新的GLSFBC-CDMA-OFDMA发射方案  

Transmit scheme for GLSFBC-CDMA-OFDMA system

作　　者：战金龙[1] 卢建军[1] 卢光跃[1] 

机构地区：[1]西安邮电学院通信与信息工程学院,陕西西安710061

出　　处：《通信学报》2012年第4期99-106,共8页Journal on Communications

基　　金：西安邮电学院中青年教师科研基金资助项目(0001284);陕西省自然科学基金资助项目(1090275);陕西省教育厅科研计划基金资助项目(11JK1011);智能机器人湖北省重点实验室基金资助项目(HBIR201102)~~

摘　　要：提出了频率选择性衰落信道下GLSFBC(group layered SFBC)-CDMA-OFDMA多天线发射方案。该方案分为三级级联设计:第一级(基于OFDMA)用来抑制多用户间的干扰和对抗频率选择性衰落;第二级(基于CDMA)用来消除组间干扰和获得频率分集增益;第三级(基于GLSFBC)用来获得空间分集增益和复用增益。该方案在接收端只需要一根天线就可以抑制空频码组间的干扰和多用户间的干扰,从而使接收机结构简单。理论分析和计算机仿真结果都证明了该方案的有效性。A novel GLSFBC（group layered SFBC）-CDMA-OFDMA multiple antenna transmit scheme was proposed over frequency-selective fading channels.The proposed scheme is based on a three-level design of cascade codes： the first level（based on OFDMA） deals with multi-user interference and frequency-selective fading,the second level（based on CDMA） handles group interference and obtains frequency diversity gain,and the third level（based on GLSFBC） re-sults in space diversity and multiplexing gain.At the receiver,the proposed approach only needs one antenna to suppress both multi-user interference and SFBC group interference,so it makes the receiver construction simple.Both theory analysis and computer simulation prove the validity of the novel technique.

关 键 词：正交频分复用 空频分组编码 组间干扰抑制 码分多址 

分 类 号：TN922[电子电信—通信与信息系统]