Question: A twisted pair cable with loading coils has an attenuation of 0.2 dB per kilometer. How long can the link be if an attenuation of

A twisted pair cable with loading coils has an attenuation of

A twisted pair cable with loading coils has an attenuation of 0.2 dB per kilometer. How long can the link be if an attenuation of 20dB can be tolerated? Suppose a low-pass communication system has a 1MHz bandwidth. What bit rate is attainable using 8-level pulses (encoding 3-bit words)? Suppose we wish to transmit at a rate of 64Kbps over a 3KHz-telephone channel. What is the minimum SNR required to accomplish this? Why are wires twisted in twisted-pair copper cable

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