2015 International Conference on Advances in Computing, Communications and Informatics (ICACCI)

QR codes are used to store information in two dimensional grids which can be decoded quickly. The proposed work here deals with Quick response (QR) code extending its encoding and decoding implementation to design a new articulated user authentication and access control mechanism. The work also proposes a new simultaneous registration system for offices and organizations. The proposed system retri... View full abstract»

A dominant trend nowadays is the rapid spread of small devices, such as laptops and smartphones, carried by people. The users' need for applications with local high-bandwidth requirements and due to limited wireless Internet access, a challenge if identified which is critical for the success of applications such as local wireless data synchronization, gaming or communication. Opportunistic network... View full abstract»

The advancements in wireless mesh networks (WMN), and the surge in multi-radio multi-channel (MRMC) WMN deployments have spawned a multitude of network performance issues. These issues are intricately linked to the adverse impact of endemic interference. Thus, interference mitigation is a primary design objective in WMNs. Interference alleviation is often effected through efficient channel allocat... View full abstract»

In a dynamic access network, multiple secondary users access and share channels that are not used by the primary users. Uncoordinated and random channel access by the secondary users access leads to decreased secondary network throughput as users in the close proximity interfere with each other. In order to better utilize the channels, we propose a scheduling technique that assigns unique time slo... View full abstract»

In this paper, we propose an auction where the primary users (i.e., spectrum licence holders) sell spectrum to secondary users (i.e., non-licence holders) in a dynamic spectrum access networks. We consider a market like scenario where chunks of spectrum is traded where buyers put forward multiple bids based on how much spectrum they need and what is the price they are willing to pay. We use the Si... View full abstract»

Designing high performance channel assignment schemes to harness the potential of multi-radio multi-channel deployments in wireless mesh networks (WMNs) is an active research domain. A pragmatic channel assignment approach strives to maximize network capacity by restraining the endemic interference and mitigating its adverse impact on network performance. Interference prevalent in WMNs is multi-fa... View full abstract»

The paper discusses about the multiple application prototype and a test called the `NfcShop Test' carried in order to evaluate the usability of the same. The approach developed by us will allow the user to buy railway tickets, make hotel payments and pay for car parking, all by just tapping a Near Field Communication (NFC) device/Mobile on the Universal Receiver placed at point of sale (POS) termi... View full abstract»

A number of issues are being addressed in prospective millimetre wave (mmWave) technology for the design of 5G cellular networks. High atmospheric attenuation in the proposed 60GHz band for 5G system put a limit in the communication range and cell size. The channel characteristics may vary for many different indoor and outdoor scenarios, resulting in differing performance. In this paper, an attemp... View full abstract»

Low noise amplifier is designed at 2.1GHz and 4.6GHz. Matching network is designed using lumped elements. Frequency transformation technique is employed to synthesis lumped element. Stabilization circuit is included for stable LNA throughout frequency range. Simulation result gives gain of 12.03dB and 10.16dB and NF of 0.5818dB and 1.2dB respectively at 2.1GHz and 4.6GHz. Input and output VSWR is ... View full abstract»

In previous few years, an incredible growth is witnessed in the popularity and pervasiveness of smart phones. It has also seen that new mobile applications are built day by day. These applications provide users functionality like social networking applications, games, and many more. Some of the mobile applications might be having a direct purchasing cost or be free but having an ad-support for rev... View full abstract»

This paper presents a methodology for designing an adaptive and robust sliding mode controller for a four wheel omnidirectional mobile robot (FWOMR). First kinematic and dynamic equation is derived, considering friction forces and viscous damping effects. In presence of unknown uncertainty FWOMR is unable to track the desired trajectory. To tackle the problem an adaptive integral sliding mode cont... View full abstract»

The design of communication architecture over a sea environment is challenging since it requires careful analysis of different factors such as multipath propagation, antenna characteristics and mobility that affect a signal. Although existing work has addressed a few factors, there is no work which provides a complete analysis of path loss incorporating such factors and how they affect on Received... View full abstract»

