Question: Consider a telephone modem operating at 2 8 . 8 kbits that uses trellis - coded QAM modulation. [ 2 0 POINTS ] a .

Consider a telephone modem operating at 28.8 kbits that uses trellis-coded QAM modulation. [20 POINTS] a. Calculate the bandwidth efficiency of such a modem, assuming that the usable channel bandwidth is 3429 Hz. b. Assuming AWGN and an available Eb/N0=10dB, calculate the theoretically available capacity in the 3429 Hz bandwidth. c. What is the required Eb/N0 that will enable a 3429 Hz bandwidth to have a capacity of 28.8 kbits/s?

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