Báo cáo hóa học: "Research Article Decentralized Utility Maximization in Heterogeneous Multicell Scenarios with Interference Limited and Orthogonal Air Interfaces" pot

... pages doi:10.1155/2009/104548 Research Article Decentralized Utilit y Maximization in Heterogeneous Multicell Scenarios with Interference Limited and Orthogonal Air Interfaces Ingmar Blau, 1 Gerhard Wunder, 1 Ingo Karla, 2 and ... A orth. (5) 2.2. Interference Limited RATs. We assume that all users share the same bandwidth and that resources are distributed...

Ngày tải lên: 21/06/2014, 23:20

... optimisation. In particular, the performance gain achieved by both PB and IEA increases with a. This behaviour can be explained as follows. With increasing a, the interval in which the utility function ... points. In the case that all entries in λ ∗ are equal, all permutations π are optimal, resulting in K! points r wsr (λ ∗ , π). As a consequence, enumerating all K! points...

Ngày tải lên: 21/06/2014, 22:20

... policy follows waterfilling on channel SNR, that is, P  i increases with increasing ζ i ;andforζ i >ζ (o) i , the power allocation is according to inversion in the channel SNR, that is, increasing ζ i decreases ... off and the algorithm continues with the remaining sensors until the convergence criterion is fulfilled. Regarding the convergence properties of the algorithm, consider th...

Ngày tải lên: 21/06/2014, 17:20

... constraint (10) is binding at the optimum. Proof. The accommodation capacity y is an increasing function of p s and p r . However, in decode -and- forward cooperation, the capacity is not a strictly increasing ... of channel gains between three types of links formed in cooperative relaying as shown in Figure 1. In cooperative relaying through decode- and- forward, the achievable ra...

Ngày tải lên: 22/06/2014, 00:20

... dimensions independently and random access decoding. These properties are important to ease of access and processing of the data and were not introduced into SPIHT previously. Coding different areas ... However, the gain in quality introduced by the increase in precision is negligible (about 0.01 dB) compared to the increase in complexity. Thus these weights are not kept in the f...

Ngày tải lên: 22/06/2014, 00:20

... con- straint and the finite switching time between t ransmitting and receiving mode, each sensor is not able to measure the received signal in an interval of (unilateral) size θ around the firing instant ... v de- creases with increasing D/d and decreasing ε. Along with v, Figure 4 shows the measure of irreducibility (or strong con- nectivit y) σ (15) as dashed lines. It is interest...

Ngày tải lên: 22/06/2014, 19:20

... Heidemann, and D. Estrin, “Geogr aphy-informed en- ergy conservation for ad hoc routing,” in Proceedings of the 7th Annual International Conference on Mobile Computing and Networking (MOBICOM ... Chessa, S. De, and A. Urpi, “GPS free coordinate assignment and routing in wireless sensor networks,” in Pro- ceedings of the 24th Annual Joint Conference of the IEEE Com- puter and C...

Ngày tải lên: 22/06/2014, 19:20

... multi-task compressive sensing with dirichlet process priors,” in Interna- tional Conference on Machine Learning, Helsinki, Finland, July 2008. [25] M. E. Tipping and A. C. Faul, “Fast marginal likelihood maximisation ... apply our TBCS in different situations. 3.3. Incorporating A Priori Information into BCS. Now, we study how to incorporate the aprioriinformation obtained in the pr...

Ngày tải lên: 21/06/2014, 05:20

... is obtained in the absence of clustering, on the opposite, when MAC collisions are considered, splitting sensors in noninterfering clusters allows reducing collisions within clusters and leads ... between analytical and simulation results in a scenario with ideal communication links and two possible clustering configurations. nonoverlapping active parts within the beacon interval...

Ngày tải lên: 21/06/2014, 11:20

... evaluation: in (14 )and( 15), the integrand involves the fusion rule that is a highly nonlinear function of the CSI g, making the integration formidable. The only pos- sible way of finding the optimal ... approach and that of minimizing (7) is in the way that the channel fading statistics, p(g), is utilized. In using (7), the variable to be averaged is P e0 (γ 0 , , γ K | g), which is...

Ngày tải lên: 22/06/2014, 22:20