Cochannel interference suppression through time/space diversity
IEEE Transactions on Information Theory
Combining beamforming and orthogonal space-time block coding
IEEE Transactions on Information Theory
What is the value of limited feedback for MIMO channels?
IEEE Communications Magazine
A simple transmit diversity technique for wireless communications
IEEE Journal on Selected Areas in Communications
Effects of quantization on channel-orthogonalized STBCs with different orthogonization schemes
WiCOM'09 Proceedings of the 5th International Conference on Wireless communications, networking and mobile computing
On angle feedback and antenna shuffling in double space-time transmit diversity systems
IEEE Communications Letters
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High data rate space time/frequency block coding (STBC/SFBC) suffers from interference due to its non-orthogonal structure of the effective channel. This paper presents new STBC/SFBC scheme to suppress interference with an aid of angle feedback. The proposed scheme achieves the full diversity gain with the spatial code rate of two by rotating constellation symbols in STBC/SFBC codewords. We find the closed form solution for the feedback angle and propose 1-bit feedback criterion. Simulation shows that the proposed scheme with 1-bit feedback improves the system performance significantly.