ECE :: Communication Systems
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Consider the following statements as regards DPSK and DEPSK
- DPSK demodulator requires a device which operates at carrier frequency and provides a delay of bit time Tb
- In DPSK, synchronous demodulation recovers the signal b(t) and the decoding of b(t) to generate d(t) is done at base band
- In both DPSK and DEPSK errors always occur in pairs
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An audio frequency of 5 kHz is translated to a radio frequency carrier of frequency 1 MHz and transmitted it to space through an antenna. The required height of antenna is
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Pre-emphasis circuit is used
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In which frequency range is the noise figure in a transistor minimum
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In commercial FM Broadcasting, A radio station transmitting the signal at 98.3 MHz, it is
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An SSB-AM signal cannot be demodulated by
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Which of the following could be the equation for non-linear resistor shown in figure?
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The pre-emphasis circuit is used
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The modulation index of wideband FM signal is
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