A band-pass signal has significant frequency components in the range of 1.5 MHZ to 2 MHZ. If the signal is to be reconstructed from its samples, the minimum sampling frequency will be.
Which of the following pulse coding will take minimum transmission bandwidth per bit?
In binary PSK modulation, the input signal is given by.
Which of the following modulation scheme is the most bandwidth efficient scheme?
In QPSK, the phase reversals occurs at
The DPSK system employs EX-NOR gate followed by BPSK modulator. BPSK modulator assign phase 0 for bit 1 and phase for bit 0. Find the phase for output signal if transmitted sequence is 110110 of DPSK modulator. Assuming that arbitrary bit is 0.
The bandwidth efficiency of 16-ary PSK using ideal Nyquist pulses is …………..bps/Hz
Three signal having maximum frequency components, 5KHz, 5KHz and 10KHz sampled at their Nyquist rate and time division multiplexed. Find the bit duration if number of bits used in encoder are 8.
A TDM system is to be designed to multiplex the following two signals
X1= 5 Cos(2000t)
X2= 2 Cos (2000t) Cos(3000t)
The minimum sampling rate is
Consider a signal m(t) = 5Cos(10×103t) + 5Cos(6×103t). The minimum sampling frequency is ……KHz
Signal x(t) = At what sampling frequency should the signal be sampled to avoid aliasing?
A bandwidth of 10 KHz is required for AM system. If the lowest frequency component in the modulated signal is 555 KHz. Carrier frequency in KHz is
Determine the band width occupied by a sinusoidal frequency modulated carrier for which the modulation index is 2.4.
A communication channel with AWGN operating at a signal to noise ratio SNR>>1 and bandwidth B has capacity C1 if the SNR is doubled keeping B constant , the resulting capacity C2 is given by
In a digital communication system the binary symbols 1 and 0 transmitted with equal probability. The pdf for binary symbol 1 and 0 are as shown in the figure.
The minimum decision error probability is:
