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Determine the ergodic capacity of the channel when perfect state information is available at both sides.
Determine the optimal rotation that maximizes the coding gain.
Determine the optimal decision rule for this channel for Ricean fading when the state information is available at the receiver and when it is not available.
The outage probability of a diversity combiner is defined as the percentage of time the instantaneous output SNR of the combiner is below some prescribed level.
Calculate the autocorrelation function of the sequence {h(m)} denoted by Rh(m).
Determine an upper (union) bound of the code word error probability for AWGN and soft-decision decoding.
Determine the value of a that maximizes the required eb/N0 (worst-case pulse jamming) and the resulting maximum value of eb/N0
etermine the value of a that maximizes the required eb/N0 (worst-case partial band jamming) and the resulting maximum value of eb/N0.
The scattering function S(t ; ?) for a fading multipath channel is nonzero for the range of values 0 = t = 1 ms and -0.1 Hz = ? = 0.1 Hz.
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.