DocumentCode :
650905
Title :
User assignment for MU-MIMO downlink system based on Munkres algorithm
Author :
Qiang Sun ; Yun Xue ; Yuan Zhang ; Shi Jin ; Xin Li ; Xiqi Gao
Author_Institution :
Nat. Mobile Commun. Res. Lab., Southeast Univ., Nanjing, China
fYear :
2013
fDate :
24-26 Oct. 2013
Firstpage :
1
Lastpage :
6
Abstract :
This paper investigates user assignment algorithms for the downlink multiuser multiple-input multiple-output system with strong correlation at the transmitter side. In maximizing the ergodic achievable sum rate per group (EASRPG), the Munkres user assignment algorithm (MUAA) efficiently finds the optimal solution for the problem but some user groups of the optimal solution severely degrade the EASRPG due to excessive inter-user interference (IUI) in the multiuser statistical eigen-mode transmission (MU-SET) mode. To overcome this, MUAA with mode switching (MUAA-MS) is proposed to build partial optimal paired groups with the MU-SET mode while the other unpaired users perform the single-user SET mode. Results show a higher EASRPG for MUAA-MS.
Keywords :
MIMO communication; eigenvalues and eigenfunctions; interference (signal); multi-access systems; radio transmitters; statistical analysis; EASRPG; IUI; MU-MIMO downlink system; MU-SET mode; MUAA; Munkres user assignment algorithm; ergodic achievable sum rate per group; inter-user interference; multiuser multiple-input multiple-output system; multiuser statistical eigen-mode transmission; transmitter; user assignment algorithms;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Wireless Communications & Signal Processing (WCSP), 2013 International Conference on
Conference_Location :
Hangzhou
Type :
conf
DOI :
10.1109/WCSP.2013.6677157
Filename :
6677157
Link To Document :
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