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題名 | 較高基帶高斯調變和弦式調變調頻信號在較低調變指數下的臨界邊限=On Higher Baseband Gaussian & Sinsodial Modulated Frequency Modulation Signal Critical Threshold Under Lower Modulated Index |
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作者姓名(中文) | 饒達權; |
作者姓名(外文) | Rau, Dar-chyuan; |
書刊名 | 四海學報 |
卷期 | 10 1996.01[民85.01] |
頁次 | 頁94-108 |
分類號 | 448.53 |
語文 | chi |
關鍵詞 | 基帶高斯調變; 和弦式; 調變調頻信號; 調變指數; 臨界邊限; |
中文摘要 | 本文嘗試由[1]提出的釘波雜訊的指數函數的模型和其出現距離為馬克斯威分佈的釘波雜訊功率計算方式嘗試去推演在較高基帶高斯調變和弦式調變調頻信號在較低調變指數下輸出信號雜訊功率比的公式,進而藉著計算機輔助計算調頻化視頻信號的臨界邊限,以期對其臨界邊很能有較實際的詮譯。 |
英文摘要 | Satellite television channels often employ multiple subcarriers which, are usually located above the main audio subcarrier thus utilizing higher baseb and frequencies. At these frequencies conventional triangular function click model fail to describe the FM critical threshold effect accurately. In this paper, we try to use [1] proposing exponential function click model and the probability of coming out distance being Maxwell density distribution to derive the higher baseband no matter gaussian or sinsodial modulated frequency modulation signal under lower modulated index output signal to noise power ratio formulars. With aiding computer, we try to calculate frequency modulated video signal critical threshold under lower modulated index, looking forward to having reasonable and realizable result for our general use. |
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