Growth in technology has led to unprecedented demand for high speed architectures for complex signal processing applications. In 4G wireless communication systems, bandwidth is a precious commodity, and service providers are continuously met with the challenge of accommodating more users within a limited allocated bandwidth. To increase data rate of wireless medium with higher performance, ...

The Multi-Carrier Code Division Multiple Access (MC-CDMA) is becoming a very attractive multiple access technique for high-rate data transmission in the future wireless communication systems. This paper is focused on reviewing different sub-carrier selection techniques for MC-CDMA system. It has been seen that appropriate subcarrier selection technique can significantly improve Bit Error Rate (BER) performance, ...

Sensor networks consist of several sensor nodes which co-operatively send sensed data to base station. One of the critical constraints of sensor nodes is the power consumption requirement. Sensor nodes carry limited, generally irreplaceable, power sources. In real life scenario when these sensor nodes are deployed in any environment it is possible that these nodes ...

Noise pollution due to excessive honking on expressways is on an increase due to the impulsive and at times errant behavior of drivers. Besides it is difficult at times due to various factors to completely avoid honking in the no honking zones. These factors contribute to the noise-pollution and at a stage today it is ...

Every company wants to maximize its network resources, but doing so can be tough when struggling with traffic floods, malicious users, or underperforming applications. When activity overwhelms your system, service quality can suffer. Riverbed? Stingray? Traffic Manager helps guarantee service levels for your important users by defining the service policies that deal with these problems, ...

Network coding has recently attracted attention as a substantial improvement to packet retransmission schemes in wireless Multicast Broadcast Services (MBSs). In this paper, it is concentrating on increasing the efficiency of bandwidth and reducing the retransmission of packets on wireless multicast broadcast services. In the existing system there are three main schemes are used. ONCR ...

Dual reflector antennas are considered as pencil beam antennas that can produce radiation identical to searchlight. Cassegrain Reflector Antenna Design consists of various effects caused by blockage by primary feed or by the sub-reflector and its effect on overall performance. The objective of the paper is to provide the overview of the designing approach that ...

Although mobile devices include accessibility features available for visually impaired users, the user interface of the majority of the mobile apps is designed for sighted people. It is clear that “Design for Usability” differs depending if the final user is a sighted user or a visually impaired user. This paper introduces the concept of “Low ...

This paper presents the results of a descriptive case study concerning adoption of iPad or other tablets as assistive technology. Two pilot studies concerning the adoption and use of the iPad for active reading in a teaching/learning situation have recently been conducted at elementary school level and at university level. In the course of both ...

The modulators are the basic requirement of the communication systems they are designed to reduce the channel distortion & to use in RF communication hence many type of carrier modulation techniques has been already proposed according to channel properties & data rate of the system. Here, the authors are proposing the FPGA based QPSK modulator ...

LTE-Advanced (4G) is a 3GPP standard that describes technological advancements to the Long Term Evolution (LTE) a highly flexible radio interface that aims at bridging the gap between 3rd generation and 4th Generation (4G) standards. LTE Advanced does meet most of the standards for 4G deployment, though it is often described as 3.9G or pre-4G. ...

The effects of data center traffic characteristics on data center traffic engineering is not well understood. In particular, it is unclear how existing traffic engineering techniques perform under various traffic patterns, namely how do the computed routes differ from the optimal routes. The authors’ study reveals that existing traffic engineering techniques perform 15% to 20% ...

In this paper, a Ku-band corrugated feed horn antenna for a Cassegrain reflector is designed and optimized. The horn dimension parameters are optimized so that it has a radiation pattern with a specific beamwidth which would illuminate the sub-reflector of the Cassegrain antenna with the desired taper. It is also required that the horn must ...

The network processor incorporates a processor and a number of coprocessors that can be connected to the processor either Directly or using a shared bus This paper presents the proposal and development of a reconfigurable crossbar switch architecture for network processors. Its main purpose is to increase the performance, and flexibility for environments with multiprocessors ...

With video conferencing becoming extremely popular in wired and wireless network, efficient utilization of the network bandwidth is important to achieve Quality of Service (QOS). Internet Protocol (IP) multicast is a routing technique that allows IP traffic to be sent from one source or multiple sources and delivered to multiple destinations. Instead of sending individual ...