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User-Selection Algorithms for Multiuser Precoding
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DOI：10.1109/TVT.2010.2052293.png)
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摘要
En 中文
A general framework for user selection in the broadcast channel with multiuser linear and nonlinear precoding techniques is investigated. Assuming full knowledge of channel-state information at the transmitter and using a minimum-mean-square-error (MMSE) criterion, we propose several user-selection algorithms based on the conventional incremental and decremental search approaches. Furthermore, a novel iterative user selection approach is introduced, offering a flexible performance-complexity tradeoff. New user grouping algorithms are also developed for orthogonal frequency-division multiple-access systems. Simulation results show that the proposed methods outperform well-known algorithms, which select users based on the users' orthogonality or sum rate bound.
Keyword:
Broadcast channel
multiuser (MU) precoding
orthogonal frequency-division multiple access (OFDMA)
Tomlinson-Harashima (TH) precoding
user selection
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7.1
论文数:
1.8W
被引数:
6.6W
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