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《Acta Electronica Sinica》 2003-05
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Sub-Optimal Detection Algorithm of V-BLAST

TAO Xiao feng,YU Zhui zhuan,QIN Hai yan,ZHANG Ping (P.O.BOX 92,Wireless Technologies Innovation Lab,Beijing University of Posts and Telecommunications,Beijing 100876,China)  
The theoretic capacity of V BLAST systems has been shown to be significantly higher than that of single antenna systems in Rayleigh fading channel,which is why research on V BLAST systems has been a hotspot recently.In an attempt to realize V BLAST systems,a lot of V BLAST detection algorithms have been put forward.However,the complexity of these algorithms is quite high due to many pseudoinversing,nulling and ordering operations,which limit the implementation of V BLAST in practical system.Aiming at this,new sub optimal detection algorithms are proposed here from an entirely fresh point of view.These algorithms take the advantages of Greville′s recursive property and obtain all the nulling vectors during the procedure of getting the pseudoinverse of the channel matrix.Simulation results show that these algorithms have good performance with much lower computational complexity.
【Fund】: SiemensAG ;十五 863项目 (No 2 0 0 1AA1 2 30 1 6)
【CateGory Index】: TN929.54
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