On the joint design of beamforming and user scheduling in multi-cell MIMO uplink networks

Due to the difficulty of coordination in cellular uplink networks, it is a practical challenge to achieve better throuhgput with a distributed scheduling. Futhermore, multiple antennas at mobile stations (MSs) can be utilized for reducing interference or for improving the desired signal strength. In...

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Bibliographic Details
Main Authors: Bang Chul Jung, Su Min Kim, Hyun Jong Yang, Won-Yong Shin
Format: Conference Proceeding
Language:English
Subjects:
Antennas
Array signal processing
beamforming
Interference
MIMO
MIMO interfering multiple access channel
Multiuser detection
multiuser diversity
Signal to noise ratio
Uplink
user scheduling
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Summary:Due to the difficulty of coordination in cellular uplink networks, it is a practical challenge to achieve better throuhgput with a distributed scheduling. Futhermore, multiple antennas at mobile stations (MSs) can be utilized for reducing interference or for improving the desired signal strength. In this paper, we investigate a joint design of beamforming and user scheduling for multi-cell multiple input multiple output (MIMO) uplink networks. In the proposed scheme, each BS with M antennas adopts M random beamforming techniques and each MS with L antennas utilizes a single beamforming vector which minimizes the sum power of generating interferences to home cell as well as other cells. In each cell, then, the BS selects M MSs such that both sufficiently large desired signal power and sufficiently small generating interference are guaranteed. Numerical results show that the proposed scheme outperforms the existing distributed schemes in terms of sum-rate in practical environments.
ISSN:2166-9570
DOI:10.1109/PIMRC.2014.7136203