Outage Behavior of MIMO Channels with Partial Feedback and Minimum Multiplexing Gains
2006 (English)In: 2006 IEEE International Symposium on Information Theory, Vols 1-6, Proceedings, New York, USA: IEEE , 2006, 2694-2698 p.Conference paper (Refereed)
The diversity-multiplexing (D-M) tradeoff over a multiantenna channel with resolution-constrained 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 rate adaptation is important in obtaining a high diversity gain even at high rates. The class of extended approximately universal codes is shown to be tradeoff optimal. With codes from this class, the optimal D-M tradeoff is achievable by the combination of a feedback-dependent power controller and only two codebooks. Two novel lower bounds to the optimal D-M tradeoff based on Gaussian coding arguments are presented. These bounds are only asymptotically tight, but can quickly approach the optimal tradeoff even with moderate codeword lengths.
Place, publisher, year, edition, pages
New York, USA: IEEE , 2006. 2694-2698 p.
Feedback control, Gain control, MIMO systems, Multiplexing, Power control
IdentifiersURN: urn:nbn:se:kth:diva-5715DOI: 10.1109/ISIT.2006.262143ISI: 000245289705054ScopusID: 2-s2.0-39049139421ISBN: 978-1-4244-0505-3OAI: oai:DiVA.org:kth-5715DiVA: diva2:10168
IEEE International Symposium on Information Theory, Seattle, WA, JUL 09-14, 2006
QC 20101117. Uppdaterad från In press till Published (20101117)2006-05-112006-05-112011-12-22Bibliographically approved