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1 based on the maximum-likelihood principle develop and sketch a phase synchronization procedure for a binary ook
a given digital communication system for a passband dual polarization channel uses four-dimensional modulation
with data treated as a random nuisance parameter derive the likelihood function for the phase of a binary fsk waveform
the maximum-likelihood estimator developed in problem 86 can be used bit by bit to estimate the phase on every received
a with data treated as a random nuisance parameter develop a maximumlikelihood procedure for finding a marker
in a partially-coherent channel the phase angle is not known but it changes so slowly with respect to the bit rate that
1 construct a list of all complementary codes of block length 4 how many pairs are there on the list show that
the modified duobinary partial-response signaling waveform has the generator polynomial gx 1 - x2a find the impulse
partial-response signaling can also be used when the input to the channel takes more than two amplitudesa describe a
a partial-response waveform can be designed by using any nyquist pulse in place of the sinc pulsea what is the
a by examining the trellis for duobinary partial-response signaling show that there are some paths that have an
a a hamming 7 4 code is used to correct errors on a binary symmetric channel with error probability what is the
let n 2r-1 and consider a binary word of block length n how many binary words are there that differ from the given
a systematic generator matrix for a 21 convolutional code is given bya what is the free hamming distance of this
a diversity communication system uses two diversity channels and binary fsk signaling the two channels have identical
give an ad hoc estimator for the amplitude of a coherent binary fsk waveform in additive gaussian noise when it is
a is the performance of an optimal coherent demodulator for m-ary orthogonal signaling affected by amplitude variations
when the bandwidth of a channel is too small compared to the input symbol rate intersymbol interference occurs the case
consider a person standing in a room that is at a temperature of 21 degc determine the total heat rate from this person
voting systems and communication diversity a large group of voters is to decide between two candidates each voter is to
1 discuss the modes of heat transfer that determine the equilibrium temperature of a space shuttle when it is in orbit
a square chip of size 8 mm is mounted on a substrate with the top surface being exposed to a coolant flow at 20degc all
a thin metal plate has one large insulated surface and another large surface exposed to solar radiation at a rate of
a long thin copper wire of radius r and length l has an electrical resistance of rho per unit length the wire is