Journal of Beijing University of Posts and Telecommunications

  • EI核心期刊

JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM ›› 2004, Vol. 27 ›› Issue (3): 33-37.

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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

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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