Performance comparison of limited feedback codebook-based downlink beamforming schemes for Distributed Antenna Systems

Author

Prabhu, Vinay Uday ; Karachontzitis, Sotiris ; Toumpakaris, Dimitris

Author_Institution

Dept. of Electr. & Comput. Eng., Univ. of Patras, Patras, Greece

fYear

2009

fDate

17-20 May 2009

Firstpage

171

Lastpage

176

Abstract

In this paper, we consider limited feedback codebook-based downlink beamforming involving two remote antenna units with two antennas each transmitting to a single-antenna mobile terminal. A central unit to which the two remote antenna units are connected enables centralized joint beamforming. We consider different practical channel scenarios that may arise in distributed antenna systems and gauge the performance of the Grassmannian, Kerdock and Unitary-DFT codebooks. We then compare the performance when modified code books that exploit information such as transmit antenna correlation are used. We conclude the paper by listing the strengths and drawbacks of each of the three codebooks.

Keywords

antenna arrays; mobile radio; transmitting antennas; Grassmannian codebook; Kerdock codebook; Unitary-DFT codebook; distributed antenna systems; downlink beamforming schemes; limited feedback codebook; remote antenna units; single-antenna mobile terminal; Antenna feeds; Array signal processing; Channel state information; Downlink; Laboratories; Mobile antennas; Optical transmitters; Rayleigh channels; State feedback; Transmitting antennas;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless Communication, Vehicular Technology, Information Theory and Aerospace & Electronic Systems Technology, 2009. Wireless VITAE 2009. 1st International Conference on

Conference_Location

Aalborg

Print_ISBN

978-1-4244-4066-5

Electronic_ISBN

978-1-4244-4067-2

Type

conf

DOI

10.1109/WIRELESSVITAE.2009.5172445

Filename

5172445