Efficient algorithms for outage minimization in parallel fading channels with limited feedback
Allerton'09 Proceedings of the 47th annual Allerton conference on Communication, control, and computing
Distortion outage minimization in rayleigh fading using limited feedback
GLOBECOM'09 Proceedings of the 28th IEEE conference on Global telecommunications
Outage behavior of slow fading channels with power control using partial and erroneous CSIT
IEEE Transactions on Information Theory
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We treat the problem of outage minimization via power control in MIMO systems with quantized feedback. We formulate the optimal quantized power control design for a general MIMO system and provide the numerical procedure for finding the optimal solution. Our results not only extend but also show the deficiency of the existing quantized power control schemes for MISO systems. We further propose a design based on the pre-evaluation of the packet error rate performance of practical MIMO systems employing short-length LDPC codes and QAM modulations and with possibly unreliable feedback links. It is demonstrated that with only a few bits of feedback, the resulting quantized power control strategy achieves considerable gain over a system without power control.