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the trellis diagram of a rate-12 constraint length-3 convolutional code is shown in figure the all-zero sequence is
the squared magnitude response of a linear channel denoted by h f 2 is shown in figure assume that the gap t 1 and the
the single-tone modulating signal m t am cos 2pamt is used to generate the vsb signal where a is a constant less than
the sample function of a gaussian process of zero mean and unit variance is uniformly sampled and then applied to a
the power spectral density of a random process x t is shown in figure it contains of a delta function at f 0 and a
the binary erasure channel has two inputs and three outputs as described in figure the inputs are labeled 0 and 1 and
the binary data stream 001101001 is applied to the input of a duobinary systema construct the duobinary coder output
suppose that nonlinear devices are available for which the output current i o and input voltage v i are related by i o
specify the nyquist rate and the nyquist interval for each of the following signalsa g t sinc 200tb g t sinc2 200tc g
consider a phase-locked loop consisting of a multiplier loop filter and voltage controlled oscillator vco let the
consider a pam wave transmitted through a channel with white gaussian noise and minimum bandwidth bt 12ts where ts is
consider a binary symmetric channel characterized by the transition probability p plot the mutual information of the
a random telegraph signal x t characterized by the autocorrelation function rx t exp -2v t where v is a constant is
a pcm system uses a uniform quantizer followed by a 7-bit binary encoder the hit rate of the system is equal to 50 x
a pam telemetry system involves the multiplexing of four input signals si t i 1 2 3 4 two of the signals s1 t and s2 t
a narrowband signal has a bandwidth of 10 khz centered on a carrier frequency of 100 khz it is proposed to represent
a convolutional encoder has a single-shift register with two stages ie constraint length k 3 three modulo-2 adders and
a binary pcm system using polar nrz signaling operates just above the error threshold with an average probability of
a plot the spectrum of a pam wave produced by the modulating signal m t am cos 2ipamt assuming a modulation frequency
figure shows the block diagram of a zero-crossing detector for demodulating an fm signal its consist of a limiter a
a a sinusoidal signal with amplitude of 325 volts is applied to a uniform quantizer of the mid-tread type whose output
write an essay on the replacement of metallic automobile components by polymers and composite materials address the
which of the following would you expect to be elastomers and which thermosetting polymers at room temperature justify
the unit cell for cr2o3 has hexagonal symmetry with lattice parameters a 04961 nm and c 1360 nm if the density of
the tensile strength and number-average molecular weight for two polyethylene materials are as followsestimate the