Wireless Personal Communications: An International Journal

This paper presents an efficient video compression and transmission scheme based on the Set Partitioning In Hierarchical Trees (SPIHT) algorithm and chaotic Baker map interleaving. The compressed video frames have self-embedded digital signatures, and ...

Nowadays the mobile communication is developing vigorously. In the modern context this is known as the Next Generation of Communication. The Mobile Node (MN) plays a vital role in the mobile communication. There are two types of mobility management ...

By applying the covariation statistics, this paper generalizes the non-circularity to the scenario of complex isotropic symmetric alpha-stable ($$ S\alpha S $$SźS) signals. The matrices based on fractional lower order moments for the extended sensor ...

Despite the ever increasing demand for radio spectrum we are not able to achieve complete efficiency in utilizing the spectrum. The spectrum itself being restricted can only accommodate limited number of users. Therefore, it is very critical to ...

Owing to the inherent nature, data packets in internet protocol television (IPTV) systems face two major challenges; loss and delay. On the other hand, there is a stringent constraint of minimum speed to make possible delivery of the right number of ...

Cooperative awareness among vehicles is required to make driving safer. Inter-vehicle communication is achieved by beaconing in the vicinity of the respective vehicles. The beaconing includes the exchange of periodic messages on each vehicle's status ...

Energy consumption and security are two important aspects of Mobile Ad Hoc Networks (MANETs). In MANET, application security can be provided using trust management, key management, firewalls and intrusion detection. Moreover, it is often necessary to ...

This letter presents computationally efficient subspace-based estimators to estimate carrier frequency offset (CFO) for interleaved orthogonal frequency division multiple access (OFDMA) uplink systems. Conventional subspace-based estimators rely on ...

The fast development in wireless communications and frequency bands assignments for every communication system limits the spectrum resources. Various techniques, for example, cognitive radio have occurred to tackle this issue by allowing unlicensed ...

In parallel with lots of research to improve message delivery rate in Delay Tolerant Networks (DTN), additional application specific requirements are demanded to deploy them in the real world. Among many requirements, we focus on desired delivery ratio ...

Wireless sensor networks (WSNs) have been widely used in many applications recently. As an important application of the WSNs, the wireless medical sensor networks (WMSNs) could improve health-care quality and have become significant in the modern ...

In the conventional beamforming-based transmitting scheme for a multiple-input single-output (MISO) system, many transmitting antennas are usually required. In this paper, a direction of arrival (DOA) based spatial focusing scheme for a 2 1 MISO system ...

With advancement in device miniaturization and efficacy of network protocols, in a variety of civilian and military applications, wireless sensor networks (WSNs) architectures find room as viable network paradigm. Invariably, in all these WSN ...

Cooperative spectrum sensing based on Dempster---Shafer (D---S) theory has attracted a large amount of interest in cognitive wireless sensor networks. However, most of them employ energy detection (ED) in local sensing, where the classical Gaussian ...

In cognitive wireless networks, spectrum owners (primary users, PUs) may lease the unused spectrum to unlicensed users (secondary users, SUs). This spectrum is used to establish a secondary network that serves real time connections. The size of leased ...

In this paper, the problem of extracting a narrow-band signal in strong chaotic background is considered. A method which in simulation can extract narrow-band signal well is put forward. The proposed method is a mixed model which combines the local ...

The synchronization problem of the wireless transmission in real-time visual surveillance applications was addressed. The distributed architecture of wireless multimedia sensor networks was adopted to obtain the key frames from multi-views synchronously,...

The real-time application is the main challenge that faces the wireless network. It must achieve the quality of service (QOS) requirements to success. IEEE802.11 standards use Enhanced Distributed Channel Access (EDCA) protocol and Distributed ...

Mobile gadgets today are swaggering computing potential and memory at par or at times even higher to that found in desktop personal computers. A wireless interconnection has turned out to be considerably more readily accessible these days. As ...

Network virtualization (NV) has been successfully applied in wired networks, providing abstraction of the networking equipment and simplifying the network/resource management procedures. However, more light needs to be shed on how the emerging NV ...

Traffic congestion is a major mobility problem, which generates enormous economic resources and causes serious problems for the most dense of cities. Intelligent transportation systems based on vehicular ad-doc network (VANET) communications will ...

Collaborative multi-user transmission and detection is a contemporary technique used for the up-link of code-division multiple access (CDMA). CDMA has contributed much to the field of wireless communication and still addresses many of the capacity and ...

Energy conservation in resource constrained wireless sensor networks (WSNs) is an important concern. Techniques such as, energy conserving MAC protocols have been proved to be efficient to minimize the energy consumption in such networks. However, ...

Traditional power control schemes in Orthogonal Frequency Division Multiplexing based Cognitive Radio Networks (CRNs) are achieved under perfect channel state information (e.g., exact parameter information). Due to the effect of channel estimation ...

In this work, we investigate the use of domain decomposition techniques in developing novel block-wise PIC detectors for communication systems. Specifically, we consider the cancellation of inter-antenna-interference in the uplink of massive MIMO ...

Communication between satellite and ground station requires the antenna to be directly towards satellite for telemetery and telecommand data exchange. Hence, role of satellite tracking is clear. There are various techniques for satellite tracking. In ...

Because of comprehensive and simple structures, various types of combinatorial designs are used to construct key predistribution schemes for wireless sensor networks. However, these schemes are typically concentrated on networks, where all sensor nodes ...

In this paper, a new non-coherent chaos-based digital communication system combined short reference Quadrature chaos shift keying with orthogonal frequency division multiplexing named (OFDM-SRQCSK) is presented. This system is an extension of short ...

Nowadays, the electromagnetic compatibility in radio frequency communication systems attracts a great attention as the wireless spectrum becomes overcrowded. A lot of wireless systems operate in the same bands or in the adjacent frequency ones. This ...

The weighted K-nearest neighbor algorithm (WKNN) is widely used in indoor positioning based on Wi-Fi. However, the accuracy of this traditional algorithm using Euclidean distance is not high enough due to the ignorance of statistical regularities from ...