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| A New User Selection Algorithm for MIMO System with Block Diagonalization |
| LV Jing1,LUO Hanwen1,ZHANG Jing2 |
| (1. Deptartment of Electronic Engineering, Shanghai Jiaotong University, Shanghai 200240, China; 2. Deptartment of Electronic Information, Shanghai Normal University, Shanghai 200234, China) |
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Abstract A new lowcomplexity user selection algorithm was proposed for multipleinput multipleoutput (MIMO) system employing block diagonalization (BD) with othercell interference (OCI) suppression. The algorithm iteratively selects users through greedy search. In each user selection step, the user who contributes most to the cell capacity is added to the selected user set, and the number of activated users is adaptively adjusted to maximize the cell capacity. The simulation results show that the proposed algorithm can achieve about 99% of the cell capacity of the complete search at high SNRs, and at low SNRs the two come out almost the same.
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Received: 03 February 2009
Published: 26 February 2010
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