Prototype of an M-ary Orthogonal Coded Spread Spectrum System

薛筱明; 李建东

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Prototype of an M-ary Orthogonal Coded Spread Spectrum System

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- Prototype of an M-ary Orthogonal Coded Spread Spectrum System
- Acta Electronica Sinica Issue 1, Pages: 105-110(1998)
- 作者机构：
  
  1. 西安电子科技大学信息科学研究所!西安
  2. 710071
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN914.42
- Published：1998
- 稿件说明：
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[1]薛筱明,李建东.多进制正交码扩频系统的解扩和同步技术及其实现[J].电子学报,1998(01):105-110.

薛筱明, 李建东. Prototype of an M-ary Orthogonal Coded Spread Spectrum System[J]. Acta Electronica Sinica, 1998, (1): 105-110.
[1]薛筱明,李建东.多进制正交码扩频系统的解扩和同步技术及其实现[J].电子学报,1998(01):105-110. DOI：

薛筱明, 李建东. Prototype of an M-ary Orthogonal Coded Spread Spectrum System[J]. Acta Electronica Sinica, 1998, (1): 105-110. DOI：

摘要

本文实现了一个M进制正交码扩频系统，它能传输2．4Kbps和16Kbps两种信息速率数据，并能在低信噪比条件下解扩译码．文中首先讨论了该系统数据的编码扩频和解扩译码的方案，其次讨论了码片采用MSK调制时，本地载频和抽样时钟的初始相位的估计方法，然后提出了在解扩泽码的同时进行相位跟踪的Q支路相关同步法，最后测试了系统的误比特性能．

Abstract

An M-ary Orthognal Coded Spread Spectrum（OCSS） system with 2.4Kbps and 16Kbps data rate is realized. The ereieved signal can be despreaded under low SNR. Firstly

the methods for spreading and despreading are discussed. Secondly

formulations for estimating the carrier and the sampling timing initial phase offset of MSK spread spectrum signal are derived. Thirdly

Q-channel correlation method for phase tracing is proposed. Finally

the bit error rate is measured.

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