Paper Info
Title
Codebook Design for LTE-A Downlink System
Abstract
Multiple-input multiple-output (MIMO) has been adopted by long term evolution (LTE) and its updated version LTE-Advanced (LTE-A) to increase the spectrum efficiency. However, the benefits of multi-user (MU) MIMO highly rely on the accurate channel knowledge at the transmitter. So proper codebook design is a key problem for LTE-A FDD downlink system. In this paper, a codebook design with phase adjustment in the precoder targeting wideband channel properties is proposed. The average cell spectrum efficiency and cell-edge user spectrum efficiency of the proposed scheme are evaluated through system level simulation and compared to the discrete Fourier transform (DFT) based feedback scheme. The results show that the proposed codebooks significantly improve feedback efficiency and system performance for co-polarized linear antenna array.
Year
DOI
Venue
2011
10.1109/VETECF.2011.6092993
VTC Fall
Keywords
Field
DocType
codebook design,dft based feedback scheme,precoder targeting wideband channel properties,codecs,copolarized linear antenna array,precoding,multiple-input multiple-output,lte-a downlink system,lte-a fdd downlink system,cell-edge user spectrum,discrete fourier transform,telecommunication channels,feedback,discrete fourier transforms,feedback efficiency,mimo communication,long term evolution,mimo,multi-user mimo,linear antenna arrays,system performance,spectrum,downlink,vectors,antenna array
Computer science,Antenna array,MIMO,Electronic engineering,Spectral efficiency,Discrete Fourier transform,Precoding,LTE Advanced,Codebook,Telecommunications link
Conference
Volume
Issue
ISSN
null
null
1090-3038
ISBN
Citations 
PageRank 
978-1-4244-8328-0
4
0.49
References 
Authors
1
4
Name
Order
Citations
PageRank
Lu Wu1102.05
J. Chen211223.18
Hongwei Yang3263.18
Di Lu4141.94