The Pros And Cons Of Cognitive Radio Technology

1540 Words4 Pages
bulb-icon

Recommended: Pros and cons of cognitive radio

According to survey of Federal Communications Commission (FCC) in 2002, it has been found that spectrum access is more significant problem than physical scarcity of spectrum. With many technological advances in the field of wireless communication and 3G, 3.5G, 3.75G and 4G technology already being employed Multimedia Broadcast and Multicast Services (MBMS) demand has tremendously increased and with the standardization of MBMS it has gained significant interest in the market. Multimedia content 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 since they cannot be utilizing by the users other than the licensed owner at moment. Orthogonal Frequency Division Multiplexing (OFDM) is one of the widely used technologies in wireless communication systems which have the potential of fulfilling the requirements of cognitive radios inherently or with minor changes.

1.2 Basic of Cognitive Radio (CR)
Cognitive radio (CR) concept was first proposed by Joseph Mitola III in a seminar at KTH (the Royal Institute of Technology in Stockholm) in 1998 and published in an article by Mitola and Gerald cognitive radio is an emerging technology that can be programmed and configuring dynamically. Its transceiver is designing for the use of best wireless channels in its vicinity. Cognitive radio automat...

... middle of paper ...

...rum sensing which is analyze the situations of several factors in the external and internal radio environment (such as radio frequency spectrum used by neighboring devices, users behavior and network state) and finding the optimal communication protocol and changeable frequency or channel accordingly. It is also known as channel estimation.

1.5 (c) Spectrum Decision Making

Spectrum Decision Making calls for reconfiguration for the channel and protocol required for constantly adapting to mobile changing environments and adjustment of output power or even alteration of transmission parameters (such as modulation formats (e.g. low to high order QAM), variable symbol rates, different channel coding schemes) and characteristics by the Cognitive radio devices. CR should be able to use multiple antennas for interference knolling, capacity increase or range extension.

Show More
Related

  • Telecommunications Act of 1996

    1285 Words  | 3 Pages

    The Telecommunications Act of 1996 can be termed as a major overhaul of the communications law in the past sixty-two years. The main aim of this Act is to enable any communications firm to enter the market and compete against one another based on fair and just practices (“The Telecommunications Act 1996,” The Federal Communications Commission). This Act has the potential to radically change the lives of the people in a number of different ways. For instance it has affected the telephone services both local and long distance, cable programming and other video services, broadcast services and services provided to schools. The Federal Communications Commission has actively endorsed this Act and has worked towards the enforcement and implementation of the various clauses listed in the document. The Act was basically brought into existence in order to promote competition and reduce regulation so that lower prices and higher quality services for the Americans consumers may be secured.

    Read More

  • The Benefits of XM Radio

    1492 Words  | 3 Pages

    Over the years, many people all over have listened to the radio for entertainment and information. Radio supplies news, sports, music, talk, and many other options with great ease. However, since television has become so popular lately, people look to it as an alternative to radio for the previously stated options. The reason for this can be linked to the redundancy that radio has encountered by not offering anything new and exciting for people to become interested about. Now, XM radio has solved this problem by giving people something new to look forward to by offering their services to anyone who wants to try something new. XM Radio uses satellites positioned in space to allow people to listen to the radio across the United States without having to be bothered with changing stations. This luxury has gotten consumers and analysts very excited and has been receiving a lot of hype in the media lately. The advanced methods of broadcasting will supply XM Radio with more appealing features to listeners than existing entertainment. As a result, those who are bored with the current condition of radio entertainment may use XM more than FM and AM radio.

    Read More

  • Clear Channel Essay

    8222 Words  | 17 Pages

    INTRODUCTION      Would people be willing to pay $12.50/month for commercial free radio beamed right to their car or home. Well two companies and many big investors are betting about $3 billion dollars that people are willing to do just that. In 1997, the Federal Communication Commission (FCC) granted a portion of the S-band spectrum for satellite radio and two companies purchased use of these bands and started the only two companies competing in the satellite radio business today, namely Sirius and XM. Analysts like William Kidd of CE Unterberg Towpin, predict satellite radio will generate about $10 billion a year in revenues by 2007 (McClean, 2001).

    Read More

  • What Are The Pros And Cons Of 3G And 4G Technology

    1410 Words  | 3 Pages

    Compare the pros and cons of 3G and 4G technologies to determine the best uses of 3G and 4G technologies in today’s applications.

