北京邮电大学学报

  • EI核心期刊

北京邮电大学学报 ›› 2004, Vol. 27 ›› Issue (3): 33-37.

• 论文 • 上一篇    下一篇

一种改进的CCK调制解调方案与FPGA实现

杨 震, 崔丙锋, 王亚丹, 丁 炜   

  1. 北京邮电大学继续教育学院, 北京100876
  • 收稿日期:2002-04-08 出版日期:2004-03-28
  • 作者简介: 杨 震(1976-), 男, 博士生. E-mail:yz@bupt-bcnl.com
    丁 炜(1935-), 男, 教授, 博士生导师. E-mail:dingwei@bupt.edu.cn
  • 基金资助:
    国家自然科学基金项目(69802003); 教育部博士学科点专项科研基金项目(20020013011)

An Improved Option of CCK Modulation and Demodulation \=and Its Implementation with FPGA

YANG Zhen, CUI Bing-feng, WANG Ya-dan, DING Wei   

  1. Continuing Education School, Beijing University of Posts and Telecommunications, Beijing 100876, China
  • Received:2002-04-08 Online:2004-03-28

摘要: 提出了一种新的802.11b无线局域网物理层调制解调方法,可以把传输速率提高到17.6 Mbit/s。基于多相位补偿码理论,给出了16 bit补偿码的表达式和在加性高斯白噪声信道下的性能分析。计算机仿真结果表明,16 bit补偿码比802.11b标准中8 bit补偿码具有更好的性能。最后给出了解码的FWT(fast Walsh transform)算法以及调制解调系统的现场可编程门阵列(FPGA)硬件实现。

关键词: 补偿码解调, 无线局域网, 现场可编程门阵列硬件实现

Abstract: A new method of modulation and demodulation used in 802.11b wireless local-area-networks (WLAN) physical layer was proposed, with which the data transmission rate could reach to 17.6 Mbit/s. A 16 bit complementary code keying (CCK) code expression upon the theory of multiphase complementary code, is presented. And the behavior has been analyzed with the help of computer simulations in additive white Gaussian noise (AWGN) channel. The simulation result showed that the performance of 16 bit CCK code has more advantages than that of 8 bit CCK code with the 802.11b draft standard. The fast Walsh transform (FWT) decoding algorithm and the field programmable gate array (FPGA) hardware implementation of the CCK modulation/demodulation system was proposed in the final.

Key words: complementary code demodulation, wireless local-area-network, field programmable gate array hardware implementation

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