広帯域伝送における受信レベル変動諸特性 : 無線・光伝送

概要

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This paper clarifies received level characteristics of wide band transmission such as a TV channel by computer simulation. The results are as follows: i) Received level in wide band is not a deep depth, and has a no-Raylegh distribution. ii) Received level depth decreases with increasing number of arriving waves. iii) Envelope autocorrelation is almost independent of receiving band width. Therefore, using Yagi-receiving-antenna, a high received level can be detected by moving the antenna in a few wavelengths. iv) Frequency-envelope correlation is higher in the receiving wide band. In a TV channel with a 6MHz adjacent channel, however, the adjacent channel is not guaranteed a high level even if the present receiving level is high because of the large 6MHz separation.
社団法人映像情報メディア学会の論文
1990-09-27