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1 The cable for a 400 km repeater system has a 05 dBkm Find the minimum number of equal length repeater sections needed to get

1 The cable for a 400 km repeater system has a 05 dBkm Find the minimum number of equal length repeater sections needed to get

1. The cable for a 400 km repeater system has a = 0.5 dB/km. Find the minimum number of equal-length repeater sections needed to get (S/N)D 30 dB if ST/N0W = 80 dB.

2. If all other parameters of a cable transmission system are fixed, show that the number of equal-length repeater sections that maximizes (S/N)D is m = 0.23L dB.

 

rahul 30-Jul-2020

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