In this present technophile era, we are graced with myriad advancements which are nothing short of miracles. One such boon, benevolently acceding to our every requirement in the wing of information transfer within a heartbeat, is the applied science of Ultra Wide Band(UWB) technology. In this paper, we analyzed different slots on micro-strip patch antenna and proposed four modified Ultra-wide band... View full abstract»

In this paper, a planar ultra-wideband antenna (UWB) is analyzed and different methods for creating notches are adopted for efficient WLAN frequency rejection. The antenna is mounted on a dielectric substrate having a value of 3.38. The antenna has a bandwidth of 7.22 GHz and a gain of 1.13 dB. Three different novel approaches for creating notches are presented followed by their comparative study.... View full abstract»

Many articles have been published on TDM SDH backhaul synchronization and few on GSM network (NW synchronization), but very few articles have appeared on experimental trails conducted to show the impact of clock quality and Synchronization on GSM network performance specifically with regard to network hygiene and call quality(call drops and hand overs). In this paper an experimental trail conducte... View full abstract»

The amalgamation of cellular networks provided by different service providers will help in providing high end connectivity to mobile users as well as increasing the overall QoS. The unification of different mobile networks will also give rise to problems such as network congestion etc. Load balancing will become a crucial process to avoid network congestion and performance degradation in future ce... View full abstract»

In this paper, a visible light communication (VLC) in the indoor environment based on MIMO system is investigated and analyzed. An attempt is made to optimize the placement of light emitting diodes (LED) VLC emitter in 4 × 4 MIMO configuration at ceiling and ground floor for the receiver to obtain uniform signal-to-noise ratio (SNR) for the desired bit error rate (BER) in the given area. The syste... View full abstract»

Device-to-Device (i.e. D2D) communication technology not only magnify system capacity but also utilizes the gain of physical proximity of communicating devices to support services like proximity services, traffic offloading etc. from eNB (i.e. evolved Node-B). D2D communication enhanced resource efficiency and brought down traffic load from eNB in LTE-A networks. Coexistence of D2D users and conve... View full abstract»

Traffic grooming schemes have attracted a lot of research attention for addressing the bandwidth mismatch between low data-rate user connection requests and a high capacity lightpath. Survivability of individual user connections is also highly important. The problem of survivable traffic grooming is known to be NP-Complete. In this paper we suggest heuristics to solve the problem in WDM mesh netwo... View full abstract»

Radio Frequency Identification(RFID) is a wireless technology used for tracking a tag attached to an object and uniquely identifying it. In the proposed work, a compact Microstrip antenna that has a high Gain, a good Return Loss (S11), a good Impedance bandwidth and a very good Circular Polarisation working at 2.4 GHz ISM band for RFID Applications has been designed. The antenna has bee... View full abstract»

Sonar projectors are resonant transducers that are operated around the resonance frequency and the power amplifiers of sonar transmitters are designed to drive a non linear, frequency dependent load. The input electrical admittance of these projectors varies rapidly in the frequency band of operation. So the limits of load offered to a power amplifier for a wide bandwidth projector has to be maxim... View full abstract»

Feedback oscillation is one of the major problems faced by the hearing aid users. Adaptive feedback cancellation is used to suppress the feedback by using an adaptive filter to estimate the feedback path. However, this estimate is biased due to presence of high correlation between the original input signal and the loudspeaker input signal. Bias problem produces modeling error and can result in can... View full abstract»

A new fractal antenna is designed for multi band operation. The designed antenna is single layered symmetrical fractal boundary microstrip antenna. By the alteration in the geometry of fractal boundary of the square patch multiband operation is attained. The proposed antenna worked nearly in ten bands of frequency. Four antennas were intended by having a square slot at the middle for circular pola... View full abstract»

Laser induced breakdown spectroscopy (LIBS) is an atomic emission based spectroscopy that uses a laser pulse as the source of excitation. The laser is focused to form hot plasma, which atomizes and excites the sample. In the LIBS spectrum each “feature” is the amplitude or intensity detected at different wavelengths in the range of 200-1000 nm. Pattern recognition techniques were applied on sample... View full abstract»