Title :
Two Novel Upper Bounds on the Sum Rate of MIMO ZF Receivers
Author :
Matthaiou, Michail ; Zhong, Caijun ; Ratnarajah, Tharm
Author_Institution :
Dept. of Signals & Syst., Chalmers Univ. of Technol., Gothenburg, Sweden
Abstract :
In this paper, we introduce two novel upper bounds on the achievable sum rate of multiple-input multiple-output (MIMO) systems with Zero-Forcing (ZF) receivers. The presented bounds are given in tractable closed-form and apply for different fading models, like uncorrelated/doubly correlated Rayleigh fading and Ricean fading. In addition, the first bound establishes an interesting relationship between the sum rate and the first negative moment of the unordered eigenvalue of the instantaneous correlation matrix. Based on our analytical expressions, we are able to explore the impact of the model parameters, such as number of antennas, spatial correlation and Ricean-K factor, on the sum rate of MIMO ZF receivers.
Keywords :
MIMO communication; Rayleigh channels; Rician channels; eigenvalues and eigenfunctions; matrix algebra; radio receivers; MIMO ZF receivers; Ricean fading model; Ricean-K factor; antennas; instantaneous correlation matrix; multiple-input multiple-output system; spatial correlation; uncorrelated-doubly correlated Rayleigh fading model; unordered eigenvalue first negative moment; upper bounds; zero-forcing receiver; Correlation; MIMO; Rayleigh channels; Receivers; Signal to noise ratio; Upper bound;
Conference_Titel :
Global Telecommunications Conference (GLOBECOM 2011), 2011 IEEE
Conference_Location :
Houston, TX, USA
Print_ISBN :
978-1-4244-9266-4
Electronic_ISBN :
1930-529X
DOI :
10.1109/GLOCOM.2011.6133693
