基于802.11b低速率无线局域网码元同步方法设计  

The design of symbol synchronization of low rate wireless local area network based on 802.11b

作　　者：王天伟[1] 刘毓[1] 王选宏[1] 

机构地区：[1]西安邮电大学通信与信息工程学院,陕西西安710121

出　　处：《西安邮电学院学报》2012年第5期15-19,共5页Journal of Xi'an Institute of Posts and Telecommunications

基　　金：陕西省教育厅专项科研基金资助项目(2010JK832)

摘　　要：以802.11b协议为依据,提出一种低速率无线局域网(W-LAN)快速高效的码元同步方法。首先利用峰均比(PAR)研究传输波形对无线局域网码元同步的影响,选择出最佳的传输波形,并利用在信息码中抽值的方法来提高同步速率。通过误码率验证了此方法在低信噪比时仍有较好的同步效果,并且系统的速率提高了10倍。此同步设计快速高效,满足了工程需要。According to the 802.11b,a high-rate and excellent-efficiency method of symbol synchronization of low rate wireless local area network（W-LAN） is introduced.Firstly,in order to choose the best transmission-waveform,the influence of transmission-waveform on symbol synchronization of wireless local area network is analyzed by using the peak-to-average ratio（PAR）.And by extracting the symbols from the information codes,the rate of symbol synchronization is improved.Based on bit error rate,not only the excellent efficiency of symbol synchronization is verified in low signal-to-noise ratio（SNR） by using the method,but also the rate of symbol synchronization is improved by ten percent.The excellent-efficiency and high-rate design meets the needs of actual project.

关 键 词：码元同步 传输波形 峰均比 误码率 

分 类 号：TN929.5[电子电信—通信与信息系统]