In this paper we address the problem of the design of a transmitter
in a Multi-Input-Multi-Output (MIMO) space diversity system.
We consider a design which is robust to errors in the channel estimate
available at the transmitter. The design is based on the minimization
of the necessary transmit power while guaranteeing a
minimum and specified Quality of Service (QoS) in terms of Signal
to Noise Ratio (SNR) with a certain probability. According
to this objective, the transmitter exploits all the eigenmodes of the
MIMO channel estimate, distributing the transmit power in a robust
way among the channel modes by using orthonormal temporal
signatures. In order to guarantee a full rate transmission, the orthonormal
temporal signatures designed for real constellations in
Orthogonal Space Time Block Codes (OSTBC) are used, leading
to a system structure based on the combination of OSTBC and orthogonal
CitationPascual-Iserte, A.; Pérez, A.; Lagunas, M. A maximum approach for robust MIMO design: combining OSTBC and beamforming with minimum transmission power requirements. A: IEEE International Conference on Acoustics, Speech, and Signal Processing( ICASSP 2004). "IEEE International Conference on Acoustics, Speech, and Signal Processing ( ICASSP 2004)". Montreal: 2004, p. 1-4.
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