一种改进的CCK调制解调方案与FPGA实现-北京邮电大学学报.PDF

2004 6 Jun. 2004 27 3 Journal of Beijing University of Posts and Telecommunications Vol. 27 o. 3 　　: 1007-5321(2004) 03-0033-05 CCK FPGA 杨　震,　崔丙锋,　王亚丹,　 丁　炜 (, 100876) : 802. 11 , b 17. 6 Mbit /s. , 16 bit . , 16 802. 11 8 . bit b bit FW T(fast Walsh transform) ( FPGA). 　　: ; ; : T 911　　　: A An Improved Option of CCK Modulation and Demodulation and Its Implementation with FPGA YA G Zhen,　CUI Bing-feng,　WA G Ya-dan,　 DI G Wei ( Continuing Education School Beijing University of Posts and Telecommunications Beijing, , 100876, China) Abstract: A new method of modulation and demodulation used in 802. 11b wireless - - ( ) , local area networks WLA physical layer was proposed with which the data 17. 6 / . 16 transmission rate could reach to Mbit s A 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 AWG( ) 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 ( FW T) 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