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suppose that the loop filter see equation 52-14 for a pll has the transfer functiona determine the closed-loop transfer
a radio transmitter has a power output of pt 1 w at a frequency of 1 ghz the transmitting and receiving antennas are
using a symbolic computation program eg mathematica or maple find the weight enumeration polynomial for a 15 11 hamming
when an n k hadamard code is mapped into waveforms by means of binary psk the corresponding m 2k waveforms are
a code c consists of all binary sequences of length 6 and weight 31 is this code a linear block code why2 what is the
solve problem 757 when the received sequence isr 1110000000000000000011101101001problem 757in the bch code designed in
the parity check matrix of a linear block code is given below1 determine the generator matrix for this code in the
determine the generator polynomial and the rate of a triple-error-correcting reed-solomon code with block length n 63
a con volutional code is described by1 draw the encoder corresponding to this code2 draw the state-transition diagram
the convolutional code of problem 81 is used for transmission over an awgn channel with hard decision decoding the
repeat problem 81 for a code withproblem 81a con volutional code is described by1 draw the encoder corresponding to
the block diagram of a binary convolutional code is shown in figure p841 draw the state diagram for the code2 find the
we know that cyclic codes for all possible values of n k do not exist1 give an example of an n k pair for which no
what are the possible rates for cyclic codes with block length 23 list all possible generator polynomials and specify
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