application system, but also greatly enhance the information transmission rate without wasting a large amount of spread spectrum pseudo-code resources, and can be commonly used in all direct spread system systems without subverting the original system While maintaining the basic structure, the comprehensive performance of the system is enhanced.

Description

technical field [0001] The invention belongs to the technical field of direct-spread communication systems, in particular to a general method for enhancing the comprehensive performance of direct-spread communication systems, which is suitable for high-performance applications of all communication systems based on direct-spread systems. Background technique [0002] Direct Sequence Spread Spectrum (DSSS), which has many advantages such as wide spectrum, low signal-to-noise ratio, easy implementation of code division multiple access, confidentiality and strong anti-interference ability, is widely used in many fields. With the continuous improvement of application requirements, especially the requirements of information transmission rate and spectrum efficiency, the advantages of traditional direct spread have been tested. For this reason, multi-ary system spread spectrum, parallel combined spread spectrum and code index have emerged modulation technique. However, at present,...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B1/69H04B1/707
CPCH04B1/69H04B1/707
Inventor 刘芳
Owner SHENYANG LIGONG UNIV