Measurement of Hot-Spot Zones for Design of Wide-Band Systems at 70-GHz(<Special Section>Wide Band Systems)

概要

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The 70-GHz band propagation characteristics of two different hot-spot zones are measured and analyzed: (1) a transmitter fixed to a ceiling servicing the area beneath it (type A), and (2) a transmitter fixed to a wall servicing the area in front of it (type B). Measurements were made in two different settings, a lobby and a train. The results show that zone B produces a smaller delay spread in relation to distance. A comparison of the use of vertical and circular polarization shows that circular polarization produces a smaller delay spread in the type B zone. The results also indicated that the function of the delay spread value for the distance in a lobby and train in type B zone.
社団法人電子情報通信学会の論文
2004-10-01