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Determine the error rate performance Pbh for a hard-decision decoder following the square-law-detected signals.
Explain whether or not the RAKE receiver can be implemented as a coherent receiver with maximal ratio combining.
What is the probability of error assuming that s(t) was transmitted? Express your answer as a function for the SNR E/N0.
A DS spread spectrum system is used to resolve the multipath signal components in a two-path radio signal propagation scenario.
Determine an upper (union) bound on the probability of a bit error based on the minimum distance of the concatenated code.
Determine the performance of this class of codes for DS spread spectrum signals with binary PSK modulation and either soft-decision or hard-decision decoding.
A rate ½ convolutional code with d free = 10 is used to encode a data sequence occurring at a rate of 1000 bits/s.
Determine the minimum chip rate to obtain a bit error probability of 10-5. Additive noise at the receiver may be ignored in this computation.
Determine the number of users if each user has equal power and the desired level of performance is an error probability of 10-6.
If the jammer is a pulse jammer, determine the pulse duty cycle that results in worstcase jamming and the corresponding probability of error.
What is the interference margin against a continuous-tone interference if the desired error probability is 10-5?
Determine the period of the sequence obtained by forming the modulo-2 sum of {c1i} and {c2i}.
Determine the interference margin if the required Eb/J0 = 10 and the jammer is a tone jammer with an average power Jav.
What is the processing gain? What is the probability of error in the presence of AWGN?
An FH binary orthogonal FSK system employs an m = 15 stage linear feedback shift register that generates a maximum-length sequence.
Compare the result in (a) with the error probability of an FH spread spectrum system that hops once per bit.
If the jammer operates as a partial-band jammer, what is the bandwidth occupancy for worst-case jamming?
The interference on the channel is AWGN. The FSK demodulator outputs are square-law-detected and passed to the decoder, which performs optimum soft-decision.
Determine the error probability for an FH spread spectrum signal in which a binary convolutional code is used in combination with binary FSK.
Determine the condition for the convergence of the mean value of CN (n).
Determine the range of values of ? that provides an over damped system for the adjustment process.
Determine the lattice filter and its optimum reflection coefficients corresponding to the linear predictor in Problem
Determine the optimum coefficients of the adaptive transversal (FIR) filter B(z) = b0 + b1z-1 that minimize the mean square error.
Assess the cost of the cyclic prefix (used in multicarrier modulation to avoid ISI) in terms .
What is the relationship between X(0) and X'(0)? If we plot |X(k)| and |X'(k)| on the same graph, explain the relationships between the two graphs.