802.11b物理层CCK扩频技术探讨  

Investigation on the physical layer of CCK spread spectrum technique in 802.11b

作　　者：董宁 石明卫[2] 

机构地区：[1]山西网通宽带内容应用中心,山西太原030001 [2]西安邮电学院通信工程系,陕西西安710121

出　　处：《西安邮电学院学报》2007年第3期35-38,59,共5页Journal of Xi'an Institute of Posts and Telecommunications

摘　　要：802.11b无线局域网(Wireless Local Area Network,以下简称WLAN)为了实现高速直接序列扩频(High RateDirect Sequence Spread Spectrum,HR/DSSS)在物理层采用了多相补码键控软扩频调制方式———CCK(Complemen-tary Code Keying)。这种调制方式具有较高的频谱利用率,能够有效的对抗多径干扰和频率选择性衰落,它不仅具有扩频增益而且具有编码增益。In 802.11 b Wireless Local Area Network, the CCK （Complementary Code Keying）is adopted in the physical layer to get High Rate Direct Sequence Spread Spectrum（HR/DSSS）. CCK is of high frequency utilization efficiency and ability to mitigate multi - path interference and frequency - selective fading, with both spreading gain and encoding gain.

关 键 词：无线局域网 物理层 直接序列扩频 补码键控 

分 类 号：TN914.4[电子电信—通信与信息系统]