一种改进的CCK调制解调方案与FPGA实现  

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

作　　者：杨震[1] 崔丙锋[1] 王亚丹[1] 丁炜[1] 

机构地区：[1]北京邮电大学继续教育学院,北京100876

出　　处：《北京邮电大学学报》2004年第3期33-37,共5页Journal of Beijing University of Posts and Telecommunications

基　　金：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)

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17.6Mbit/s.基于多相位补偿码理论,给出了16bit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,16bit补偿码比802.11b标准中8bit补偿码具有更好的性能.最后给出了解码的FWT(fastWalshtransform)算法以及调制解调系统的现场可编程门阵列(FPGA)硬件实现.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.

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 

分 类 号：TN911[电子电信—通信与信息系统]