Limited feedback multiuser MISO systems with differential codebooks in correlated channels

Jawad Mirza, Pawel A. Dmochowski, Peter J. Smith, Mansoor Shafi
2013 2013 IEEE International Conference on Communications (ICC)  
In this paper, we present a differential codebook design by modifying the Grassmannian codebook for a singlecell multiuser (MU) multiple-input single-output (MISO) system operating under spatially and temporally correlated channels. The differential codebook design involves scaling and rotation methods that help a codebook to track the slow varying channel. We propose an adaptive scaling technique that improves the performance of the system in correlated channels without any additional feedback
more » ... information. Monte Carlo simulations show that the proposed differential codebook reduces quantization errors and improves sum-rate performance as compared to other differential codebooks designed for spatially and temporally correlated MISO channels.
doi:10.1109/icc.2013.6655445 dblp:conf/icc/MirzaDSS13 fatcat:tnfqbyehxrdnffdll4q5bw4m4m