Zero-forcing beam-forming and iterarive detection algorithm for multiuser Turbo-BLAST system

Author

Xiao-min Chen ; Xiang-bin Yu ; Tian-Zhen Meng ; Xiao-dan Yu ; Xiao-Shuai Liu ; Qiu-ming Zhu

Author_Institution

Coll. of Electron. & Inf. Eng., Nanjing Univ. of Aeronaut. & Astronaut., Nanjing, China

fYear

2012

fDate

22-26 Oct. 2012

Firstpage

144

Lastpage

147

Abstract

The zero-forcing beam-forming algorithm is proposed and the modified iterative detector is presented for the downlink multiuser Turbo-BLAST system in this paper. At the transmitter, the beam-forming scheme based on zero-forcing rule is adopted to maximize the capacity of the desired user. At the receiver, the pretreatment matrix is used to mitigate the multiuser interference (MUI) and the iterative detecting algorithm is designed to cancel the co-antenna interference (CAI). Simulation results show that the newly introduced method is effective to enhance not only the capacity results but also the BER performance of the downlink multiuser Turbo-BLAST system.

Keywords

array signal processing; interference suppression; iterative methods; matrix algebra; multiuser detection; signal denoising; turbo codes; BER performance; CAI; MUI; coantenna interference cancellation; downlink multiuser turbo-BLAST system; iterative detection algorithm; multiuser interference mitigation; pretreatment matrix; transmitter; zero-forcing beamforming scheme; zero-forcing rule; Iterative detection; Multiuser Turbo-BLAST system; Zero-forcing beamforming;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas, Propagation & EM Theory (ISAPE), 2012 10th International Symposium on

Conference_Location

Xian

Print_ISBN

978-1-4673-1799-3

Type

conf

DOI

10.1109/ISAPE.2012.6408729

Filename

6408729