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在光纖通信的系統(tǒng)中,光纖中,傳輸?shù)氖嵌M(jìn)制光脈沖“0”碼和“1”碼,它由二進(jìn)制數(shù)字信號(hào)對(duì)光源進(jìn)行通斷調(diào)制而產(chǎn)生。而數(shù)字信號(hào)是對(duì)連續(xù)變化的模擬信號(hào)進(jìn)行抽樣、量化和編碼產(chǎn)生的,稱為PCM(pulsecodemodulation),即脈沖編碼調(diào)制。PCM編碼原理與規(guī)則:PCM數(shù)字接口是G.7…
2024-6-18 17:03:32[未知IP0801]網(wǎng)友
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2024-6-18 12:33:15[未知IP0801]網(wǎng)友
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2024-6-18 8:03:17[未知IP0801]網(wǎng)友
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2024-6-17 14:01:32[未知IP0801]網(wǎng)友
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2024-5-26 2:44:42[未知IP0801]網(wǎng)友
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2024-5-25 22:14:07[未知IP0801]網(wǎng)友
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2024-5-2 11:15:24[未知IP0801]網(wǎng)友
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2024-5-2 2:15:36[未知IP0801]網(wǎng)友
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2024-5-1 21:45:52[未知IP0801]網(wǎng)友
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2024-5-1 10:55:28[未知IP0801]網(wǎng)友
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