Wireless Personal Communications: An International Journal

The challenge of next generation mobile wireless networks necessitates efficient usage of available spectrum. The multiple input multiple output (MIMO)---orthogonal frequency division multiple access (OFDMA) technology exploits spatial and frequency ...

A multiband rectangular microstrip patch antenna integrated with angled split- ring artificial magnetic conducting (AMC) structure is proposed. In order to achieve high gain, directivity and radiation efficiency, an $$3\times 2$$3 2 array of proposed ...

The challenges that load balancing (LB) faces are that there may not always be enough physical servers to be able to handle the demand requested at any one time. If a huge influx of players comes online at the same time, there may just not be enough ...

In this article a high gain of two layer cylindrical dielectric resonator antenna fed through coaxial probe is projected and developed and conjointly offer complete implementation of superstrate dielectric resonator antenna on patch. The hybrid ...

One of the complex problems nowadays in communication systems is the lack of frequency spectrum. To solve this problem, cognitive radio is considered the best candidate that can opportunistically exploit the spectrum. The periodogram based spectrum ...

The characteristics of the wireless medium create difficulty to shield the data transmission from unauthorized recipients. In this paper, power optimization in an amplify-and-forward untrusted relay network is presented, using cooperative jamming ...

Clock bias is a vital element in clock calibration system. Aiming at effectively eliminating noises contained in clock bias and improving accuracy of time synchronization, we propose an adaptive algorithm. In this adaptive algorithm, ensemble empirical ...

The smart card based password authentication scheme is one of the most important and efficient security mechanism, which is used for providing security to authorized users over an insecure network. In this paper, we analyzed major security flaws of ...

In this paper, we introduce a method of user loading for interleave division multiple access (IDMA) based two-tier Heterogeneous network (HetNet) to achieve improved performance in terms of lower bit-error rate (BER) for active micro-cell users present ...

Smart Grid, also known as the next generation of the power grid, is considered as a power infrastructure with advanced information and communication technologies (ICT) that will enhance the efficiency and reliability of power systems. For the essential ...

In this paper, a two-element UWB MIMO antenna with bi-directional radiation pattern is designed for superior UWB MIMO performance. The designed antenna adopts asymmetric coplanar waveguide ground feeding. The proposed antenna ECC is lower than the ECC ...

Reducing energy consumption and increasing network lifetime are the major concerns in Wireless Sensor Network (WSN). Increase in network lifetime reduces the frequency of recharging and replacing batteries of the sensor node. The key factors influencing ...

Information-centric network (ICN) has become a basic research topic with regard to the future architecture of the Internet. Storage and routing data is an important feature of ICN, as it improves network performance and content distribution. One of the ...

For decades, the design of reflectarray antennas followed a unified strategy of selecting a certain unit cell for the whole design. After that, the dimensions or orientations of this unit cell are changed to achieve the required phase shift at each ...

The existing RFID (Radio Frequency Identification) security protocol lacks the key establishment mechanism, assuming only that both parties of the authentication protocol have shared their respective session keys. However, key establishment is an ...

Wireless Sensor Network were deployed in a complex environment where the wide range of complex application is mandatory for the services. Such application includes military, agriculture, healthcare, defense, monitoring, surveillance etc. In general ...

With the growth of the Mobile Internet, people have become active in both the online and offline worlds. Investigating the relationships between users' online and offline behaviors is critical for personalization and content caching, as well as ...

Using self-optimization techniques is the only viable solution for increasing the efficiency in next generation mobile networks. The goal of proposing a self-optimization model is to maximize the network efficiency and increase the quality of services ...

In the healthcare domain, Wireless Body Area Network has emerged as a vital technology that is capable of providing better methods to diagnose various hazardous diseases. The CANet projet is a project that proposes alternative monitoring solutions. This ...

An intricate network deployment for high demand users leads to simultaneous transmission in wireless mesh networks. Multiple radios are adapted to individual nodes for improving network performance and Quality of Service (QoS). However, whenever ...

Automatic analysis of chest radiographs using computer-aided diagnosis (CAD) systems is pivotal to perform mass screening and detect early signs of various abnormalities in patients. In a chest radiographic CAD system, segmentation of lung fields is a ...

Wireless networks have emerged as a key enabling technology, expanding rapidly and offers numerous potential applications. The security issues have to be adequately addressed to realize the potential of multi-hop cooperative wireless network scenarios. ...

Lifetime is a major challenge in wireless sensor networks which depends on the energy consumption of the nodes. Energy limitation in nodes leads to many researches to find out new solutions for this problem. Clustering is an efficient solution for this ...

A new routing protocol of wireless sensor network is proposed in this paper. Node residual energy, network topology density and the distance to the sink are all under consideration in the cluster-head election, which could improve the network energy ...

A low cost strain gauge can be implemented to detect damage before natural disaster phenomena in real time for monitoring the health of structure. The most common non-destructive sensing element such as strain gauge employs in the form of array is to ...

Femtocells are the solution to improve cellular system capacity in indoor coverage. In two-tier networks, co-channel interference is a serious problem. In this paper, an efficient spectrum allocation scheme is proposed to improve signal to interference ...

In this paper, a wireless cooperative network, with two sections, operating over multipath mobile-to-mobile interference-limited fading channel is considered. The desired signal and the cochannel interference experience ?---μ short term fading. The ...

Wireless Sensor Networks plays an important role in creating and developing smart environments. It includes sensors geographically distributed which are interconnected and hence forming a wireless network. Under any hazardous and danger prone situations,...

Most of the block ciphers contain substitution-boxes as their cornerstone primitive to add requisite nonlinearity. S-boxes are responsible to ensure strong confusion and resistance to linear and differential assaults. The security of such ciphers relies ...

In WSNs (Wireless Sensor Networks), data storage and retrieval is a challenging problem because of the limited resource and the short communication radius of the sensor nodes. Most of the existed schemes choose one or more static sensor nodes or Sinks ...