WIFI无线局域网中分层空时分组码检测算法研究  

Research on Detection Algorithm of Iayered Space-time Block Code in WIFI Wireless LAN

作　　者：张德洪[1] 

机构地区：[1]集美大学教育学院,福建厦门361021

出　　处：《科技通报》2012年第12期45-47,共3页Bulletin of Science and Technology

摘　　要：为了增加数据传输速率并且提高频谱利用率,WIFI中采用分层空时分组码,分层空时分组码的检测决定着接收机的性能。本文详细推导了分组干扰抑制算法的原理,并且给出了基于分组干扰抑制的最优排序串行算法,针对该算法需要进行大量的数据排序运算,提出了一种次优排序算法。在WIFI信道环境B下,利用MATLAB对最优与次优排序算法进行仿真。实验结果表明,次优排序算法的性能接近于最优排序算法,但该算法使接收机复杂度大大降低。In order to increase the data transfer rate and improve the spectrum utilization rate,WIFI adopts layered space-time block coding,thus layered space-time block code detecting determines the performance of the receiver.A detailed derivation of the group interference suppression algorithm is presented,and the optimal serial sorting algorithm based on group interference suppression algorithm is studied.The algorithm requires a great deal of data sorting operation,and a kind of suboptimal sorting algorithm is worked out.Under the condition of WIFI channel B,the optimal and suboptimal scheduling algorithm is simulated using MATLAB.The result shows that the performance of the suboptimal algorithm is close to the optimal sorting algorithm,and it can reduce complexity of the receiver greatly.

关 键 词：分层空时分组码 分组干扰抑制 串行排序 次优排序 

分 类 号：TN911[电子电信—通信与信息系统]