准静态受遮蔽的Rician衰落信道中空时格码的性能上界  

Upper Bound on Error Probability for Space-time Trellis Codes Over Quasi-static Shadowed Rician Fading Channels

作　　者：臧国珍[1] 黄葆华[1] 

机构地区：[1]解放军理工大学通信工程学院无线通信系,江苏南京210007

出　　处：《军事通信技术》2008年第1期1-5,10,共6页Journal of Military Communications Technology

基　　金：国家自然科学基金资助项目(60702021)

摘　　要：针对准静态受遮蔽的 Rician 衰落信道,在收端已知信道状态信息的条件下,文中分析了空时格码的性能.推导了码字差相关阵为对角阵的空时格码系统的成对差错概率的确切表达式,得到了相应空时格码在准静态受遮蔽的 Rician 衰落信道中的性能上界。仿真结果表明,在遮蔽不太严重的信道中,文中得到的 union 界与相应编码系统的实际性能有很好的近似度。With the perfect channel state information,the performance of space-time trellis codes over quasi-static shadowed Rician fading channels was analyzed.For space-time trellis code with the codeword difference correlation matrix being diagonal matrix,an exact expression of the pairwise error probability over shadowed Rician fading channels was derived and some upper bounds on the frame and bit error probability of this system obtained.By comparing it with the simulation results,it is showed that the proposed union bounds are very tight when the shadow is not heavy.

关 键 词：空时格码 莱斯衰落 遮蔽 性能界 

分 类 号：TN91[电子电信—通信与信息系统]