The Technology Of Communication Systems

There are many advantages to computers as it allows you to connect to the World Wide Web. It has affected everyone in this day and age as it allows you to do so many things such as connects to people around the world. People use computers to perform different tasks quickly and easily. It is very time efficient as you can email someone and they can receive it straight away but with a letter it would not only take couple of days to be received it would also cost. Many use computers to keep records and all the public services use a computer as it is a very important part of society in this era. It comes in handy as you can check on your bank and manage

Bram Stoker’s Dracula is a novel consisting of various means of how communication is conveyed between the characters in the novel. From diary and journal entries, letters, memorandums, sounds from the phonograph, telegrams, and articles from various newspapers, all of these modes of communication help tell a narrative story about the importance of high power technology that is invented during the nineteenth century. The growth of high power technology is instrumental in Stoker introducing these technologies in his novel. One important technology is the invention of the telegraph which plays an important role in the capturing of the villain in Stoker’s novel although the telegraph system could have played a bigger role in the communication of important information had the characters utilized its services more. Even though the story’s outcome is a positive one, the use of the telegraph could have possibly saved lives if not minds.

In Fig. 1, the 4 nodes are considered. Among the four nodes 2 of the nodes (Node 1 and Node 2) are primary networks and 2 other nodes (Node A and Node B) are secondary networks. The two networks act in different frequency range. The primary network acts at a range of 2.4GHz - 2.4835GHz range. The secondary network acts at a range of 433MHz - 473MHz represents the block diagram of the proposed system. The use of different frequencies increases the number of users. Node 1 and Node 2 communicate at 2.4GHz and Node A and Node B communicate at 433.9MHz. The nodes are made mobile and this causes high interference. This is cancelled by channeling where the frequencies are slotted. Multi-hop cognitive radio technique occurs when the data is transmitted from one secondary node to another which is out of range via primary node. At that time the primary node which is of MIMO antenna switches itself to the secondary node frequency and transmits the data. Wireless MIMO systems with multiple antennas employed at both the transmitter and receiver have gained attention because of their promising improvement in terms of performance and bandwidth efficiency [8].

All goals must be measurable to then measure the progress towards the successful outcome, to measure progress is to monitor and access success and achievement.

Amateur Radio, better known as “Ham Radio”, is a hi-tech international hobby that exists for personal two-way communications, experimentation, and public service that is greatly enjoyed by people from all walks of life and all corners of the world. Ham radio has been referred to as “Old school” Communications since it has been around for over one hundred years and still going strong. It has also been compared by many as the Facebook, Twitter and the first wireless phone from the old days.

This article is a survey of all aspects of communications high- altitude platforms (HAPs), this balloons and aircraft stationed in the stratosphere between 17 and 22 kilometers. The technique can be considered as a new solution for the provision of telecommunications services. This poll contains some information and benefits . The following table shows the basics of the types of high- altitude platforms and comparison of HAPs, terrestrial networks , satellites , followed by information frequency bands allocated for high- altitude platform stations . The survey concludes types of applications and services offered by this technology.

There is a wide range of communications technology that is used by the Public Services. Every Public Service uses some form of technological equipment as it is vital to carry out their duties effectively and efficiently. Depending on what job they are required to do, they will use different types of technological equipment. Communications technology being, The Police National Computer, Roaming network, Radios, Cormorant digital voice, Local Area Network and Satellite communications.

Define wireless technologies and mobile technologies. Next, determine at least three (3) ways which companies or organizations utilize such technologies to improve business efficiency.

MIMO antenna configuration is requires in spatial multiplexing. In spatial multiplexing the high rate signal is divide into low rate signals and each individual stream is transmitted from different transmit antenna which is having the same frequency channel. Spatial multiplexing is technique which is capable of increasing channel capacity at higher signal to noise

Although relatively happy with the SNA application and services by providing TCP/IP capability and internet access. The goal was met in a remarkably short time. Over the course of 30 months, DMS built a statewide TCP/IP network, began

So the transmitter can increase the output of the antennas in the direction of computers farther away or where there are more computers to allow for better coverage or throughput and decrease the output of the antennas in directions where there are obstacles.

Description of Assignment: To figure out application of waveform coding techniques for digital audio transmission and digital audio recording.

Between the telephone and the telegraph, one object sits perfectly between, claiming the award for best electrical invention. The modern day radio is a perfect hybrid between these two extravagant things. Of course, many inventions are to be thanked for leading the way to this timeless possession, and the same can be said about the radio itself. Still used today, the applications are endless.

The classic RF structure has a transmitter and a receiver. The transmitter creates electrical signals that are called a carrier signal. The carrier signal frequency is determined by the wave length. The carrier signal is modulated to carry voice by adding a contrast signal to the wave form. The receiver gets the pair of sidebands and transforms them into speech or other sounds. RF in a wireless environment can have dead spots due to line of sight issues.

Antennas – antennas serve as interfaces between transmitted/received signals and transmitters/receivers. Depending on the type, shape, and size of the transmitter antenna, the transmitted signal will have directionality and polarization properties. A receiver antenna is designed to match this directionality and polarization so that the transmitted signal can be received. Earth-facing antennas are usually designed to provide a coverage region with a particular contour shape. Typically, horn antennas and parabolic reflector antennas are used for this purpose. In some satellites, multiple transmit antennas (lens antennas and antenna arrays) are used to generate multiple “spot beams” for higher signal directionality and gain. The coverage region and the spot beams may be fixed or dynamically formed depending on the application. Some advanced experimental