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Wireless

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A handheld marine radio.

Wireless telecommunications is the transfer of information between two or more points that are not physically connected. Distances can be short, such as a few metres for television remote control, or as far as thousands or even millions of kilometres for deep-space radio communications. It encompasses various types of fixed, mobile, and portable two-way radios, cellular telephones, personal digital assistants (PDAs), and wireless networking. Other examples of wireless technology include GPS units, Garage door openers or garage doors, wireless computer mice, keyboards and Headset (audio), headphones, radio receivers, satellite television, broadcast television and cordless telephones.

Contents

Introduction

Wireless operations permit services, such as long range communications, that are impossible or impractical to implement with the use of wires. The term is commonly used in the telecommunications industry to refer to telecommunications systems (e.g. radio transmitters and receivers, remote controls, computer networks, network terminals, etc.) which use some form of energy (e.g. radio frequency (RF),acoustic energy, etc.) to transfer information without the use of wires.[1] Information is transferred in this manner over both short and long distances.

Wireless services

Common examples of wireless equipment include:

Wireless networks

Wireless networking (i.e. the various types of unlicensed 2.4 GHz WiFi devices) is used to meet many needs. Perhaps the most common use is to connect laptop users who travel from location to location. Another common use is for mobile networks that connect via satellite. A wireless transmission method is a logical choice to network a LAN segment that must frequently change locations. The following situations justify the use of wireless technology:

  • To span a distance beyond the capabilities of typical cabling,
  • To provide a backup communications link in case of normal network failure,
  • To link portable or temporary workstations,
  • To overcome situations where normal cabling is difficult or financially impractical, or
  • To remotely connect mobile users or networks.

Modes

Wireless communications can be via:

Applications may involve point-to-point communication, point-to-multipoint communication, broadcasting, cellular networks and other wireless networks.

Cordless

The term "wireless" should not be confused with the term "cordless", which is generally used to refer to powered electrical or electronic devices that are able to operate from a portable power source (e.g. a battery pack) without any cable or cord to limit the mobility of the cordless device through a connection to the mains power supply.

Some cordless devices, such as cordless telephones, are also wireless in the sense that information is transferred from the cordless telephone to the telephone's base unit via some type of wireless communications link. This has caused some disparity in the usage of the term "cordless", for example in Digital Enhanced Cordless Telecommunications.

History

Photophone

Bell and Tainter's photophone, of 1880.

The world's first wireless telephone conversation occurred in 1880, when Alexander Graham Bell and Charles Sumner Tainter invented and patented the photophone, a telephone that conducted audio conversations wirelessly over modulated light beams (which are narrow projections of electromagnetic waves). In that distant era when utilities did not yet exist to provide electricity, and lasers had not even been conceived of in science fiction, there were no practical applications for their invention, which was highly limited by the availability of both sunlight and good weather. Similar to free space optical communication, the photophone also required a clear line of sight between its transmitter and its receiver. It would be several decades before the photophone's principles found their first practical applications in military communications and later in fiber-optic communications.

Early wireless work

David E. Hughes transmitted radio signals over a few hundred yards by means of a clockwork keyed transmitter in 1879. As this was before Maxwell's work was understood, Hughes' contemporaries dismissed his achievement as mere "Induction". In 1885, Thomas Edison used a vibrator magnet for induction transmission. In 1888, Edison deployed a system of signaling on the Lehigh Valley Railroad. In 1891, Edison obtained the wireless patent for this method using inductance (U.S. Patent 465,971).

In the history of wireless technology, the demonstration of the theory of electromagnetic waves by Heinrich Hertz in 1888 was important.[3][4] The theory of electromagnetic waves was predicted from the research of James Clerk Maxwell and Michael Faraday. Hertz demonstrated that electromagnetic waves could be transmitted and caused to travel through space at straight lines and that they were able to be received by an experimental apparatus.[3][4] The experiments were not followed up by Hertz. Jagadish Chandra Bose around this time developed an early wireless detection device and helped increase the knowledge of millimeter length electromagnetic waves.[5] Practical applications of wireless radio communication and radio remote control technology were implemented by later inventors, such as Nikola Tesla.

