Scheduling algorithm with power Allocation for random unitary beamforming

Yuki Tsuchiya; Tomoaki Ohtsuki; Toshinobu Kaneko

doi:10.1109/VETECS.2007.347

Scheduling algorithm with power Allocation for random unitary beamforming

Yuki Tsuchiya, Tomoaki Ohtsuki, Toshinobu Kaneko

Department of Information and Computer Science

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

1 Citation (Scopus)

Abstract

Random unitary beamforming is one of the schemes reducing the amount of feedback information in multiuser diversity techniques with multiple-antenna downlink transmission. In Multiple-Input Multiple-Output (MIMO) systems, throughput performance is greatly improved using AMC (Adaptive Modulation and Coding). Throughput performance is also improved by allocating power among streams appropriately. In random unitary beamforming, transmitter has only partial channel state information (CSI) of each receiver. Thus, it is difficult for random unitary beamforming to use conventional power allocation methods that use full CSI at all the receivers. In this paper, we propose a new scheduling algorithm with power allocation for downlink random unitary beamforming that improves throughput performance without full CSI. We provide numerical results of the proposed scheduling algorithm and compare them to those of the conventional random unitary beamforming scheduling algorithm.

Original language	English
Title of host publication	2007 IEEE 65th Vehicular Technology Conference - VTC2007-Spring
Pages	1668-1672
Number of pages	5
DOIs	https://doi.org/10.1109/VETECS.2007.347
Publication status	Published - 2007 Aug 2
Event	2007 IEEE 65th Vehicular Technology Conference - VTC2007-Spring - Dublin, Ireland Duration: 2007 Apr 22 → 2007 Apr 25

Publication series

Name	IEEE Vehicular Technology Conference
ISSN (Print)	1550-2252

Other

Other	2007 IEEE 65th Vehicular Technology Conference - VTC2007-Spring
Country/Territory	Ireland
City	Dublin
Period	07/4/22 → 07/4/25

ASJC Scopus subject areas

Computer Science Applications
Electrical and Electronic Engineering
Applied Mathematics

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10.1109/VETECS.2007.347

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Tsuchiya, Y, Ohtsuki, T & Kaneko, T 2007, Scheduling algorithm with power Allocation for random unitary beamforming. in 2007 IEEE 65th Vehicular Technology Conference - VTC2007-Spring., 4212775, IEEE Vehicular Technology Conference, pp. 1668-1672, 2007 IEEE 65th Vehicular Technology Conference - VTC2007-Spring, Dublin, Ireland, 07/4/22. https://doi.org/10.1109/VETECS.2007.347

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title = "Scheduling algorithm with power Allocation for random unitary beamforming",

abstract = "Random unitary beamforming is one of the schemes reducing the amount of feedback information in multiuser diversity techniques with multiple-antenna downlink transmission. In Multiple-Input Multiple-Output (MIMO) systems, throughput performance is greatly improved using AMC (Adaptive Modulation and Coding). Throughput performance is also improved by allocating power among streams appropriately. In random unitary beamforming, transmitter has only partial channel state information (CSI) of each receiver. Thus, it is difficult for random unitary beamforming to use conventional power allocation methods that use full CSI at all the receivers. In this paper, we propose a new scheduling algorithm with power allocation for downlink random unitary beamforming that improves throughput performance without full CSI. We provide numerical results of the proposed scheduling algorithm and compare them to those of the conventional random unitary beamforming scheduling algorithm.",

author = "Yuki Tsuchiya and Tomoaki Ohtsuki and Toshinobu Kaneko",

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T1 - Scheduling algorithm with power Allocation for random unitary beamforming

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AU - Ohtsuki, Tomoaki

AU - Kaneko, Toshinobu

PY - 2007/8/2

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N2 - Random unitary beamforming is one of the schemes reducing the amount of feedback information in multiuser diversity techniques with multiple-antenna downlink transmission. In Multiple-Input Multiple-Output (MIMO) systems, throughput performance is greatly improved using AMC (Adaptive Modulation and Coding). Throughput performance is also improved by allocating power among streams appropriately. In random unitary beamforming, transmitter has only partial channel state information (CSI) of each receiver. Thus, it is difficult for random unitary beamforming to use conventional power allocation methods that use full CSI at all the receivers. In this paper, we propose a new scheduling algorithm with power allocation for downlink random unitary beamforming that improves throughput performance without full CSI. We provide numerical results of the proposed scheduling algorithm and compare them to those of the conventional random unitary beamforming scheduling algorithm.

AB - Random unitary beamforming is one of the schemes reducing the amount of feedback information in multiuser diversity techniques with multiple-antenna downlink transmission. In Multiple-Input Multiple-Output (MIMO) systems, throughput performance is greatly improved using AMC (Adaptive Modulation and Coding). Throughput performance is also improved by allocating power among streams appropriately. In random unitary beamforming, transmitter has only partial channel state information (CSI) of each receiver. Thus, it is difficult for random unitary beamforming to use conventional power allocation methods that use full CSI at all the receivers. In this paper, we propose a new scheduling algorithm with power allocation for downlink random unitary beamforming that improves throughput performance without full CSI. We provide numerical results of the proposed scheduling algorithm and compare them to those of the conventional random unitary beamforming scheduling algorithm.

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Scheduling algorithm with power Allocation for random unitary beamforming

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