Wireless networking

Most waterproof cell phone cases are designed in a way that encloses your phone completely. However, some cases are well customized to allow you to continue using your phone while it’s in the case. Such cases are only meant to protect the phone and offer a strong grip without interfering with its accessibility. While others are simply slip-and-slide utilities, others are further advanced with extra features. These include arm bands, which make it safer for outdoor activities such as water sports…

Chapter 5 Proximity Sensor 5.1 Introduction A proximity sensors is the sensor able to detect the presence of nearby objects without any physical contact. A proximity sensors often emits an electromagnetic field or a beam of electromagnetic radiation, and looks for changes in the field or return signal. The object being sensed is often referred to as the proximity sensor's target. Different proximity sensor target demand different sensor. For examples a capacitive or photoelectric sensors…

2 OFDM SYSTEM:- OFDM system is divided into three parts 1. multi carrier modulation 2. frequency division multiplexing 3. Orthogonal frequency division multiplexing. 1.Frequency division multiplexing:- Frequency Division Multiplexing is a form of signal multiplexing which involves assigning non – overlapping frequency ranges or channels to different signals or to each user of a medium. A gap is left between each of these channels to ensure that the signal of one channel does not overlap with…

External Environment Analysis Analyzing the external environment of Verizon, requires the use of PESTEL and Porter’s five forces model. Threat of Entry: Low threat. New entrants don’t present a problem to Verizon. Establishing a wireless company is expensive, it requires a substantial amount of capital, work and resources, and additionally it requires to comply with government regulations that could take a high number of years to comply with, something that dissuades new comers. Power of…

Do you know what an RFID tag does? An RFID tag is a small microchip placed into things like: supermarket items(known as the barcode), inside people, pets, computers, phones, etc. to track them down, read their data and transfer files to and from. An RFID tag is a Radio frequency identification device(Tag You're It 72). It contains radio frequency which means anyone with an RFID tag reader can receive radio waves and see whatever the RFID tag contains. Even Though RFID’s track kids and pets that…

Assessments (Or “What do we have of value that must be protected?”) A. The Company Network Figure 1: Existing Company Network 1. Physical Devices a) The NETGEAR MR814 Wireless Router (all versions) has two key vulnerabilities. First, the MR814 only supports Wired Equivalent Privacy (WEP) encryption to secure traffic sent over the wireless network [1]. WEP has numerous, well documented vulnerabilities and exploits. In its standard implementation, WEP can be compromised easily with a…

high data rate wireless communication, etc. Instead of radio frequency, VLC uses light, to transfer data. The visible light spectrum is unlicensed and 10,000 times larger than the range of radio frequencies. It can be used as an alternate to the existing radio based wireless communication technologies or in hybrid. Moreover, Integrated VLC resolves issue of load balancing in existing wireless…

Case Study: New College, University of Oxford New College simplifies wireless access while increasing visibility and security New College was looking for a new security automation and orchestration solution. The IT office at New College realized that although their homegrown authentication and registration solution had succeeded for many years, new security measures were needed because of student-driven demand for campus-wide wireless and wired connectivity. Among other capabilities, New College…

Adair, E, and Peterson, R. (2012). Biological Effects of Radiofrequency- Microwave radiation, IEEE Transactions on microwave theory and techniques, Vol 54 (3) Sources of radiations in the modern world include mobile phones, radar installations, transmission pillars, and microwave heaters. These technological developments have made life faster and convenient. The ability to save time had greatly enhanced human capital capacity to be more productive. Adair and Peterson studied different forms of…

The HC-05 is a serial Bluetooth module for transparent wireless serial communication. It communicates with the microcontroller using serial port [5]. It operates in the 2.4 – 2.485 GHz frequency band The HC-05 has 6 Pins. Table 3.1 Pin description of HC06 Pin Description Key to toggle between data mode and command mode, if set to high, it works as command mode, but default is data mode. RXD Receive data serially (received data will be transmitted wirelessly by Bluetooth module). TXD Transmit…