Radio

Marconi did transmit the first radio signal across the Atlantic.

The term "wireless" came into public use to refer to a radio receiver or transceiver (a dual purpose receiver and transmitter device), establishing its usage in the field of wireless telegraphy early on; now the term is used to describe modern wireless connections such as in cellular networks and wireless broadband Internet. It is also used in a general sense to refer to any type of operation that is implemented without the use of wires, such as "wireless remote control" or "wireless energy transfer", regardless of the specific technology (e.g. radio, infrared, ultrasonic) used. Guglielmo Marconi and Karl Ferdinand Braun were awarded the 1909 Nobel Prize for Physics for their contribution to wireless telegraphy.

Electromagnetic spectrum

Light, colors, AM and FM radio, and electronic devices make use of the electromagnetic spectrum. The frequencies of the radio spectrum that are available for use for communication are treated as a public resource and are regulated by national organizations such as the Federal Communications Commission in the USA, or Ofcom in the United Kingdom. This determines which frequency ranges can be used for what purpose and by whom. In the absence of such control or alternative arrangements such as a privatized electromagnetic spectrum, chaos might result if, for example, airlines didn't have specific frequencies to work under and an amateur radio operator were interfering with the pilot's ability to land an aircraft. Wireless communication spans the spectrum from 9 kHz to 300 GHz. Henreich Hertz was the discoverer of the electromagnetic wave, it gave a platform for further inventions in wireless communication.

Applications of wireless technology

Mobile telephones

One of the best-known examples of wireless technology is the mobile phone, also known as a cellular phone, with more than 4.6 billion mobile cellular subscriptions worldwide as of the end of 2010.[6] These wireless phones use radio waves to enable their users to make phone calls from many locations worldwide. They can be used within range of the mobile telephone site used to house the equipment required to transmit and receive the radio signals from these instruments.

Wireless data communications

Wireless data communications are an essential component of mobile computing.[7] The various available technologies differ in local availability, coverage range and performance,[8][9] and in some circumstances, users must be able to employ multiple connection types and switch between them. To simplify the experience for the user, connection manager software can be used,[10][11] or a mobile VPN deployed to handle the multiple connections as a secure, single virtual network.[12] Supporting technologies include:

Wi-Fi is a wireless local area network that enables portable computing devices to connect easily to the Internet.[13] Standardized as IEEE 802.11 a,b,g,n, Wi-Fi approaches speeds of some types of wired Ethernet. Wi-Fi has become the de facto standard for access in private homes, within offices, and at public hotspots.[14] Some businesses charge customers a monthly fee for service, while others have begun offering it for free in an effort to increase the sales of their goods.[15]
Cellular data service offers coverage within a range of 10-15 miles from the nearest cell site.[8] Speeds have increased as technologies have evolved, from earlier technologies such as GSM, CDMA and GPRS, to 3G networks such as W-CDMA, EDGE or CDMA2000.[16][17]
Mobile Satellite Communications may be used where other wireless connections are unavailable, such as in largely rural areas[18] or remote locations.[8] Satellite communications are especially important for transportation, aviation, maritime and military use.[19]

Wireless energy transfer

Wireless energy transfer is a process whereby electrical energy is transmitted from a power source to an electrical load that does not have a built-in power source, without the use of interconnecting wires.

