Illustrative results show that, compared to the narrowband sensing, the wideband sensing approach offers a much better SU link rate and network sum capacity over the whole range of PU transmission activity factor and the resulting SU and sum rates increase monotonically with the number of sensed frequency slots while meeting stringent constraints on the guaranteed minimum PU rates.
While the PU link rate is within the permitted range (as shown in Figure 3), the results plotted in Figure 4 indicate that the constraint on guaranteed minimum PU rate largely decreases the achievable SU link rate in the narrow-band case (i.e., one frequency slot), as compared to the wideband sensing scheme (i.e., four or eight frequency slots).
Finally we show that frequencies of temporal differences in hydrocarbon abundance span a range from 24 to 3 or less hours, and use this to estimate minimum CH turnover rates per day.
Fig. 2 MUE sum rate against R min. Figure 3 plots the SUE sum rate against the required minimum MUE sum rate R min for different values of (P_{text {max}}^{p}).
Iterative optimization-based data traffic offloading schemes with SIC decoder available or not available at the SBS are proposed to maximize the SUE sum rate under the required minimum MUE sum rate constraint.
In the following results, we assume that all the channels involved follow Rayleigh fading with unit mean and set σ 2=1,T=1, M=10, and K=10. Figure 2 plots the MUE sum rate against the required minimum MUE sum rate R min for different values of (P_{text {max}}^{p}).
Figure 2b indicates that the optimal number of trees is approximately 330 for the forest with 330 trees, which has the minimum OOB error rate along with a constant error rate 0.16.
The optimal number of trees is the one having the minimum OOB error rate along with a nearly constant error rate.
The weighted sum of the PU and secondary user (SU) link rates is used as the objective function with constraint on the guaranteed minimum PU link rate.
where R p (τ 0,α,p p ) is the sum rate of the MUEs connected to the MBS, R ps(τ 0,β,p p ) is the sum rate of the MUEs offloaded to the SBS, and R min is the required minimum MUE sum rate.
