91. The probability of error of DPSK is . . . . . . . . than that of BPSK.
92. The peak-to-peak input to an 8-bit PCM coder is 2 Volts. The signal power-to-quantization noise power ratio (in dB) for an input of 0.5cos(ωmt) is
93. Consider the signal x(t) shown in the figure. Let h(t) denote the impulse response of the filter matched to x (t), with h(t) being non-zero only in the interval 0 to 4 sec. The slope of h(t) in the interval 3 < t < 4 sec is
94. The spectrum of BFSK may be viewed as the sum of
95. Consider an analog signal sampled at a rate of 2 KHz and quantized into 128 levels. The time duration for each bit of the binary encoded
signal is:
96. Signal to noise ratio is highest in:
97. A 6 MHz channel is used by digital signaling system utilizing four-level signals. The maximum possible transmission rate is
98. A group of N stations shares a 56 kbps pure ALOHA channel. Each station outputs a 1000 bit frame on an average of once every 100 sec. What is the maximum value of N?
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