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22. The J.222.1 standard for cable-modem based Internet access state that the minimum SNR should be 35dB, and the bandwi
Posted: Mon May 09, 2022 6:27 am
by answerhappygod
- 22 The J 222 1 Standard For Cable Modem Based Internet Access State That The Minimum Snr Should Be 35db And The Bandwi 1 (22.76 KiB) Viewed 19 times
22. The J.222.1 standard for cable-modem based Internet access state that the minimum SNR should be 35dB, and the bandwidth of the coaxial cable is split into 8MHz bands. Upstream channels use QAM as the modulation method, with up to 128 symbols, and the maximum permitted symbol rate is 5120kBd. Show, using calculations, that the channel has sufficient capacity.