where SNR is the signal-to-noise ratio. For SNR ≪ 1 capacity can be achieved using binary linear codes and BPSK modulation, whereas for SNR ≫ 1 we need M -ary modulation with M > 2. A combination of M -ary modulation with M -ary linear codes cannot achieve Shannon capacity since the symbols occur with equal probability and a Gaussian input is required to achieve the capacity C; with M -ary line...

We apply Preuss' concept of $mbbe$-connectedness to the categories of lattice-valued uniform convergence spaces and of lattice-valued uniform spaces. A space is uniformly $mbbe$-connected if the only uniformly continuous mappings from the space to a space in the class $mbbe$ are the constant mappings. We develop the basic theory for $mbbe$-connected sets, including the product theorem. Furtherm...

Multi-hop relaying can increase the data capacity of cellular systems by reducing path loss, mitigating shadowing, and enabling spatial reuse. However, the analysis of capacity in relay networks remains an open problem. In this paper we calculate throughput regions for some specific cellular multi-hop relay network topologies allowing for non-uniform traffic distribution. There is a trade-off b...

Let f be meromorphic on the compact set E ⊂ C with maximal Green domain of meromorphy Eρ(f), ρ(f) < ∞. We investigate rational approximants with numerator degree 6 n and denominator degree 6 mn for f . We show that the geometric convergence rate on E implies convergence in capacity outside E if mn = o(n) as n → ∞. Further, we show that the condition is sharp and that the convergence in capacity...

The optimal antenna location for maximizing the channel capacity is searched by particle swarm optimizer (PSO). There are two different receiver locations considered in the simulation. The receivers are located with uniform intervals distribution (i) on the tables; (ii) in the whole indoor environment. Numerical results have shown that our proposed method is effect to find the optimal location ...

We show the capacity of a generalized pulse-position modulation (PPM) channel, where the input vectors may be any set that allows a transitive group of coordinate permutations, is achieved by a uniform input distribution. We derive a simple expression in terms of the Kullback–Leibler distance for the binary case, and find the asymptote in the PPM order. We prove a sub-additivity result for the ...

--------------------------------------------------------ABSTRACT------------------------------------------------------------This paper presents the performance analysis of apodized fiber bragg an optical communication system. The effected fiber bragg for capacities uniform, Gaussian and tanh capacity has been implemented and investigated. The variable file of FBG performance is talented for the...

We consider the problem of jointly determining installed capacity levels and associated tariffs on the arcs of a multicommodity transportation network. We model this situation as a joint pricing and network capacity setting problem. Capacities are available at discrete, non uniform levels. This problem is first formulated as a mixed integer bilevel program. Next, we develop an algorithmic frame...

inthis paper, the main aim is to introduce the class $mathcal{u}_p(lambda,alpha,beta,k_0)$ of $p$-harmonic mappings togetherwith its subclasses $mathcal{u}_p(lambda,alpha,beta,k_0)capmathcal {t}_p$ and $mathcal{u}_p(lambda,alpha,beta,k_0)capmathcal {t}_p^0$, andinvestigate the properties of the mappings in these classes. first,we give a sufficient condition for mappings to be in $mathcal{u}_p(l...

Background: Although advantages of immobilization of cells through entrapment in calcium alginate gel beads have already been demonstrated, nevertheless, instability of the beads and the mass transfer limitations remain as the major challenges.Objective: The objective of the present study was to increase the stability, porosity (reduce mass transfer limit...