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An 1 MHz channel is divided into 52 sub channels of 300 kHz wide using OFDM. The system uses 48 subcarriers for data traffic and 4 channels for error correction and control. The basic symbol rate per subcarrier is 125 kS/s. Determine the following:
a. The overall bit rate with one 20 MHz...
A signal has a bit rate of 20 kb/s. Find the baud rate if the signal is transmitted using:
a. FSK with two frequencies
b. QPSK with four phase angles
c. QAM with four phase angles and four amplitudes
A direct-sequence spread-spectrum system uses FSK with a chipping rate of 20 to 1. The signal-to-noise ratio for the spread signal is −5 dB (that is, the signal is 5 dB weaker than the noise in the same bandwidth). If the data is transmitted at 50 kb/s, calculate:
a. The chipping rate
b. The...
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