Computer interface devices

Answering the call of customers frustrated with cord clutter, many manufactures of computer peripherals turned to wireless technology to satisfy their consumer base. Originally these units used bulky, highly limited transceivers to mediate between a computer and a keyboard and mouse, however more recent generations have used small, high quality devices, some even incorporating Bluetooth. These systems have become so ubiquitous that some users have begun complaining about a lack of wired peripherals.[who?] Wireless devices tend to have a slightly slower response time than their wired counterparts, however the gap is decreasing. Concerns about the security of wireless keyboards arose at the end of 2007, when it was revealed that Microsoft's implementation of encryption in some of its 27 MHz models was highly insecure.[20]

Categories of wireless implementations, devices and standards

See also

Author:Bling King
Published:May 19th 2012
Modified:Feb 24th 2013
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Voting Poll
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There is no such thing as time
Posted by Bling King

    

     Upon further ponderance I have come to the conclusion that time does not exist except in the law of physics. I have come to this conclusion through the observation of how things change and why they change at the pace in which they change. To me it seems that every change that takes place  in the universe is not dictated by time but rather physics. It is the law of physics that dictates the rate and speed at which all things change. For example if you have a car  that is traveling at 100 miles an hour the speed at  which the car travels is all dictated by physical changes and therfor controlled by the law of physics..Therfor it seems that for any change to take place all you need is physics and the law of physics that governs the physical changes. Time does not need be a factor and bears no relavance. As long as we have the law of physics everything will happen in accordance with those laws.

The composition of time
Posted by Bling King

   

    Time has 3 components. A front a middle and a rear. In the front time has what appears to be something of perspectual perspectualness that will move things forward at a set forth proponent. This part of time is easy to see and witness. However it is not easy to predict at which point time will make forward momentum happen. It would seem that this forward momentum is always in inactment but I would disagree with this. To me it seems more as if time interacts with things on its own accord leaving somethings unchanged for long standing periods of time. An example of this would be how time occasionally interacts with the speed of light. The speed of light remains constant but occasionally time will manifest itself into the equation and make modifications of the speed that light travels. For instance light will move forward forthwittingly at a billion miles a second but if it encounters any kind of resistance then time will inject itself and change the speed at which it was moving. Which leads me to the assumption that in order for time to inject itself into any equation a proponent has to take place that makes a physical change that would cause time to interject itself. If no physical change takes place than time has also not been a factor.

    The middle proponent of time is the area in which time is manipulating  the change that takes...Read More

👄What turns me on
Posted by Bling King

    I get turned on by some funny stuff. I'm not really into like full blown kinkiness or at least I wouldn't consider myself to be a kinky person but I do have a few fetishes. Some of them are a little out of the ordinary. For instance I have this one fetish about being tied up  and thrown in the ocean and then rescued by a mermaid. I think this fantasy comes from when I was a kid and I used to dream of mermaids and always wanted to meet one. Well one day its gonna happen. Now don't go telling me mermaids don't exist. You don't know cause they are in fact real and as soon as I meet one I will prove it to you. As far as some of my other turn ons  I guess what really gets me excited is people who  tell other people to shut the fuck up. I love when a woman just looks at a man and tells him to shut his mouth. To me thats a big turn on because the woman seems assertive like a dominatrix or something. If she will be assertive in a conversation she will be assertive in the bedroom or so I  would like to believe.

Time is a dialectable derelict
Posted by Bling King

To fathom the fortrighteousness of time one has to contemplate the personification of forthwittial forthwittil. Time forthwittingly will only listen to the commands of its on inner personification to which there is no directional direction or so it would seem but on further inquisitories I have come to realize that there is a forthwittingly forthwittal of which time has pronounced and those commands seem to speak to the nature of to which time corresponds. To review these pronouncements for your own bemusement look at time as if you had it captured it  in a bottle. What would happen? We know on the inside of the bottle time would force the inner workings of the bottle to correspond to times diabolical commands. Causing everything to change to times everlescent rules. however on the outside of the bottle things would not change, everything would stay in constant neutrality or would it? The question remains if there was no time would things still be allowed to happen and if so at what pace and what would dictate the pace at which things would change. There seems to be no rule in place for the dictation of the pace change which takes place. So it would seem that time has decided that factor somehow within itself. There could be a correlation at which things change and the pace being dictated by physics and the amount the physical world can be allowed to change within its own accord of set boundaries. To actually find...Read More

Free from time constraints
Posted by Bling King

 

 

 

