Initialization of transmitter parameters can be done locally by setting values on the transmitter itself or remotely using a PC. A radio transmitter design has to meet certain requirements. These include the frequency of operation, the type of modulation, the stability and purity of the resulting signal, the efficiency of power use and the power ...

In this paper, the authors discuss some of the popular face recognition algorithms. Face recognition is widely used biometric technique at many places like international airports, gaming industries and commercial places. Normally face recognition process is divided in three phases first is face detection, second is feature extraction from input face image and last is ...

In this paper, the authors use CDS (Connected Dominating Set) technique. In order to improve their QoS (Quality of Service) parameter. They need some changes in existing MBC (Mobility Based Clustering) protocol, a sensor node elects itself as a cluster-head based on its residual energy and mobility. A non-cluster head node aims at its link ...

A powerful aspect of the optical communication link is that, multiple wavelengths can be sent along a single fiber simultaneously in the 1300 to 1600nm spectral band. A novel design of Arrayed Waveguide Grating (AWG) de-multiplexer on 2D photonic crystal is proposed. This device offers 200GHz channel separation and -32dB theoretical cross talk. Finite Difference ...

In the present grid computing environment, the scheduling approaches for resources only focus on the current state of the entire system. Most often they fail to consider the system variation and historical behavioral data which causes system load imbalance. To present a better approach for solving the problem of resource scheduling in a Grid computing ...

With the rapid advancement of wireless network technologies, mobile Instant Messaging (IM) has become a major application in the telecommunications industry. The internet-based instant messaging services (e.g. MSN messenger, GTalk) have become the most popular communication choice among millions of people worldwide. Due to the huge number of mobile subscribers, there is a real demand ...

A network covert channel is a mechanism that can be used to leak information across a network in violation of a security policy and in a manner that can be difficult to detect. Covert channels exist in most communication systems and allow individuals to communicate truly undetectable and exchange hidden information. These are used for ...

Floating Point (FP) arithmetic is widely used in large set of scientific and signal processing computation. adder/subtractor is one of the common arithmetic operations in these computations. This paper implements an efficient high performance floating-point adder/subtractor. The whole design was captured in Verilog Hardware Description Language (VHDL) and targeted on a Virtex-6 Xc6vlx75t-3ff484 Field Programmable ...

Security services such as authentication and pair wise key establishment are critical in sensor networks. They enables sensor nodes to communicate securely with each other. Mobile sinks are useful in many wireless sensor network applications for data accumulation and localized sensor reprogramming. In the key management scheme, an attacker can easily obtain a large number ...