Channel quantization design in multiuser MIMO systems: Asymptotic versus practical conclusions
2011 (English)In: Acoustics, Speech and Signal Processing (ICASSP), 2011 IEEE International Conference on, IEEE Signal Processing Society, 2011, 3072-3075 p.Conference paper (Refereed)
Feedback of channel state information (CSI) is necessary to achieve high throughput and low outage probability in multiuser multi antenna systems. There are two types of CSI: directional and quality information. Many papers have analyzed the importance of these in asymptotic regimes. However, we show that such results should be handled with care, as very different conclusions can be drawn depending on the spatial correlation and number of users. There fore, we propose a quantization framework and evaluate the tradeoff between directional and quality feedback under practical conditions.
Place, publisher, year, edition, pages
IEEE Signal Processing Society, 2011. 3072-3075 p.
, International Conference on Acoustics Speech and Signal Processing ICASSP, ISSN 1520-6149
asymptotic regime; channel quantization design; channel state information; directional feedback; directional information; multiuser MIMO system;multiuser multiple antenna system;outage probability;quality feedback;quality information;quantization framework; spatial correlation; MIMO communication; antenna arrays; correlation methods;directive antennas;feedback; multiuser channels; probability; quantisation (signal); wireless channels;
IdentifiersURN: urn:nbn:se:kth:diva-52848DOI: 10.1109/ICASSP.2011.5946307ISI: 000296062403121ScopusID: 2-s2.0-80051628301OAI: oai:DiVA.org:kth-52848DiVA: diva2:467950
IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP), Prague, MAY 22-27, 2011
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QC 201112212011-12-212011-12-202012-03-22Bibliographically approved