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Spread spectrum communication method based on PN code serial and parallel combined connection

A spread spectrum communication, code string technology, applied in the field of spread spectrum communication, can solve the problems of reduced reliability, poor bit error rate, increased effectiveness, etc.

Inactive Publication Date: 2012-10-10
三亚哈尔滨工程大学南海创新发展基地
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Problems solved by technology

Parallel combined spread spectrum communication also has some disadvantages: there is little room for improvement in its effectiveness, and its bit error rate is worse than other spread spectrum communications, especially when the number of parallel sequences transmitted in the channel is large, the effectiveness increases. At the same time, the reliability is greatly reduced

Method used

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  • Spread spectrum communication method based on PN code serial and parallel combined connection
  • Spread spectrum communication method based on PN code serial and parallel combined connection
  • Spread spectrum communication method based on PN code serial and parallel combined connection

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Embodiment Construction

[0040] The following examples describe the present invention in more detail:

[0041] Combined with Figure 1, the transmitted spreading sequence adopts the combination of PN code series and parallel, two PN codes are sent in each row, and then r 1 Parallel transmission - equivalent to PN code serial first and then parallel, each line can be expressed as [PN i (t)PN j (t+N T T C )], (i, j=1,2,...,M), abbreviated as [PN i PN j ], called the spread spectrum line. Where PN(t) represents the transmitted PN code, and the number of symbols in each PN code cycle is N T ,T C is the chip period. The main parameter of the communication method of the present invention is r 1 、r 2 , M, where let M and r 2 is an integer power of 2.

[0042] The data sent by this communication method is divided into four parts, corresponding to log 2 r 2 , r 1 log 2 r 2 , 2r 1 . Each part corresponds to an algorithm, and the specific mapping algorithm is as follows.

[0043] 1. Divide M...

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Abstract

The invention provides a spread spectrum communication method based on PN code serial and parallel combined connection. PN codes are connected in series firstly and then are connected in parallel, and two sections of shorter codes can be used for replacing the previous single section of long code; the two sections of shorter codes are used for improved parallel combined spread spectrum communication; the communication transmitted data efficiency is designed according to the serial number corresponding relationship of PN code serial and parallel combined connection, and the performances of effectiveness and reliability of the integral communication are good, and are superior to the conventional parallel combined spread spectrum communication..

Description

technical field [0001] The invention relates to a spread spectrum communication method, in particular to a transmission and reception method of PN code connection combination. Background technique [0002] Modern communication has increasingly high requirements for communication efficiency and reliability. Parallel combined spread spectrum communication is an improved method of soft spread spectrum communication. It is a spread spectrum communication method with high communication efficiency, and inherits the advantages of traditional spread spectrum communication such as anti-interference and anti-detection. This spread spectrum method has been well received by domestic and foreign scholars, and has been introduced in academic journals by domestic and foreign scholars. Parallel combined spread spectrum communication also has some disadvantages: there is little room for improvement in its effectiveness, and its bit error rate is worse than other spread spectrum communicatio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B1/707
Inventor 郭黎利刘明夺刘湘蒲
Owner 三亚哈尔滨工程大学南海创新发展基地
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