首页> 外国专利> Method and apparatus for spreading and despreading data in a spread spectrum communication system

Method and apparatus for spreading and despreading data in a spread spectrum communication system

机译：在扩频通信系统中扩频和解扩数据的方法和装置

页面导航

摘要
著录项
相似文献

摘要

A current mode of operation is provided to a Walsh spreader (203), and based on the current mode of operation, the Walsh spreader (203) either varies a Walsh code at a symbol rate, or holds the Walsh code constant. During multi-carrier transmission a first symbol within a data stream (210) is spread with a first Walsh code, while symbols immediately preceding and following the first symbol are spread by a another, differing Walsh code. The sequence of Walsh codes exiting the spreader (201) is further scrambled by a pair of Pseudo-Noise (PN) codes (224) that are held constant for three Walsh code periods during multi-carrier transmission, and are not held constant during direct-spread transmission.

机译：当前操作模式已提供给Walsh扩展器（ 203 ），并且根据当前操作模式，Walsh扩展器（ 203 ）要么在以下位置更改Walsh代码符号率，或保持Walsh码不变。在多载波传输期间，数据流（ 210 ）中的第一个符号用第一个Walsh码扩展，而紧接在第一个符号之前和之后的符号由另一个不同的Walsh码扩展。离开扩频器（ 201 ）的沃尔什码序列进一步被一对伪噪声（PN）码（ 224 ）扰乱，这三个码对于三个沃尔什码保持不变多载波传输过程中的周期，并且在直接扩展传输过程中不保持恒定。 展开▼

著录项

公开/公告号US6324206B1

专利类型

公开/公告日2001-11-27

原文格式PDF

申请/专利权人 MOTOROLA INC.;
展开▼

申请/专利号US20000511228

发明设计人 RON ROTSTEIN;YUDA YEHUDA LUZ;ROBERT JOHN CORKE;
展开▼

申请日2000-02-23

分类号H04L273/00;H04L70/00;A61F20/60;

国家 US

入库时间 2022-08-22 00:47:08

相似文献

专利

外文文献

中文文献

1. 码分多址接入通信系统中对信息信号扩频和解扩的方法与装置 [P] . 中国专利： CN1413393A . 2003-04-23

2. 用于提高扩频通信系统中数据速率的方法和装置 [P] . 中国专利： CN100586118C . 2010.01.27

3. METHOD AND APPARATUS FOR SPREADING AND DESPREADING DATA IN A SPREAD-SPECTRUM COMMUNICATION SYSTEM [P] . 欧洲知识产权局专利： EP1133843A1 . 2001-09-19

机译：在扩频通信系统中扩展和解扩数据的方法和装置

4. METHOD AND APPARATUS FOR SPREADING AND DESPREADING DATA IN A SPREAD-SPECTRUM COMMUNICATION SYSTEM [P] . 世界知识产权组织专利： WO0031904A1 . 2000-06-02

机译：在扩频通信系统中扩展和解扩数据的方法和装置

5. Method and apparatus for spreading and despreading data in a spread- spectrum communication system [P] . 美国专利： US6091759A . 2000-07-18

机译：在扩频通信系统中扩频和解扩数据的方法和装置

1. An Automatic Interference Recognition Method in Spread Spectrum Communication System [J] . YANG Xiao-ming, TAO Ran 兵工学报（英文版） . 2007,第003期

2. HOS AND GA BASED INTERFERENCE REJECTION IN DIRECT SEQUENCE SPREAD SPECTRUM COMMUNICATION SYSTEMS [J] . Gong Xiangyang, Hu Guangrui, Li Taijie 电子科学学刊（英文版） . 2003,第002期

3. HOS AND GA BASED INTERFERENCE REJECTION IN DIRECT SEQUENCE SPREAD SPECTRUM COMMUNICATION SYSTEMS [J] . GongXiangyang, HuGuangrui 电子科学学刊：英文版 . 2003,第002期

4. An Adaptive Anti-jamming and Interference Coding Scheme for Frequency Hop Spread-Spectrum Communication Systems [J] . 梁钊高技术通讯：英文版 . 1995,第002期

5. A new zero-acquisition time spreading/despreading technique for spread-spectrum communication systems [C] . Fair, I.J., Wang, . 1992

6. Multipath channel deconvolution and variable bit-rate methods for spread spectrum communication systems. [D] . Mitrovski, Zoran Ivan. 1998

7. Demodulation of Chaos Phase Modulation Spread Spectrum Signals Using Machine Learning Methods and Its Evaluation for Underwater Acoustic Communication [O] . Chao Li, Franck Marzani, Fan Yang 2018

8. Generalized Self Spread-Spectrum Communications with Turbo Soft Despreading and Decoding [O] . Stefano Tomasin, Daniele Veronesi 2014

9. Application of Autoregressive Methods to Adaptive Excision of Interfering Tones from Direct Sequence Spread Spectrum Communications Systems [R] . Kozminchuk, B. W. 1988

1. The Research on Modeling and Simulation of Direct-sequence Spread Spectrum Communications System Based on Software Radio [J] . Dingxue ,Wu ,Feng . 通讯和计算机 . 2006,第008期

2. 扩频通信系统中扩频码序列平衡性的实现方法研究 [C] . 刘音华 ,中国科学院研究生院 ,卢晓春 . 2005年全国测控、计量、仪器仪表学术年会 . 2005

3. DS/CDMA扩频通信系统中编码捕获方法的研究 [A] . 查长军 . 2007