There was a time when time did not matter. The thing that was an utmost relevance now was of no matter. The diffrence it made seemed miniscule and now it is constantly dictating everything that takes place before me. What is this thing that controls and makes everything manifest itself to its constraints and why and how does it do this. Time is nothing but the utmost miracle before us. Something that has always had to exist for anything ever to take place. There is no changing its course there is no variance in its absolute everlasting existance. To control time would be the utmost  crown jewel of all accomplishments if indeed it could ever be controlled. The only way I ever see time being manipulated to change its values is to speed up everything that time has interacted with. In order to do such a thing you would have to understand the nature of the objects in question and how they are effected by time. For instance a speeding car will slow down in time without constant force being distrubuted by the engine. To slow down the car one only has to take their foot off the accelarator and gradually time will do the rest but if you could freeze time at the speed at which the car was traveling then time would not  exist because the...Read More

the truth about time
Posted by Bling King

        I have looked at time many times and I have noticed a few components. There is a precise proponent that ushers in a manifestation. Whenever something new is going to happen you can look at that event which is about to take place and precisely predict exactly when it has started. Once you realize a manifestation has taken place you can precisely predict its out come. If you know that a manifestation has started to take place then you will know you are being guided through the realm precisely by the forces of an enlightenment. Throughout time this manifestation will remain constant starting with a beginning and an end and ending in a preconcieved enlightenment. Sometimes an enlightenment can take weeks and some times an enlightenment can take centuries. It depends on how many times that enlightenment has been benounced to the realm. 

 

nothing
Posted by Bling King

I suspect a suffcient of sufficence of suffiacantel suffiance of suffiance of absurdity of absurdanace. In all actual actuality there is an  actual actuality of actualityness in retrospect to the retorospective respect in which every person who has an intellectual intellect can see that the world is a prominance of prominance in which the order will reside as long as the order is maintained. Once that order is relinquished chaos will ensue. For chaos to be a calamity there only needs to be a perspectual perspective of perspectance that escalates the chaos to that height. What would cause that is a person or persons in the realm of the realmatical realmatics looking beyond thier own existance to the existance of there forfathers to see what has become of thier existance. If you look at your own existance for what it is you will see that it is neither logical nor illogical for it makes all the sense of a sensimatical sensematic. As long as you have a reason for your own existance then it is fruitful for you to exist. Once that reason or reasons are gone you will no longer care whether it is you live or die. In the realm in which we live is a prospectus prospectant of prospectantin which all will ensue. To change the prospectus prospectus you need to look to the realm and see what the prospectus prospectant is and manifest it to your own liking. My...Read More

The conclusive conclusion
Posted by Bling King

In all actual reality the realm is manifested of certain procedural procedures that come forth frequently to forthrightous forthrightenous. In the place of predicament I have found that I can properly place things in the procedural sequence unbenowst to people of the realm. In order to conflict the conflictions you have to equate the equation of equationalness in to proper equations. Very simple but also very tedious. You do this by equating the equation into percise preciseness. An example of an equation would be a placement of perdicament of a certain event in which you wish it to be. The next manifestation I could manifest is a manifestual manifestation of manifests of a sequance of certainal circumstances. Put together a sequence by asking the sequence in order to manifest itself and then tell the manifestations to happen in frequence in which they will unfold.

The Unattainable future
Posted by Bling King

     If the future is a grain of sand and its falling through an hour glass nothing in the world can stop it. It will eniquivaocalby blind as to where its going when it comes to its rest it has befallen its fate and will remain where it lay for an eternity knowing nothing about itself or it's surroundings. I am that grain of sand. Nothing ever can change my destiny for only time here makes a diffrence.. To benounce the future is the only way to change ones fortune. The time it takes to make an equivical change remains the utmost mystery of the universe.

