Wireless sensor networks are now-a-days used in various applications to facilitate monitoring and actuation tasks, e.g., for smart grids and industrial automation. Some of these applications require guarantees or at least assurances on reliability. Such applications expect predictable throughput and delay, which are hard to maintain in environments with changing radio conditions. QoS (Quality of ...

In this paper, the authors present an experimental study on the performance of spatial Interference Alignment (IA) in indoor wireless local area network scenarios that use Orthogonal Frequency Division Multiplexing (OFDM) according to the physical-layer specifications of the IEEE 802.11a standard. Experiments have been carried out using a wireless network testbed capable of implementing a ...

The combination of mobile communications and cloud computing are growing immensely popular. Application designers and architects use cloud technology advantages to deliver data and information to mobile devices as swiftly and seamlessly as possible. However, a critical aspect in this scenario is the factor of routing. Complex routing techniques can use up a lot of ...

The increasing customer base has been posing a challenging situation for the existing Internet architecture that cannot be used for efficiently handling the massively growing demands with respect to optimal channel capacity and traffic congestion controls. The paper has reviewed all the major significant congestion control techniques on various types of network and found that ...

Cognitive Radio Networks (CRNs) have emerged as a promising paradigm that can solve the shortage of spectrum resources, providing the ability to adapt and opportunistically exploit the spectrum holes. The rendezvous process allows cognitive users to find a common channel and establish a communication link. In this paper, they focus on the design of fast ...

Cloud computing has become the focus of attention in the computing industry. However, security concerns still impede the widespread adoption of this technology. Most enterprises are particularly worried about the lack of control over their outsourced data, since the authentication and authorization systems of Cloud providers are generic and they cannot be easily adapted to ...

In this paper, the authors propose a topology control technique to reduce the energy consumption of Wireless Sensor Networks (WSNs). The technique makes use of both power control and power management methods. The algorithm uses the power management technique to put as many idle nodes as possible into the sleep mode while invoking the power ...

Considering a large-scale Energy-Harvesting Wireless Sensor Network (EH-WSN) measuring compressible data, sparse random projections are feasible for data well-approximation and the sparsity of random projections impacts the Mean Square Error (MSE) as well as the system delay. In this paper, the authors propose an adaptive algorithm for sparse random projections in order to achieve a ...

Cognitive radio is a promising technology that uses radio spectrum opportunistically and efficiently. In this paper, they present the performance of ‘Always transmit’ strategy, which consists of allowing the cognitive source to transmit over all time slots and in any time slot. Thus, the cognitive source will be able to operate continuously whenever either the ...

In this paper, the authors consider a distributed virtual Multiple-Input Multiple-Output (MIMO) coalition formation algorithm. Energy savings are obtained in the reverse link by forming multi-antenna virtual arrays for information transmission. Virtual arrays are formed by finding a stable match between two sets of single antenna devices such as Mobile Stations (MSs) and Relay Stations ...