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a speech signal is sampled at a rate of 8 khz and then encoded using 8 bits per sample the resulting binary data are
determine the number of terminal phase states in the state trellis diagram for1 a full-response binary cpfsk with h 23
consider the signal1 determine the impulse response of the matched filter for the signal2 determine the output of the
the two equivalent lowpass signals shown in figure p410 are used to transmit a binary information sequence the
determine the autocorrelation functions for the msk and offset qpsk modulated signals based on the assumption that the
a continuous-phase fsk signal with h frac12 is represented aswhere the plusmn signs depend on the information bits
when the additive noise at the input to the demodulator is colored the filter matched to the signal no longer maximizes
in on-off keying of a carrier modulated signal the two possible signals are where phi is the carrier phase and nt is
a radio communication system transmits at a power level of 01 w at 1 ghz the transmitting and receiving antennas are
a satellite in synchronous orbit is used to communicate with an earth station at a distance of 40000 km the satellite
consider a linear block code with code words 0000 1010 0101 1111 find the dual of this code and show that this code is
find the generator and the parity check matrices of a second-order r 2 reed-muller code with block length n 16 show
c is a 6 3 linear block code whose generator matrix is given by1 what rate minimum distance and the coding gain can c
a 6 3 systematic linear block code encodes the information sequence x x1 x2 x3 into codeword c c1 c2 c3 c4 c5 c6 such
the polynomialgx x4 x 1is the generator for the 15 11 hamming binary codea determine a generator matrix g for this
use the transfer function derived in problem 88 for the rc 12 k 3 convolutional code to compute the probability of a
draw the state diagram for the convolutional code generated by the encoder shown in figure p819 and thus determine
a trellis-coded signal is formed as shown in figure p820 by encoding 1 bit by use of a rate 12 convolutional code while
the block diagram for a convolutional encoder is shown in figure p8121 what is the number of states for this code2
a k 1 k 3 and n 2 convolutional code is characterized by g1 001 and g2 1011 draw the state diagram for the
consider the transmission of data via pam over a voice-band telephone channel that has a bandwidth of 3000 hz show how
a microwave radio channel has a frequency responsec f 1 03 cos 2pi f tdetermine the frequency-response
in a binary pam system the clock that specifies the sampling of the correlator output is offset from the optimum
in line-of-sight microwave radio transmission the signal arrives at the receiver via two propagation paths the direct
a pulse and its raised cosine spectral characteristic are shown in figure p953 this pulse is used for transmitting