WSEAS TRANSACTIONS on COMMUNICATIONS
Soft-output MMSE V-BLAST detector under ML channel estimation and channel correlation
IEEE Communications Letters
Impact of CSIT on the tradeoff of diversity and spatial multiplexing in MIMO channels
ISIT'09 Proceedings of the 2009 IEEE international conference on Symposium on Information Theory - Volume 2
GLOBECOM'09 Proceedings of the 28th IEEE conference on Global telecommunications
On the impact of channel estimation errors on MAC protocols for MIMO ad hoc networks
IEEE Transactions on Wireless Communications
EURASIP Journal on Wireless Communications and Networking
Wireless Communications & Mobile Computing
Multi-user Multi-stream Vector Perturbation Precoding
Wireless Personal Communications: An International Journal
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We introduce a modified vertical Bell laboratories layered space-time (V-BLAST) detection algorithm to reduce unexpected effects of the channel estimation errors. Assuming that the channel estimation errors are independent and identically distributed Gaussian random variables, we derive a better nulling weight, which minimizes the power of various terms generated by the channel estimation errors. The symbol ordering operation is also modified by choosing the minimum mean-square error symbol at each iteration. The proposed detection algorithm requires the knowledge of channel estimation error's variance, but its performance is robust to the inaccurate estimation of it. The simulation results show that the performance of the proposed algorithm is superior to that of the conventional V-BLAST detection algorithm when channel estimation errors exist