An Efficient Power Allocation Scheme for Leakage-Based Precoding in Multi-Cell Multiuser MIMO Downlink

Author

Feng, Shu ; Wang, Michael Mao ; Yaxi, Wang ; Haiqiang, Fan ; Jinhui, Lu

Author_Institution

Dept. of Commun. Eng., Nanjing Univ. of Sci. & Technol., Nanjing, China

Volume

15

Issue

10

fYear

2011

fDate

10/1/2011 12:00:00 AM

Firstpage

1053

Lastpage

1055

Abstract

To enhance the sum rate of maximizing signal-to-leakage-and-noise ratio (Max-SLNR), a power allocation (PA) scheme that combines the noise and interference whitening, the singular value decomposition, and the water-filling algorithms is proposed for Max-SLNR per user as opposed to the per antenna of users. Simulation shows that the proposed approach produces higher sum rate than the Max-SLNR per antenna scheme and the Max-SLNR per user with equal PA (EPA). It is also better in bit error rate than the Max-SLNR per user with EPA in the presence of shadow fading and receiving antenna correlation.

Keywords

MIMO communication; cellular radio; error statistics; fading channels; precoding; singular value decomposition; BER; Max-SLNR per antenna scheme; Max-SLNR per user; SVD; bit error rate; interference whitening; leakage-based precoding; maximizing signal-to-leakage-and-noise ratio; multicell multiuser MIMO downlink; noise whitening; power allocation scheme; receiving antenna correlation; shadow fading; singular value decomposition; water-filling algorithms; Bit error rate; Fading; Interference; MIMO; Receiving antennas; Signal to noise ratio; Max-SLNR; Power allocation; SVD; interference and noise whitening; sumrate; water-filling;

fLanguage

English

Journal_Title

Communications Letters, IEEE

Publisher

ieee

ISSN

1089-7798

Type

jour

DOI

10.1109/LCOMM.2011.081011.110803

Filename

5997329