Finally, the third topic is to speed up the decoding algorithm for the vertical Bell Laboratories layered space-time (V-BLAST) scheme, a full rate STBC that however does not exploit any transmit diversity gain. A fast recursive algorithm for V-BLAST with the optimal ordered successive interference cancellation (SIC) detection has been proposed and two improved algorithms for it have also been independently introduced by different authors lately. We first incorporate the existing improvements into the original fast recursive algorithm to give an algorithm that is the fastest known one for the optimal SIC detection of V-BLAST. Then, we propose a further improvement from which two new algorithms result. Relative to the fastest known one from the existing improvements, one new algorithm has a speedup of 1:3 times in both the number of multiplications and the number of additions, and the other new algorithm requires less memory storage.As we can expect from Fig. 2.4(a), while the concatenated outer code has significantly improved the performances for all the three codes, the overlapped Alamouti code still outperforms the others. One can also see in Fig. 2.4(b) that for theanbsp;...
|Title||:||Space-time Code Designs and Fast Decoding for MIMO and Cooperative Communication Systems|
|Publisher||:||ProQuest - 2008|