Title :
An efficient block diagonalization method for multiuser MIMO downlink
Author :
An, Jie ; Liu, Yuan-an ; Liu, Fang
Author_Institution :
Sch. of Electron. Eng., Beijing Univ. of Post & Telecommun., Beijing, China
Abstract :
Block diagonalization (BD) based on singular value decomposition (SVD) is a well-known precoding method that eliminates interuser interference in multiuser multi-input multi-output (MIMO) broadcast channels, but it is computationally inefficient. In this paper, we propose an alternative method replacing SVD to obtain the precoding matrix in the BD scheme. Analysis and simulation results show that our proposal has lower complexity than the conventional BD method, while there is no any degradation in sum throughput.
Keywords :
MIMO communication; broadcast channels; interference suppression; precoding; singular value decomposition; SVD; block diagonalization method; conventional BD method; inter-user interference elimination; multiuser MIMO downlink; multiuser multi-input multi-output broadcast channels; precoding matrix; singular value decomposition; sum throughput; Algorithm design and analysis; Base stations; Complexity theory; Downlink; MIMO; Receiving antennas; MIMO; broadcast channels; multiuser; precoding;
Conference_Titel :
Consumer Electronics, Communications and Networks (CECNet), 2012 2nd International Conference on
Conference_Location :
Yichang
Print_ISBN :
978-1-4577-1414-6
DOI :
10.1109/CECNet.2012.6201765
