On optimal precoding in wireless multicast systems

Journal Article

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. © 2011 IEEE.

Full Text

Duke Authors

Cited Authors

  • Wu, Y; Zheng, H; Calderbank, R; Kulkarni, S; Poor, HV

Published Date

  • August 18, 2011

Published In

Start / End Page

  • 3068 - 3071

International Standard Serial Number (ISSN)

  • 1520-6149

Digital Object Identifier (DOI)

  • 10.1109/ICASSP.2011.5946306

Citation Source

  • Scopus