衛星放送データチャンネルファクシミリの室内伝送実験

概要

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This paper describes the measurments and its results of transmission characteristics for 2 types of facsimile broadcasting system which use the data channel of the direct broadcasting satellite (DBS). The first system uses an analog facsimile signals. These signals multiplex on the data channel in PCM coded form. The second system uses a MH coded facsimile signals. These signals multiplex on the data channel in packet form. In the laboratory test, the transmission characteristics of these facsimile signals were measured using the experimental systems for DBS. In the first system, the margin of CN ratio is 0.3dB and the objective value of facsimile picture is 3 at CN ratio of 6 DB. In the second system, the margin of CN ratio is 1.7dB and the objecive value of the facsimile picture is 5 at CN ratio of 6 DB.
社団法人映像情報メディア学会の論文