The evolution of cellular networks from one generation to another has led to the deployment of multiple radio access technologies (such as 2G/2.5G/3G/4G) in the same geographical area. This scenario is termed heterogeneous cellular networks. In heterogeneous cellular networks, radio resources can be jointly or independently managed. When radio resources are jointly managed, joint call admission...

CDMA cellular networks support soft handover, which guarantees the continuity of wireless services and enhanced communication quality. Cellular networks support multimedia services under varied propagation environmental conditions. In this paper, we have shown the effect of characteristic parameters of the cellular environments on the soft handover performance. We consider path loss exponent, s...

An alternative mathematical expression for the co-channel interference probability is used, in order to calculate the cellular mobile radio system capacity and to construct a set of compatibility constraints needed for the development of fully adaptive channel allocation (FACA) strategies. The development of such channel allocation techniques becomes a main thrust for the system engineers in or...

Two distinct error and flow control schemes may be simultaneously involved in wireless Internet networks. One is an end-to-end transport protocol TCP which provides reliable packet delivery with flow and congestion control, and the other is a radio link ARQ protocol which provides radio link layer frame error recovery. In this paper, we investigate interactions between these two separate error ...

Memory disturbances are a frequent outcome of brain damages. Maintenance or enhancement of the patients’ life quality requires an enormous effort of caregivers or family members. To support patients with brain injuries the mobile distributed care system named MEMOS (Mobile Extensible Memory System) was designed, implemented and tested in the daycare clinic for cognitive neurology at Leipzig Uni...

Several power control methods in cellular radio system are reviewed. Adaptive power control scheme based on the adaptive optimization of transmitter power and receiver filter coefficients is analyzed. The scheme can be mapped to power control algorithm, adaptive receiver digital filter, RAKE receiver power estimator and analog RF power amplifier. The implementation, co-simulation and co-synthes...

The industrial Internet of Things (IoT) is aiming to interconnect humans, machines, materials, processes and services in a network. Wireless Sensor Network (WSN) comprises the less power consuming, light weight and effective Sensor Nodes (SNs) for higher network performance. Radio Frequency Identification (RFID) and sensor networks are both wireless technologies that provide limitless future po...

the cellular automata method has been used to simulate the pattern formation of the schlögl model as a bistable reaction-diffusion system. both microscopic and macroscopic cellular automata approaches have been considered and two different methods for obtaining the probabilities in the microscopic approach have been mentioned. the results show the tendency of the system towards the more stable ...

Service based architecture (SBA) is a paradigm shift from Service-Oriented Architecture (SOA) to microservices, combining their principles. Network virtualization enables the application of SBA in cellular systems. To better guide software design this virtualized system with SBA, paper presents perspective and positional approach using fundamental development principles for adapting Radio Acces...

Fig. 6: The values for throughput and delay presented here are normalized to 100% of a single superframe. Based on its demand a player can react on the opponents behavior and adapt its scheduling of transmission opportunities to maximize its payoff .. Fig. 8: Only neighbouring stations are in reception range. Since station 1 and station 4 have only one neighbour, it is more likely for them to g...