Data sharing for data collection among multiple applications is an efficient way to reduce communication cost for Wireless Sensor Networks (WSNs). This paper is the first to introduce the interval data sharing problem which is to investigate how to transmit as less data as possible over the network and meanwhile the transmitted data satisfies the ...
Cloud computing moves the application software and databases to the centralized large data centers, where the management of the data and services may not be fully trustworthy. In this paper, they study the problem of ensuring the integrity of data storage in cloud computing. To reduce the computational cost at user side during the integrity ...
OFDM is a special case of multi-carrier modulations, which is of great use in various wireless communications, such as DAB, DVB, HDTV, CMMB, TMMB and 802.11a. The OFDM frame structure is similar to each other. It consists of a number of OFDM symbols following the synchronizing signal with different cyclic prefix and guard interval. In ...
Road traffic density estimation provides important information for road planning, intelligent road routing, road traffic control, vehicular network traffic scheduling, routing and dissemination. The ever increasing number of vehicles equipped with wireless communication capabilities provide new means to estimate the road traffic density more accurately and in real time than traditionally used techniques. In this ...
Firewalls are critical security devices handling all traffic in and out of a network. Firewalls, like other software and hardware network devices, have vulnerabilities, which can be exploited by motivated attackers. However, because firewalls are usually placed in the network such that they are transparent to the end users, it is very hard to identify ...
Low-Density Parity-Check (LDPC) approaches Shannon-limit performance for binary field and long code lengths. However, performance of binary LDPC code is degraded when the code word length is small. An optimized min-sum algorithm for LDPC code is proposed in this paper. In this algorithm, unlike other decoding methods, an optimization factor has been introduced in both ...
With rapid development of the Internet, Internet surfing has been an important daily activity for peoples. There are many websites and web pages containing obscene and malicious information such as phishing, spam and pornography that peoples can easily obtain. In order to improve network security service, the authors developed and implemented a content-based filter system ...
Cloud computing is one of today’s most exciting technologies, because it can reduce the cost and complexity of applications, and it is flexible and scalable. These benefits changed cloud computing from a dreamy idea into one of the fastest growing technologies today. Actually, virtualization technology is built on virtualization technology which is an old technology ...
Electro-Migration (EM) is a critical problem for interconnect reliability of modern Integrated Circuits (ICs), especially as the feature size becomes smaller. In Three-Dimensional (3D) IC technology, the EM problem becomes more severe due to drastic dimension mismatches between metal wires, Through-Silicon-Vias (TSVs) and landing pads. Meanwhile, the thermo-mechanical stress due to the TSV can also ...
FCC allocated 3.1 to 10.6GHz band as the spectrum of the Ultra-Wide Band Impulse Radio (UWB-IR) system. Besides for data communication applications, the spectrum has also been frequently reported for being used for radar application. To support its ranging capability, the radar usually adopts coherent detection architecture, whose demodulation process requires not only the phase ...