2009年5月
Performance of Pre-FFT Type MMSE Adaptive Array Antenna with Iterative Weight Update in Presence of Sporadic Intra-System Interference
IEICE TRANSACTIONS ON COMMUNICATIONS
- ,
- ,
- 巻
- E92B
- 号
- 5
- 開始ページ
- 1852
- 終了ページ
- 1859
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1587/transcom.E92.B.1852
- 出版者・発行元
- IEICE-INST ELECTRONICS INFORMATION COMMUNICATIONS ENG
This paper introduces our proposed pre-FFT type MMSE-AAA for an OFDM packet transmission system to suppress sporadic interference. The AAA scheme controls an antenna weight to minimize the mean square error between its output signals of two periods with identical transmitted waveform and iterates the weight updating process in an OFDM[ symbol to rapidly converge the weight. The average PER performance of the proposed AAA with the presence of a sporadic inter-system/intra-system interference signal is evaluated through computer simulations that assume an exponentially decaying 12-path LOS fading channel and IEEE 802.11a data frame transmission. Simulation results show that the proposed AAA can effectively suppress sporadic inter-system interference that is irrelevant to its arrival timing. Sporadic intra-system interference can also be suppressed by the proposed AAA more efficiently than inter-system interference as long as the interference arrives between 13% and 90% of the OFDM symbol duration after the beginning of an OFDM symbol of the desired signal.
- リンク情報
- ID情報
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- DOI : 10.1587/transcom.E92.B.1852
- ISSN : 0916-8516
- eISSN : 1745-1345
- CiNii Articles ID : 10026838401
- Web of Science ID : WOS:000266425400050