spectrum. One alternative solution to this is the use of alternate technology. Cognitive radio (CR) is an available option. Cognitive radio concept was introduced by Mitoala [2]. CR in general can be defined as the usage of licensed spectrum by an unlicensed user when the former is not using it. This is called as spectrum hole. CR uses these for transmission of data/voice [3]. CR as defined by Haykin is: “Cognitive radio is an intelligent wireless communication system that is aware of its surrounding
requires more bandwidth, storage capacity and few applications pose tight delay constraints, so the need to optimize the utilization of spectrum is felt all the more. The available radio spectrum is limited and it is getting crowded day by day as there is increase in the number of wireless devices and applications Cognitive radio technology proposed tempting solution for spectral crowding problem by introducing the opportunistic usage of frequency bands. Which are not heavily occupied by licensed users
RECONFIGURABLE RADIOS NASA reconfigurable radio communication to solve the problem of small data transfers over small distances. In 2014, the Malaysia Air Flight 370 containing 239 passengers on board, went missing somewhere in depths of the Indian Ocean, and out of radar range. The search for the plane lasted almost three years, but after discovering they had been searching in the wrong places, and the search had cost over 160 million Australian dollars, it got called off on January 17th. (&
Radio “Radio” is a movie released in 2003, starring Cuba Gooding Jr. and Ed Harris. It is based on the true story of James Robert Kennedy, also known as Radio. Radio was a mentally ill, African American who lived with his mother and enjoyed spending most of his days pushing his shopping cart through the streets of Anderson, South Carolina. Radio got his name because of his love for old, vintage radios. At the beginning of the movie, Radio is pushing his cart through the street as a man stares at
ever. Also I will talk about Wired communication which is one of the older technologies but now we have several different types of media forms on wired communications and they all do a different job. Wireless Technologies could be satellite links or Radio communication. They all have good and bad points to discuss. Wired Technology could include twisted pair, Fibre optic or broadband over power lines. Wireless communication has transformed the way we communicate to each other.
Click. On goes the television, off goes your mind. Click. Boring. Click. Seen it. Click. It will do. Barbara Ehrenreich’s argument that television is corrupting social society is valid for the once great mode of communication has become a couch potato breeding machine. The remote one holds in their hand not only controls the telly, but also their mind and actions. Barbara Ehrenreich characterized people in the 1980s in her book, entitled The Worst Years of Our Lives, as “couch potatoes”(28) that
There was a time when many reporters were content to give just entertainment to the public. Cosell believed that sports needed to be changed. Richard Lapchick viewed Cosell as a seminal figure in the industry. “While people may have wanted the escape sports provided, they also needed to hear the principles he spoke about” (Shapiro, 1995). Some of Cosell’s former colleagues admired his ability to elevate any event he covered into a major story. One of those former colleagues, Herb Granath, said
Vin Scully is considered the greatest broadcaster of all time to most Americans. He was the TV sportscaster for the Los Angeles Dodgers for 67 seasons and is considered the “voice of summer” to those living in Southern California. He also broadcasted several other sports on television, including football and golf and he has won many awards for his broadcasting career. Vin had a very sad but inspiring childhood. Vincent Edward Scully was born on November 29, 1927 to Bridget and Vince Scully in the
New Technology of the 1920s In this day and age, it is difficult to imagine a world without radio, television, or penicillin. These are simply common things used everyday by people from all different walks of life, but many of these seemingly common technologies were not around prior to the 1920s. Many of these 1920s inventions still have a large impact on the daily lives of people around the world today. Without these inventions, many people could not live the same lives they do now, and many people
Radio Configuration Drones use Radio Frequency (RF) transmitters (TX) and receivers (RX) to send the information used to control the drone. Inside the radio, transmitters encode the digital data from the movements of sticks and switches into an electric current, which gets sent through wires to the radio’s antenna. There, the electric currents generate electromagnetic radiation, or radio waves. Waves with different amplitudes (heights) or frequencies (durations) carry different messages. (FM and
Our world has changed, we have changed. We are now virtual. The people of today are spending more time staring at a screen than anything else in their lives. According to data journalist Felix Richter, Americans are using electronic media for over eleven hours a day (Richter). And with the National Sleep Foundation recommending up to nine hours of sleep for adults per day, this leaves just four hours for people to shower, eat, socialize, read, think and do everything else that humans do on a daily
American society as a whole was more informed about current events, due to easy access of newspapers and radios in the 1920s, which helped in the spread of conspiracies about Earhart’s disappearance. the 1920s the first radios were used recreationally by the average American and eventually sold 5 million sets a year by 1929 (Musser). Despite high numbers of radio sales, there were many Americans who prefered to read news from newspapers (Musser). The success of the first “talkie newsreel” of Charles
News programmes have many key conventions which makes them distinctive in comparison to other types of programmes. One of the main conventions is that news programmes often feature presenters or anchors. This is a very common convention and is featured in most, if not all news programmes on TV. The presenters are the people who sit in the studio and read the news reports to the audience at home. An example is on BBC News. The presenters dress and speak very formally and they talk about hard news
Inspired by a true story, Radio Kennedy known as Cuba Gooding Jr. played in a sports illustrated movie by Gary Smith called “Radio”. James “Radio” Kennedy is a mentally disabled local man that became the team mascot and cheerleader during the first season with the football team (Rozen, 2003). Radio often wondered around the town of Anderson, South Carolina with a shopping cart filled with treasures. He walked around the High School of Hanna and watched the sport events, mainly football. He did not
Company Description Rogers Communication Inc. is a domestic dominating communications and media company, which was founded in Toronto, Canada in 1960s. With around 50 years of development, Rogers provides customers with various kinds of services such as wireless, cable television, and Internet connectivity. It had also become one of the leading providers of high-speed Internet in Canada recent years, which delivers the service for around 2.01 million customers1. Rogers has achieved a position of
In 1956 television was introduced in Australia. In just as little as 3 years it has skyrocketed and was already able to sustain itself. The introduction of television in Australia changed Australian’s in so many ways, one quite significant one being the way Australian’s chose to stay home over going out to the movies. The introduction of tv in Australia made many australians a lot more aware of American culture and exposed them to it more than they had been ever before. There was no denying that
The Effects of Watching Too Much TV Television has become one of the major entertainment providers in our modern life. It sits in the living room of about almost every home in the world and it is the one thing that most people like to come home to after a long day of work or school. Not only does it give us something to laugh or get scared at but it also provides us with valuable information about what is happening around our local community and around different places in the world. But, as good
The term mass communication was coined in the 1920s, with the initiation of countrywide radio networks, magazines, and newspapers which is has been spread among the general public. The delivery of information to a nationwide variety of people remains the main purpose of mass communications. Even though today mass communications are widely used as primarily because it is a satisfying exercise which may reward a person or company with brand and name recognition, directly increasing credibility. Regularly
The invention of the telephone was approximately 120 years ago. It can be considered one of the best inventions in the world. This device was created in 1871 and uses electrical signals to allow sound to travel long distances. It has changed and evolved from the first telephone that was based on the telegraph to nowadays where we have smart phones. Because of this invention, telephone companies were created. This device helps and permits people to communicate from one place to another, even
RECIPROCITY THEOREM If voltage is applied to terminals of an antenna A and the current is measured at another antenna B, then an equal current (bot amplitude and phase) will appear at terminals of antenna A if same voltage is applied to antenna B. Application of reciprocity theorem Equality of Directional Patterns Statement: 'The directional pattern of an antenna as a receiving antenna is identical to that when used as a transmitting antenna." Proof: The above mentioned antenna theorem is the outcome