Question: A cable modem uses 5 1 2 - QAM modulation mode with Baud ( symbol ) rate 8 kHz and carrier frequency 1 2 kHz

A cable modem uses 512-QAM modulation mode with Baud (symbol) rate 8 kHz and carrier frequency 12 kHz.(a) Determine the bit rate of the modem. (b) Determine the frequency band utilized by the modem. (c) If the carrier frequency needs to be increased further to 25 kHz by a frequency converter (mixer + local oscillator), what are the possible frequency(s) of the local oscillator? Explain your answer in detail.

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