The power levels at SU are obtained by maximizing the average achievable rate under the constraints of the average transmit power at SU and the average interference temperature to PU.
With no flanking sequence constraints on average 81% of the SNPs had call rate ≥ 0.95 and 88% a GC50 score ≥ 0.40.
Under the constraints of the average transmit power at SU and the average interference temperature to PU, the sensing duration, energy threshold, and power levels are optimized to maximize the average achievable rate at SU. Consider a CR network with a pair of primary and secondary transceivers as depicted in Figure 1.
Under non-energy constraints, the comparisons of average busy period, average idle period, average overhead, and average preemption are in Figs. 1, 2, 3, and 4, respectively.
Under energy constraints, the comparisons of average busy period, average idle period, average overhead, average energy level, average preemption, and average battery switch mode are in Figs. 5, 6, 7, 8, 9, and 10, respectively.
Although the CRB is very effective for approximate periodicity, which occurs commonly in practise, the simulation constraint of an average period of 10 bp is artificial and probably overstates the practical utility of the measure somewhat.
The sample within the range must satisfy the constraints of the weighted average.
The user can also indicate the performance constraints under the form of average, minimum and maximum data rate.
As power allocation in AF system critically depends on the SNR and power constraints of relays, accurate estimation of average SNR, which is sensitive to hop count and individual hop distributions, is essential for the effective implementation of the system.
The assumption of average power constraint is the same as that used in [10].
