On source transmission over MIMO channels with limited feedback
IEEE Transactions on Signal Processing
Joint beamforming for multiaccess MIMO systems with finite rate feedback
IEEE Transactions on Wireless Communications
Diversity gains of power control with noisy CSIT in MIMO channels
IEEE Transactions on Information Theory
Coded modulation with mismatched power control over block-fading channels
ISIT'09 Proceedings of the 2009 IEEE international conference on Symposium on Information Theory - Volume 3
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
On the average rate performance of hybrid-ARQ in quasi-static fading channels
IEEE Transactions on Communications
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
Joint power control and beamforming codebook design for MISO channels with limited feedback
GLOBECOM'09 Proceedings of the 28th IEEE conference on Global telecommunications
Distortion outage minimization in rayleigh fading using limited feedback
GLOBECOM'09 Proceedings of the 28th IEEE conference on Global telecommunications
Energy saving MAC for MIMO systems
ICC'09 Proceedings of the 2009 IEEE international conference on Communications
On the diversity gain in cooperative relaying channels with imperfect CSIT
IEEE Transactions on Communications
Power-controlled feedback and training for two-way MIMO channels
IEEE Transactions on Information Theory
IEEE Transactions on Information Theory
Finite-SNR diversity-multiplexing tradeoff via asymptotic analysis of large MIMO systems
IEEE Transactions on Information Theory
Coded modulation with mismatched CSIT over MIMO block-fading channels
IEEE Transactions on Information Theory
Outage behavior of slow fading channels with power control using partial and erroneous CSIT
IEEE Transactions on Information Theory
Wireless Communications & Mobile Computing
| Hi-index | 755.20 |
The diversity-multiplexing (D-M) tradeoff in a multi antenna channel with optimized resolution-constrained channel state feedback is characterized. The concept of minimum guaranteed multiplexing gain in the forward link is introduced and shown to significantly influence the optimal D-M tradeoff. It is demonstrated that power control based on the feedback is instrumental in achieving the D-M tradeoff, and that rate adaptation is important in obtaining a high diversity gain even at high rates. A criterion to determine finite-length codes to be tradeoff optimal is presented, leading to a useful geometric characterization of the class of extended approximately universal codes. With codes from this class, the optimal D-M tradeoff is achievable by the combination of a feedback-dependent power controller and a single code-book for single-rate or two codebooks for adaptive-rate transmission. Finally, lower bounds to the optimal D-M tradeoffs based on Gaussian coding arguments are also studied. In contrast to the no-feedback case, these random coding bounds are only asymptotically tight, but can quickly approach the optimal tradeoff even with moderate codeword lengths.