🤯In the eyes of myself
Posted by Bling King

 

 

There where three men. All who seemed frightened. They stood on the edge of the canyon looking on as a fourth man tumbled to his death. We could have saved him said one of the men. He should have saved himself said another. The third man just look at them bewildered and brought a handgun to his own head and pulled the trigger. Blood spattered. The two men watched as he slumped to the ground. The first man screamed and the second threw himself to the side of the man on the ground. Why?!! he screamed. It was the only sound heard. Sobbing he looked at the man standing and said you did this! You and your frigging righteous speech about the lives we leave and the sacrifice we must make. Your the devil. I am not the devil said the standing man only the truth. The truth about what? The other man screamed. Your life he said and he jumped.

The man heard a ringing and he sat up slowly. It was over the dream but his thoughts where still on the side of the canyon. How did this happen. How did it all just fade away? The dream came and went in an instant leaving his mind boggled and his eyes heavy. I knew I was there thought the man but how? It was all to familiar the...Read More

The story Elijah and Ellen
Posted by Bling King

The story of Elijah and Ellan. This is the story of Elijah and Ellan. Ellan is a beutiful temptress and Elijah is a dutiful servant of Ellan's. Together the pair fell in love and soon became a duo of in excessible excession. They frolicked in the sun under the rare occurance of rain they took shelter in the arms of each other. One day while hiding from the glares of the sun under an oak tree that provided an abundance of shade they looked into each others souls and realized there where no people suited for each other then the two of them where suited for each other. They basked in the notion that they where the most two compatible souls on the planet. As they where thinking this a giant unforseen acclamaited acclamation occurred. The planet began to tremble and shake beneath them and the stars came out. The sun hid amongst the clouds and everything from start to finish began to take shape. There where huge explosions and giant surges of wind and rain. The two began to run for their shelter knowing at the exact moment the trembling and violent agressions of unacclaimated weather started that they most likely wouldn't make it to see another sunrise. The planet was exploding with molten lava and the tempertures where unbearable as for the two of them could remember they had never seen a winter climate and didn't expect they ever would. The planet had been warming out of...Read More

today was a day of dismal despair
Posted by Bling King

Things have gone down hill drastically now for a very long time. We seem to be some what defeated but yet i know we still have some power and prominance. We are fighting an up hill battle and there is no way forward from here from what i can see. We are trudging along a path that goes nowhere.

⚔️The Greatest Warrior of All Time
Posted by Bling King

 

 

Today i conquered and beat all adverseries there where to beat. Tomorrow new adversaries will arise. I will be ready, there is never a shortage of enemies who wish to dethrone me from the top of the world. I didn't get here by being passive and yeilding to the oppostion. I got here by defeating them both mentally and physically and in entiriety.

In a time of desilute despair
Posted by Bling King

     There was a time when I was in desilute despair. The only thing I had was me myself and I to fall back on. I looked at the person who was my opponent and I knew one of  us was going to die and I was going to do everytrhing I could to make dam sure it wasn't me. I pulled my six shooter from its holster and aimed at the guy looking at me  about 30 yards away. He also went for his gun and in lightning speed he was laid sprawled out on the dirt bleeding and moaning. I had heard a shot but new that it had come from my own gun. He never even got a shot off. I was unscathed and again undeafeted. Anybody who ever tried to kill me was dead and their where over 30 who had tried and failed to kill yours truly.

Gravity
Posted by Bling King

Gravity is the force of nature that pulls cellestrial bodies toward one another. The cause of gravity is the enertia of a bodies movement through space and time. This happens by an object preconcievably traveling through the cosmos at an alarming rate of acceleration. The faster an object travels the more enertia it will build up and then will therefore have a greater ability to move. the more it moves the more other objects will cling to it. the way this can be proved is by taking an object and hurtling it towards another object the two objects would collide do to the enertia pulling them towards each other. Thy would not stay on their current trajectory but their paths would alter towards one another in a greater force than their initial gravitational pull. the best test to accomodate this theory would be tow baseballs flying through the air at speeds over one hundred miles an hour. The baseballs would not interject themselves with one another normally but at this speed would do so do to the balls enertia pulling them towards one another.

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