    Read More

  • Wireless Sensor Network

    3051 Words  | 7 Pages

    6) Michele Zorzi, “Wireless Sensor and networks: Recent trends and Research Issues’’, University of Padova, Italy, IEEE communication society, Poland, April 28-30, 2008.

    Read More

  • Identifying and Tracking Tags with Radio-Frquency Identification

    1046 Words  | 3 Pages

    Modulation is a process of changing the characteristics of a radio wave to encode an information signal and sending that information to the other end. Readers send a continuous radio wave and the tags modulate this base band signal by adding encoded information into it, which the readers decode. Modulation schemes used for RF communication are amplitude shift keying (ASK), frequency shift keying (FSK) and phase shift keying (PSK). The modulation technique’s choice is based on the power consumption, reliability and available bandwidth. ASK is most commonly used in load modulation and PSK for backscattering.

    Read More

  • The Impact of Digital Signal Processing

    2171 Words  | 5 Pages

    The uses of Digital Signal Processing in communications has become so large scale that nearly any form of analog communication is considered obsolete. Today, nearly any form of communication used, aside from verbal communication, relates to Digital Signal Processing. Some of the more prominent uses for DSP in communications are; local area networks, cell pho...

    Read More

  • Synchronous and Asynchronous Mode

    905 Words  | 2 Pages

    Analog communication employs continuous transmission of an electromagnetic wave form that varies in frequency and amplitude.

    Read More

  • The Transition from Analog Television to Digital Television

    1227 Words  | 3 Pages

    The digital evolution began to transpire on November 1, 1998. Since then there have been many other forms of digital technology adopted by our society and digital television quite possibly is next. “The speedy conversion to digital technology will have profound interest benefits, permitting efficient spectrum use, optimizing the development of new technologies and services to consumers, and fostering diversity and competition(FCC).

    Read More

  • How Has Cell Phones Changed Us Socially?

    892 Words  | 2 Pages

    Print. The. Gordon A. Gow, and Richard K. Smith. Mobile and wireless communications: an introduction, McGraw-Hill International, 2006. Print.

    Read More

  • M-commerce

    455 Words  | 1 Pages

    One of the latest advancements in wireless data. It is used in GSM (Global System for Mobile Communications) for transferring data in packets.

    Read More

  • Advances in Wireless Technology

    943 Words  | 2 Pages

    The world has gone through a lot of changed as time passes by. With advancements in the technological field people are can communicate with ones from around the world without having to even lift a finger. To make things more efficient and more cost saving industries have made technology wireless. Wireless technology gives people the chance to get up from their stationary computer, or cord phone and able to freely move without restrictions. The IT, or Information Technology has become a standard and very critical part of today’s society. Wireless technology came from the basic just cellular usage to sensors in the medical field. Wires are now a thing of the past in today’s world with forever revitalizing technology.

    Read More

  • Radio Waves

    826 Words  | 2 Pages

    Frequency modulation is, of course, used on the FM band. And it is used for

    Read More

  • Communication Technology

    1046 Words  | 3 Pages

    People in the present society have turned from the use of the old means of communication to the more advanced and technological ways of communicating. Technology has made it easier for people to communicate in a faster, efficient, and cost saving means through the introduction of the communication channels. The world has turned out to be the centre for technology with different technologies emerging daily as the people continue to develop from time to time to cope with the growing technology. The benefits of adopting the communication technology are explained in this article which shows why people do not function without technology.

    Read More

  • The Future of Radio

    1605 Words  | 4 Pages

    During the increase in popularity of radio, Arthur Edwin Kennelly said (1926) "through radio I look forward to a United States of the World. Radio is standardizing the peoples of the Earth, English will become the universal language because it is predominantly the language of the ether. The most important aspect of radio is its sociological influence." Kennelly was foreseeing the potential power and impact that radio would soon come to have. By the late twenties, we would see radio become quite the sensation in the household, and this sensation would continue to prosper even through the Great Depression with aid of soap operas and popular programs such as the Lone Ranger. Radio would see a decrease in popularity during the rise of the television. Eventually, radio would find itself a niche in the media market, allowing it to continue to prosper. This would be due to the help of Frequency Modulation radio broadcasting and localization. Radio stations were now able to offer more local content than radio, touching on local news, weather, and advertisements for local businesses all at a higher sound quality. That joined with a symbiotic relationship with the recording industry and the start of formatted radio programs, the two industries were set to last for almost another fifty years (Adams, n.d.).

    Read More

More about The Pros And Cons Of Cognitive Radio Technology

Open Document