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Hokkaido University Collection of Scholarly and Academic Papers >
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Channel Characteristics and Performance of MIMO E-SDM Systems in an Indoor Time-Varying Fading Environment
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| Title: | Channel Characteristics and Performance of MIMO E-SDM Systems in an Indoor Time-Varying Fading Environment |
| Authors: | Bui, Huu Phu Browse this author | | Nishimoto, Hiroshi Browse this author | | Ogawa, Yasutaka Browse this author | | Nishimura, Toshihiko Browse this author | | Ohgane, Takeo Browse this author |
| Issue Date: | 10-Apr-2010 |
| Publisher: | Hindawi Publishing |
| Journal Title: | EURASIP Journal on Wireless Communications and Networking |
| Volume: | 2010 |
| Start Page: | 736962 |
| Publisher DOI: | 10.1155/2010/736962 |
| Abstract: | Multiple-input multiple-output (MIMO) systems employ advanced signal processing techniques. However, the performance is affected by propagation environments and antenna characteristics. The main contributions of the paper are to investigate Doppler spectrum based on measured data in a typical meeting room and to evaluate the performance of MIMO systems based on an eigenbeam-space division multiplexing (E-SDM) technique in an indoor time-varying fading environment, which has various distributions of scatterers, line-of-sight wave existence, and mutual coupling effect among antennas. We confirm that due to the mutual coupling among antennas, patterns of antenna elements are changed and different from an omnidirectional one of a single antenna. Results based on the measured channel data in our measurement campaigns show that received power, channel autocorrelation, and Doppler spectrum are dependent not only on the direction of terminal motion but also on the antenna configuration. Even in the obstructed-line-of-sight environment, observed Doppler spectrum is quite different from the theoretical U-shaped Jakes one. In addition, it has been also shown that a channel change during the time interval between the transmit weight matrix determination and the actual data transmission can degrade the performance of MIMO E-SDM systems. |
| Rights: | http://creativecommons.org/licenses/by/3.0/ |
| Type: | article |
| URI: | http://hdl.handle.net/2115/43320 |
| Appears in Collections: | 情報科学院・情報科学研究院 (Graduate School of Information Science and Technology / Faculty of Information Science and Technology) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 西村 寿彦
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