Random beamforming using low feedback and low latency power allocation

Yuki Tsuchiyat, Tomoaki Ohtsuki, Toshinobu Kaneko

研究成果: Conference contribution

抜粋

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 because of reducing the amount of feedback information. Thus, the power allocation scheme needs to work with only partial CSI and low latency. In this paper, we propose a new power allocation scheme for random unitary beamforming assuming a discrete transmission rate with a small amount of feedback information and low latency. Simulation results show that the proposed scheme can improve throughput compared to conventional power allocation scheme.

元の言語English
ホスト出版物のタイトル2007 IEEE 66th Vehicular Technology Conference, VTC 2007-Fall
ページ402-406
ページ数5
DOI
出版物ステータスPublished - 2007 12 1
イベント2007 IEEE 66th Vehicular Technology Conference, VTC 2007-Fall - Baltimore, MD, United States
継続期間: 2007 9 302007 10 3

出版物シリーズ

名前IEEE Vehicular Technology Conference
ISSN(印刷物)1550-2252

Other

Other2007 IEEE 66th Vehicular Technology Conference, VTC 2007-Fall
United States
Baltimore, MD
期間07/9/3007/10/3

ASJC Scopus subject areas

  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Applied Mathematics

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  • これを引用

    Tsuchiyat, Y., Ohtsuki, T., & Kaneko, T. (2007). Random beamforming using low feedback and low latency power allocation. : 2007 IEEE 66th Vehicular Technology Conference, VTC 2007-Fall (pp. 402-406). [4349745] (IEEE Vehicular Technology Conference). https://doi.org/10.1109/VETECF.2007.96