--The All-Digital Phase-Locked Loop (ADPLL) is digital electronic circuit that are used in modern electronic communication systems like frequency synthesizer, modulator/demodulator etc. This paper presents a review of various ADPLL techniques. The range of input frequency of ADPLL is 40 to 98 MHz; the output frequency may be up to 2.92 to 4 GHz range. The components of ADPLL such as phase detec...

391 Abstract— Detection and correction of errors in digital data is an important issue for the modern communication systems. Therefore an efficient error control code is needed to protect the digital data. In high speed communication system Reed-Solomon codes are widely used to provide error protection especially against the burst errors. Reed-Solomon codes are cyclic, non-binary codes. In this...

This paper proposes a novel Digital Down Converter (DDC) architecture for bit serial data, that can be used in digital receivers. The major advantage of proposed DDC is that the data is bit serial which results in reduced area and better timings. The proposed architecture is best suited for bit serial communication system with bit serial Analog to Digital Converter (ADC).

The principles of optical fiber communication and optical data storage have evolved over the past decade into industry standards for transmission, distribution, storage, and archival of digital audio, multimedia, and computer data. The fundamentals of these sophisticated systems are traditionally taught in the lecture hall, and laboratory exposure to the hardware is at the device rather than th...

The availability of fast and reliable Digital Identities is an essential ingredient for the successful implementation of the public-key infrastructure of the Internet. All digital identity schemes must include a method for revoking someone's digital identity in the case that this identity is stolen (or canceled) before its expiration date (similar to the cancelation of a credit-cards in the cas...

the explosion of information communication technology (ict) since the beginning of the 20 th century has been rendering manual-based library system in academic, research, special and public libraries less relevant. this is because using and implementing information communication technology in the library depend largely on the librarian attitude toward the current digital age. this study examine...

Information Communication Technologies are the core of a new life that has made a new entity, the Information Society with a specific education system. From this viewpoint the Information Society and the way of learning is deemed to be as different from ancient, industrial and agricultural epochs. Since the 1950's, the advent of computers brought high hopes of the power of technology to revolut...

This paper presents the design and performance evaluation of communication and video system for a multi-legged subsea robot which can work in shallow and strong tidal current and high turbidity environment by crawling sea floor. The design keys are hierarchical network structure based on Gigabit Ethernet and full digital video transmission. Especially, the digital video transmission can minimiz...

This restricted digital representation is the result of constrained internal memory or communication bandwidth between different components or machines, which may be due to limited power or limited capacity compared to the size or amount of data. For example, emerging sensor network technologies in medicine and “smart cities” use many low-cost sensors to collect large amounts of data and transm...