テレビジョン学会技術報告
Online ISSN : 2433-0914
Print ISSN : 0386-4227
デマンドアクセス光CATVシステム用16QAM受信機
中村 直義前田 幹夫小山田 公之
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研究報告書・技術報告書 フリー

1995 年 19 巻 4 号 p. 5-10

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To introduce digital video services into the demand-access optical CATV system, we evaluated three kinds of BS-IF band 16-QAM signal receivers for use in subscriber's digital tuners. The receivers tested are the straight receiving system, the heterodyne receiving system and the heterodyne receiving system with automatic frequency control. Experimental results showed that the bit-error-rate (BER) performance of the receiving 16-QAM signal was below 10^<-4> for all three receivers when the carrier-to-noise ratio (CNR) of the signal was over 20.0 dB. The frequency offset, about ±2MHz of the input signal, was allowed to attain the same BER performance.

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© 1995 一般社団法人映像情報メディア学会
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