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ON OPTIMAL PRECODING IN WIRELESS MULTICAST SYSTEMS

Multiuser and Network MIMO

Full Paper at IEEE Xplore

Přednášející: Andrew Harms, Autoři: Yiyue Wu, Haipeng Zheng, Robert Calderbank, Sanjeev R. Kulkarni, H. Vincent Poor, Princeton University, United States

Precoding has been extensively studied for point-to-point communications, including the problems of constructing the precoding codebook and selecting the best precoder. This paper investigates precoding for a multicast channel in which a base station is sending the same information to all users and each user sends back the index of its best precoding matrix. It is assumed that users do not collaborate and that no channel state information is known at the base station. Optimization problems are formulated to reduce the packet drop rate. A set of probabilistic algorithms that effectively reduce the average package drop rate are presented. It is shown numerically that these new schemes lead to significant improvements.

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  Informace o přednášce

Nahráno: 2011-05-27 14:45 - 15:05, Club E
Přidáno: 21. 6. 2011 17:10
Počet zhlédnutí: 48
Rozlišení videa: 1024x576 px, 512x288 px
Délka videa: 0:15:40
Audio stopa: MP3 [5.27 MB], 0:15:40