Ultra-Wide Band Radar and its Applications
Voice over Internet Protocol Codec Performance in Interactive Streaming Environment
Design and Simulation of Phased Array Antenna 5G Applications
A Study on Energy Consumption and Impact on Network Lifetime using ANODR and DYMO Routing Protocol in MANETs using QualNet Simulator
A Review on Evolution, Expectations and Key Enabling Techniques of 5G
Cognitive Radio Simulator for Mobile Networks: Design and Implementation
Reduced End-To-End Delay for Manets using SHSP-EA3ACK Algorithm
Light Fidelity Design for Audio Transmission Using Light Dependent Resistor
Dynamic Digital Parking System
Performance Analysis of Multi User Transmit Antenna Selection Systems over TWDP Fading Channels
Comparison of Wavelet Transforms For Denoising And Analysis Of PCG Signal
Video Shot Boundary Detection – Comparison of Color Histogram and Gist Method
Curvelets with New Quantizer for Image Compression
Comparison of Hybrid Diversity Systems Over Rayleigh Fading Channel
Design of Close Loop Dual-Band BPF Using CascadedOpen Loop Triangular Ring Resonator Loaded With Open Stubs
The evolution and growth of the telecommunications industry over the past four decades has been responsible for the tremendous changes in the technology of human communication. Now telecommunication architecture had moved from complex to simple making many people to have access to mobile devices. People expect to move around easily with their mobile devices, keeping close communications with their partners, friends and family without worrying about Data and Voice Issues. This paper is to investigate the data and voice issues among the telecommunication companies operating in the Upper East region of Ghana. Issues concerning call drop, call congestion and internet connectivity among network operators have been investigated and analyzed. General rating of the various telecos operating in the region is also presented in this paper.A test to ascertain whether subscribers will change their network provider if the network is persistently bad has also been presented.
A Mobile Ad hoc Network (MANET) is a collection of wireless mobile terminals that are able to dynamically form a temporary network without any aid from fixed infrastructure or centralized administration. In recent years, MANETs are continuing to attract the attention for their potential use in several fields such as military activities, rescue operations and time-critical applications. A very important and necessary issue for mobile ad hoc networks is to find the route between source and destination, which is a major technical challenge due to the dynamic topology of the network. Routing protocols for MANETs could differ depending on the application and network architecture. The efficiency of the wireless link can be increased by multicasting, through sending single copy of messages to all group members. This kind of approach is called clustering in MANET. For this one node work as controller and some node act as normal node. This controlling node assigns channel in its group, and that kind of many groups are formed in the network and called as clusters. Various protocols are proposed for this task. But we will design and implement some of the protocols which are most efficient and reliable. The scope of improvement in these protocols are done by analysis and comparisons.
The objective of this paper is to design an Antenna of larger bandwidth to meet the bandwidth demand. The radiation pattern, gain and directivity requirement for certain applications were unable to be meet by the single element antenna. Suitable solutions can be obtained by combining more than one antenna. Thus, an antenna array was designed and the comparison of various levels of rectangular microstrip antenna arrays such as 2x2 planar array and 1x8 linear arrays are discussed in this paper. At first, a single rectangular microstrip patch antenna was designed in ADS software for the frequency range of (2.4-2.6)GHz. The inset feed is provided for the antenna. The single patch is extended to linear and planar array and their performance were compared. It is observed that the performance of linear array was found to be good. The return loss obtained for linear array was -30dB.
The topologies used in mobile network tend to change depending on the routing protocol. The concept of this paper is to propose two routing protocols to increase the mobility rate and to provide reliable secure route using a PSO fitness value that predicts the topology changes and thus adapts to the tactical network. To do so, the authors have compared AODV and TORA protocols that assume the failure and provide efficient route to balance it. The trace file is created as the result of implementing the protocol which stands as an example. The concept of mobile boundary set mechanism implemented in these protocols predicts the mobile location and provides region information based on the topology used. The simulated work was done with NS2 wireless scenario and gave us better performance.
A new CMOS dynamic comparator using dual input, single output differential amplifier as latch stage suitable for high speed analog-to-digital converters with High Speed, low power dissipation and immune to noise than the previous reported work is proposed. Back to-back inverter in the latch stage is replaced with a dual-input single output differential amplifier. This topology completely removes the noise that is present in the input. The structure shows lower power dissipation and higher speed than the conventional comparators. The circuit is simulated with 1V DC supply voltage and 250 MHz clock frequency. The proposed topology is based on two crosses, coupled differential pairs positive feedback and switchable current sources, has a lower power dissipation, higher speed, less area, and it is shown to be very robust against transistor mismatch, and noise immunity. The simulation results will be shown on the W-Edit; average power consumption is in the T-spice.