基于IEEE802.11a链路仿真.docVIP

通信与信息工程学院 专业课程设计B报告 专业班级： 学生姓名： 学号(班内序号): 题目：基于IEEE802.11a链路仿真 一、摘要 IEEE802.11a是应用于无线局域网的802.11规范族中的一个规范，主要用在接入式集线器中，为无线ATM系统提供规范。使用IEEE802.11a规范的网络运行于无线频率在5.725GHz到5.850GHz之间的环境下。这个规范使用正交频分复用技术，这种技术尤其适合应用于办公室局域网。在IEEE802.11a规范中，数据速率可以达到54Mb/sIEEE802.11a拥有12条不相互重叠的频道，8条用于室内，4条用于点对点传输 关键字： IEEE802.11a，正交频分多路复用，加扰，解扰，卷积编码，解卷积编码，交织，解交织，星座映射，逆星座映射，同步 Abstract IEEE802.11a is used in wireless LAN 802.11 family of specifications in a specification , mainly used in access hubs , and provide specifications for the wireless ATM systems. In between 5.725GHz to 5.850GHz environment using IEEE802.11a standard network operating in radio frequency . This specification uses orthogonal frequency division multiplexing , this technique is particularly suitable for the office LAN. In IEEE802.11a specification using 52 sub-carriers of orthogonal frequency division multiplexing , the data rate can reach 54Mb / s. IEEE802.11a not have 12 overlapping channels , eight for indoor , 4 for point to point transmission . The curriculum design , we use the matlab simulation platform to simulate the implementation process IEEE802.11a agreement, namely : Fundamentals of wireless communication systems development and research , OFDM systems , IEEE802.11a physical layer specification , IEEE802.11a simulation simulation platform to build and link performance . Simulation link which has three parts: the transmitter, channel and receiver. Programming IEEE802.11a leader sequence generation protocol , the realization of the input data scrambling, descrambling , convolution coding, deconvolution coding, interleaving , de- interleaving, constellation mapping, inverse constellation mapping and synchronization process . The link can be found by simulation using synchronization techniques can significantly improve the BER performance of the system . Keywords: IEEE802.11a, orthogonal frequency division multiplexing, scrambling, descrambling, convolutional coding, c