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in the bch code designed in problem 756 the received sequence is r 0000000000000000000011001001001using the
design a 6 2 cyclic code by choosing the shortest possible generator polynomiala determine the generator matrix g in
the polynomial gx x 1 over the binary field is considereda show that this polynomial can generate a cyclic code for
draw the state diagram for the convolutional code generated by the encoder shown in figure p819 and thus determine
in the convolutional code generated by the encoder shown in figure p861 find the transfer function of the code in the
a rate 12 k 3 binary convolutional encoder is shown in figure p881 draw the tree diagram the trellis diagram and the
a k 1 k 3 and n 2 convolutional code is characterized by g1 001 and g2 1011 draw the state diagram for the
the block diagram for a convolutional code is given in figure p8101 draw the state transition diagram for this code2 is
a voice-band telephone channel passes the frequencies in the band from 300 to 3300 hz it is desired to design a modem
figure p97 illustrates a block diagram of a qam or psk modulator and demodulator modem in which the modulated signals
an ideal voice-band telephone line channel has a band-pass frequency-response characteristic spanning the frequency
determine the bit rate that can be transmitted through a 4-khz voice-band telephone bandpass channel if the following
determine the probability of error for binary orthogonal signaling with lth-order diversity over a rayleigh fading
repeat problem 1219 when fast frequency hopping is performed with l hops per coded bit and the decoder is a
a multipath fading channel has a multipath spread of tm 1 s and a doppler spread bd 001 hz the total channel
repeat problem 1223 for the worst-case partial-band interference channelproblem 1223the tats signal described in
the parity polynomials for constructing gold code sequences of length n 7 aregenerate all the gold codes of length 7
the scattering function stau lambda for a fading multipath channel is nonzero for the range of values 0 le tau le 1 ms
repeat problem 1219 for hard-decision viterbi decodingproblem 1219determine the error probability for an fh spread
a fading channel model that is flat in both time and frequency can be modeled as y rx n where the fading factor r
consider the channel model shown in figure 142-1 assume that the top channel is a noiseless bsc channel for which
a ds spread spectrum system is used to resolve the multipath signal components in a two-path radio signal propagation
consider the channel model shown in figure 142-1 and assume both channel components are bsc channels with crossover
consider a deterministic miso channel with awgn in which the elements of the channel vector h satisfy the conditions
the outage probability of a diversity combiner is defined as the percentage of time the instantaneous output snr of the