一种MIMO-OFDM无线通信系统的设计与仿真.pdfVIP

4 8 4 2008 4 T elecommun icat ion Eng ineer ing A pr. 2008 : 1001- 893X ( 2008) 04 - 0030 - 04 * 一种M IMO- OFDM 无线通信系统的设计与仿真 吴 虹, 丁 勇, 赵迎新, 谭卫毅, 宋士天, 戈立军 ( 300071) : 通过研究多输入多输出正交频分复用(M IM O - OFDM )系统的基本原理 设计了两发一收和两 发两收的相应系统 数字调制方式采用多进制相移键控调制 空时编码采用 A lamouti方案 信道编码 采用RS 编码利用M atlab软件对该系统进行了仿真 并分析了系统的差错性能仿真结果表明 该方 案设计正确 系统不仅具有较高的频谱利用率和较好的差错性能 而且具有较高的应用价值 : 移动通信; M IM O - O FDM ; 空时编码; 多进制相移键控 : TN 929. 5 : A D esign and Implem entation of a M IM O - OFDM W ireless Comm unication Sy stem WUH ong, D IN G Yong, ZHAO Ying - x in, TAN W ei- y i, SON G Shi- tian, GE li- jun ( Co llege of Inform ation T echno logy N anka iU niversity T ian jin 300071 China) Abs tract: T he b asic theory of M u lt iple - Input M u lt iple - Output- O rthogonal Frequency D iv ision M ult-i plex ing ( M IM O - OFDM ) system s is stud ied 2T x 1Rx and 2Tx2Rx system s are designed in w hich M ult-i phase Shift K eying (M PSK ) is u sed as d ig ital m odulation A lam outi Coding technology is used as sp ace- tmi e cod ing and R eed - Solom on ( R S) cod ing is u sed as channe l cod ing. T he system is smi ulated by u- sing M at lab and system perform ance is ana lyzed. T he smi ulat ion results confirm that the design schem e is feasib le. The system h as no t on ly h igh spectral effic iency but a lso low BER and it h asw ide application s. Key w ord s: m ob ile comm un icat ion; M IM O - OFDM; space tmi e coding; MPSK m odu lation [ 1] 1