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English:Experimental Evaluation of Intersymbol Interference in Non-Far Region Transmission using a Large Array Antenna in the Millimeter-Wave Band 
Japanese: RUCKKWAENTuchjuta, 戸村崇, 荒木純道, 廣川二郎, 安藤真.  
English: Tuchjuta Ruckkwaen, Takashi Tomura, Kiyomichi Araki, Jiro Hirokawa, Makoto Ando.  
Language English 
Journal/Book name
English:IEICE Transactions on Communications 
Volume, Number, Page Vol. E103-B    No. 10    pp. 1136-1146
Published date Oct. 1, 2020 
Japanese:一般社団法人 電子情報通信学会 
English:Institute of Electronics, Information and Communication Engineers 
Conference name
Conference site
DOI https://doi.org/10.1587/transcom.2019EBP3099
Abstract Intersymbol interference (ISI) is a significant source of degradation in many digital communication systems including our proposed non-far region communication system using large array antennas in the millimeter-wave band in which the main cause of ISI can be attributed to the path delay differences among the elements of an array antenna. This paper proposes a quantitative method to evaluate the ISI estimated from the measured near-field distribution of the array antenna. The influence of the uniformity in the aperture field distribution in ISI is discussed and compared with an ideally uniform excitation. The reliability of the proposed method is verified through a comparison with another method based on direct measurements of the transmission between the actual antennas. Finally, the signal to noise plus interference is evaluated based on the estimated ISI results and ISI is shown to be the dominant cause of the degradation in the reception zone of the system.

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