Software Radio-Based Distributed Multi-User MIMO Testbed: Towards Green Wireless Communications

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概要

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• The present paper introduces a prototype design and experimental results for a multi-user MIMO linear precoding system. A base station and two mobile stations are implemented by taking full advantage of the software-defined radio. The base station consists of general purpose signal analyzers and signal generators controlled by a personal computer. Universal software radio peripherals are used as mobile stations. Linear spatial precoding and a simple two-way channel estimation technique are adopted in this experimental system. In-lab and field transmission experiments are carried out, and the bit error rate performance is evaluated. The impact of the channel estimation error under average channel gain discrepancy between two mobile stations is analyzed through computer simulations. Channel estimation error is shown to have a greater influence on the mobile station with the greater average channel gain.

著者

• Umehara Daisuke

  Graduate School Of Informatics Kyoto University

• Denno Satoshi

  Graduate School Of Informatics Kyoto University

• Morikura Masahiro

  Graduate School Of Informatics Kyoto University

• Murata Hidekazu

  Graduate School Of Informatics Kyoto University

• Yoshida Susumu

  Graduate School Of Informatics Eyoto University

• YAMAMOTO Koji

  Graduate School of Engineering, Osaka University

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