BWN = Whigher -Wlower
          = (wc + wm) - (wc- wm)

BWN = 2 wm (in rads)

BWN = 2 fm (in Hz)

Example. A BPSK modulator with a carrier frequency of 70 MHz and an input bit rate of 10 Mbps. Determine:
a) the maximum and minimum upper and lower side frequencies,
b) the minimum Nyquist Bandwidth
c) Baud

(65MHz,75MHz, 10 MHz, 10 Megabaud)

BPSK RECEIVER

Coherent Carrier Recovery - Detects and regenerates the carrier

Balanced Modulator - product detector

LPF - separates the recovery binary data from the complex demodulated signal.

• At the output of the Balanced Modulator: (with sinwct = logic 1 as input)

                    E(t) = (sinwct) (sinwct)
                           = sin2wct

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