We propose a distributed spectrum access algorithm for cognitive radio relay networks with multiple primary users (PU) and multiple secondary users (SU). The key idea behind the proposed algorithm is that the PUs negotiate with the SUs on both the amount of monetary compensation, and the amount of time the SUs are either (i) allowed spectrum access, or (ii) cooperatively relaying the PU’s data,...

Genetic Algorithm (GAs) is used to solve optimization problems. It is depended on the selection operator, crossover and mutation rates. In this paper Roulette Wheel Selection (RWS) operator with different crossover and mutation probabilities, is used to solve well known optimization problem Traveling Salesmen Problem (TSP). We have compared the results of RWS with another selection method Stoch...

This paper presents, a spectrum sharing strategy in cooperative cognitive radio network (CCRN). A multi-phase cooperation architecture is explained and studied with cooperation partner selection and spectrum sharing among secondary users (SUs).The data of primary users (PUs) forwarded to the cooperation partners who are selected from SUs, and then acquire the spectrum access opportunities for t...

Intelligibility assessment is one of the important aspects in the text-to-speech system (TTS) evaluation. Several intelligibility assessment methods have been proposed and successfully applied to European languages, both at word level and sentence level. Since Mandarin has its own unique features, these methods must be modified when applying to Mandarin. The word level assessment methods such a...

This paper proposed a new Stackelberg game theoretic solution for joint power control and channel allocation in Cognitive Radio Networks (CRNs). The Primary Users (PUs) can admit Second Users (SUs) to access by pricing their interference power under the Interference Power Constraint (IPC). So, we formulate suitable revenue functions for SUs and PUs to manage the radio resource among users effic...

We consider a hierarchical game theoretic model for cognitive radio (CR) networks in which primary users (PU) set the price to charge secondary users (SU) for accessing the licensed spectrum and SUs optimize their transmit powers according to the price imposed by PUs. Pricing strategies can be tailored to steer SUs to a Stackelberg equilibrium. We establish a coalition formation game framework ...

We build dialogue system policies for negotiation, and in particular for argumentation. These dialogue policies are designed for negotiation against users of different cultural norms (individualists, collectivists, and altruists). In order to learn these policies we build simulated users (SUs), i.e. models that simulate the behavior of real users, and use Reinforcement Learning (RL). The SUs ar...

This paper deals with design and performance estimation of typical units blocks of a ternary DSP using SUS-LOC concepts. SUS-LOC enables the design of ternary logic cells and is based upon the use of enhanced and depleted MOS transistors. After the presentation of the basic concepts and of the transistor models required for SUS-LOC specific transistors, we show the design of ternary combinatori...

OBJECTIVES to analyze and compare the incorporation of the ethical-doctrinal and organizational principles into the social representations of the Unified Health System (SUS) among health professionals. METHOD a study grounded in Social Representations Theory, undertaken with 125 subjects, in eight health institutions in Rio de Janeiro. The free word association technique was applied to the in...

We study the performance of an opportunistic spectrum access (OSA) system with a general number of channels and imperfect spectrum sensing. The OSA system consists of a primary system serving primary users (PUs) and a secondary system serving secondary users (SUs). The PUs have strict priority over the SUs and the SUs opportunistically access the channels not occupied by the PUs temporarily. Th...