Multimode random beamforming for multiuser downlink MIMO system with limited feedback

Hyukjin Chae; Yohan Kim; Jang Hoon Yang; Bin Chul Ihm; Dong Ku Kim

doi:10.1109/VETECS.2008.182

Multimode random beamforming for multiuser downlink MIMO system with limited feedback

Hyukjin Chae, Yohan Kim, Jang Hoon Yang, Bin Chul Ihm, Dong Ku Kim

Department of Electrical and Electronic Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

3 Citations (Scopus)

Abstract

Multimode transmission has been studied to improve BER and outage capacity in the point-to-point system. In this paper, we consider the multimode transmission for downlink MIMO based on random beamforming(RBF) with limited feedback. We propose four heuristic mode selection and feedback policies to improve the sum rate and outage performance of downlink RBF system based on two approaches: distributed and centralized. Simulation results show that the centralized mode selection scheme with reasonable feedback amount provides waterfilling effect as well as the multiuser diversity gain, leading to the performance improvement of RBF in terms of sum rate and outage probability.

Original language	English
Title of host publication	2008 IEEE 67th Vehicular Technology Conference-Spring, VTC
Pages	837-841
Number of pages	5
DOIs	https://doi.org/10.1109/VETECS.2008.182
Publication status	Published - 2008 Jul 28
Event	2008 IEEE 67th Vehicular Technology Conference-Spring, VTC - Marina Bay, Singapore Duration: 2008 May 11 → 2008 May 14

Other

Other	2008 IEEE 67th Vehicular Technology Conference-Spring, VTC
Country	Singapore
City	Marina Bay
Period	08/5/11 → 08/5/14

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All Science Journal Classification (ASJC) codes

Computer Science Applications
Applied Mathematics
Electrical and Electronic Engineering

Cite this

Chae, H., Kim, Y., Yang, J. H., Ihm, B. C., & Kim, D. K. (2008). Multimode random beamforming for multiuser downlink MIMO system with limited feedback. In 2008 IEEE 67th Vehicular Technology Conference-Spring, VTC (pp. 837-841). [4525738] https://doi.org/10.1109/VETECS.2008.182

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abstract = "Multimode transmission has been studied to improve BER and outage capacity in the point-to-point system. In this paper, we consider the multimode transmission for downlink MIMO based on random beamforming(RBF) with limited feedback. We propose four heuristic mode selection and feedback policies to improve the sum rate and outage performance of downlink RBF system based on two approaches: distributed and centralized. Simulation results show that the centralized mode selection scheme with reasonable feedback amount provides waterfilling effect as well as the multiuser diversity gain, leading to the performance improvement of RBF in terms of sum rate and outage probability.",

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N2 - Multimode transmission has been studied to improve BER and outage capacity in the point-to-point system. In this paper, we consider the multimode transmission for downlink MIMO based on random beamforming(RBF) with limited feedback. We propose four heuristic mode selection and feedback policies to improve the sum rate and outage performance of downlink RBF system based on two approaches: distributed and centralized. Simulation results show that the centralized mode selection scheme with reasonable feedback amount provides waterfilling effect as well as the multiuser diversity gain, leading to the performance improvement of RBF in terms of sum rate and outage probability.

AB - Multimode transmission has been studied to improve BER and outage capacity in the point-to-point system. In this paper, we consider the multimode transmission for downlink MIMO based on random beamforming(RBF) with limited feedback. We propose four heuristic mode selection and feedback policies to improve the sum rate and outage performance of downlink RBF system based on two approaches: distributed and centralized. Simulation results show that the centralized mode selection scheme with reasonable feedback amount provides waterfilling effect as well as the multiuser diversity gain, leading to the performance improvement of RBF in terms of sum rate and outage probability.

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Access to Document

10.1109/VETECS.2008.182