DS-SS/EBPSK调制的码分多址研究

张鹏; 吴乐南

doi:10.11959/j.issn.1000-0801.2015031

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DS-SS/EBPSK调制的码分多址研究

研究与开发 | 更新时间：2024-06-05

- DS-SS/EBPSK调制的码分多址研究
- Research on Code-Division Multiple-Access of DS-SS/EBPSK Modulation
- 电信科学 2015年31卷第1期页码：41-45
- 作者机构：
- 作者简介：
  
  [ "张鹏，男，东南大学信息科学与工程学院博士生，主要研究方向为通信信号处理。" ]
  [ "吴乐南，男，东南大学信息科学与工程学院教授、博士生导师，东南大学多媒体技术研究所所长，江苏省数码技术工程研究中心主任，主要研究方向为通信信号处理和多媒体信息处理。" ]
- 基金信息：
  
  国家科技支撑计划资助项目;The National Key Technology R＆D Program(2012BAH15B02);国家自然科学基金资助项目;The National Natural Science Foundation of China(61271204)
- DOI：10.11959/j.issn.1000-0801.2015031
  中图分类号：
- 网络出版日期：2015-01，
  
  纸质出版日期：2015-01-20
- 稿件说明：
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张鹏, 吴乐南. DS-SS/EBPSK调制的码分多址研究[J]. 电信科学, 2015,31(1):41-45.

Peng Zhang, Lenan Wu. Research on Code-Division Multiple-Access of DS-SS/EBPSK Modulation[J]. Telecommunications science, 2015, 31(1): 41-45.
张鹏, 吴乐南. DS-SS/EBPSK调制的码分多址研究[J]. 电信科学, 2015,31(1):41-45. DOI： 10.11959/j.issn.1000-0801.2015031.

Peng Zhang, Lenan Wu. Research on Code-Division Multiple-Access of DS-SS/EBPSK Modulation[J]. Telecommunications science, 2015, 31(1): 41-45. DOI： 10.11959/j.issn.1000-0801.2015031.

摘要

为了实现直序扩频扩展的二元相移键控（DS-SS/EBPSK）调制的多址通信，研究了一种 DS-SS/EBPSK调制的码分多址实现方法。首先对DS-SS/EBPSK调制信号进行分析，公式化表述了DS-SS/EBPSK 的调制过程，得到了可用于解扩和码分多址的等效扩频序列；在此基础上，设计了相关接收机对DS-SS/EBPSK调制信号进行检测，利用不同用户扩频序列互相关很小的特点实现多址传输；最后以m 序列为例，仿真了期望用户的误码性能与用户数量和m序列周期长度的关系。仿真结果验证了此种码分多址实现方式的可行性，同时也表明多用户的干扰程度取决于扩频序列之间的互相关性。

Abstract

In order to realize multiple-access communication of direct sequence spread spectrum extended binary phase shift keying（DS-SS/EBPSK）modulation

a realization method based on code-division was researched. Firstly

based on the analysis of DS-SS/EBPSK modulation signal

the effective spread spectrum sequence which can be used for dispreading and code division multiple-access was obtained by formulizing the DS-SS/EBPSK modulation process. Then

the correlation receiver for DS-SS/EBPSK modulation signal detection was designed and the multiple-access transmission was realized by making use of the small-scale cross-correlation of different spread spectrum sequences. Finally

take m sequence for example

the relationship between bit error rate（BER） performance of the expected user and the number of users was simulated

so did the relationship between BER performance of the expected user and the cycle length of m sequence. The simulation results demonstrate the feasibility of the code-division multiple-access realization method and indicate that the interference degree depends on the cross-correlation of the spread spectrum sequences.

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Keywords

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