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CHANNEL QUANTIZATION DESIGN IN MULTIUSER MIMO SYSTEMS: ASYMPTOTIC VERSUS PRACTICAL CONCLUSIONS

Full Paper at IEEE Xplore

Multiuser and Network MIMO

Presented by: Emil Björnson, Author(s): Emil Björnson, Konstantinos Ntontin, Björn Ottersten, KTH - Royal Institute of Technology, Sweden

Feedback of channel state information (CSI) is necessary to achieve high throughput and low outage probability in multiuser multiantenna 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. Therefore, we propose a quantization framework and evaluate the tradeoff between directional and quality feedback under practical conditions.

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  Lecture Information

Recorded: 2011-05-27 15:05 - 15:25, Club E
Added: 20. 6. 2011 05:07
Number of views: 40
Video resolution: 1024x576 px, 512x288 px
Video length: 0:22:33
Audio track: MP3 [7.63 MB], 0:22:33