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Wireless Communication
This rapidly growing segment of the communication industry has the potential of providing high-speed high-quality information exchange between portable devices. Wireless communication enables several applications including multimedia Internet-enabled cell phones, automated highway systems, smart homes and appliances and videoconferencing, among others.
4,616 Questions
How can you trace a cell phone number from Mexico?
You can't; due to many people been kidnapped by finding their phones and looking their addresses, most home phones are kept secret. Also white pages have ceased to be published duo to this same reason.
Advantages of Frequency Division Multiplexing?
FDM is the technique used to shift several base band signals to different higher frequencies, thus creating, in effect, a larger channel bandwidth because several signals can be sent over the same medium at the same time without interference with each other.
What age group uses the cell phone the most?
13-19 would be the correct age group that apple iphone users are.
Is stored mobile phone numbers on sim is better than on mobile phone?
Phone number are better stored on sim because if are getting a new phone or something happens to it you don't have to get all your numbers back on your phone again.
Yes, stored numbers on sim are better than phone memory. because whenever you would change your sim, you would get these contact number on your new phone. this is useful because when you upgrade you can easily transfer your numbers on to your new one
Can you fry an egg with a cell phone?
No. This was attempted by a viewer who guest starred on the UK TV show "Brainiac" aired on Sky1.
The guest viewer asked Brainiac the very same question and was invited on the show to test this. Two cell phones were tried, they were phoned but had no result. Then eventually with roughly a dozen cell phones, all phoned at the same time and still with no result.
So no, it isn't possible to cook and egg with cell phones. Try boiling some water.
Is there a certain type of cell phone or service on the cell phone you have to have to use twitter?
Nope you acn use it online at www.twitter.com
What memory card does the Blackberry Pearl 8100 mobile phone use?
The Blackberry Pearl 8100 accept the microSD format of memory card. There is no memory limit to the accepted card.
Cards are currenly available in sizes up to 8GB of storage, but any cards above 4GB are in the SDHC format which allows for higher access speeds.
Why do cell phones have very short antennas?
Cell phones use radio waves travelling at the speed of light with a typical frequency of 800 MHz, which is ten times greater than FM radio frequency. Due to shorter wavelengths, the cell phones use very short antennas.
What did cell phones look like 5 years ago?
They look pretty much like they do now. The iPhone came out 6 years ago and since then, all phone have been pretty much a big screen. Before the iPhone, cell phones had small screens, physical keyboards, no touch screen, and internet was pretty lame on them. The "smart phone" of that time was pretty weak compared to how much phones have changed.
How many E1 lines does PDH has?
There are 63 e1's in sdh STM-1 = 63 x E1; STM-4 = 63 x 4 E1; STM-16 = 63 x 16 E1; STM-64 = 63 x 64 E1.
What online website shows cell phone reviews and comparisons?
One of the easiest ways to find cell phone comparisons is by using a comparison website, such as moneysupermarket.com. They have a whole section devoted to cell phones to help you find the best rates for your area.
Use of mobile phone in college campus is good or not?
mobile phones should allowed on the college campus,but we should use it properly.But camera phones are not necessary in colleges so it must prohibit . But ordinary mobile phone is helps to increase our security any where.When we trapped in an accident mobile phones help us to overcome it through a call or an SMS from mobile phones. So mobile phone is an essential thing for college students.
Why do people buy cell phones?
Cell phones are so readily available due to high public demand for the product coupled with the ability to secure new customers with annual contracts. The big money is made through the service, the phone works as consumer bait. The basic supply and demand theory applies to this question along with profitable customer aquisition.
Why does my cell phone restart automatically?
menu>setting>sync and backup>create backup>and goto memory card and backup files and click it and retore
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Boost mobile has two types of service, CDMA and IDEN. So technically its CDMA and TDMA, they do not have GSM service.
New inventions in the electronics and communication field?
Technology has really shaped the way people communicate either for personal or business use. Take for example how fax transmission has improved. The usual way to transmit a document is using a traditional fax machine. Now you can do it either by using a service called internet fax or by email!
in the new era telecommunication plays a wide role ....the use of mobile phones has been increased ..it has been used by even the below poverty line people also...
How does a cell phone jammer work?
cellphone jammers or a yapper zapper overpower the cell phone by transmitting a signal on the same frequency and at a high enough power that the two signals collide and cancel each other out. Cell phones are designed to add power if they experience low-level interference, so the jammer must recognize and match the power increase from the phone.
Cell phones are full-duplex devices, which means they use two separate frequencies, one for talking and one for listening simultaneously. Some jammers block only one of the frequencies used by cell phones, which has the effect of blocking both. The phone is tricked into thinking there is no service because it can receive only one of the frequencies.
Less complex devices block only one group of frequencies, while sophisticated jammers can block several types of networks at once to head off dual-mode or tri-mode phones that automatically switch among different network types to find an open signal. Some of the high-end devices block all frequencies at once, and others can be tuned to specific frequencies.
To jam a cell phone, all you need is a device that broadcasts on the correct frequencies. Although different cellular systems process signals differently, all cell-phone networks use radio signals that can be interrupted. GSM, used in digital cellular and PCS-based systems, operates in the 900-MHz and 1800-MHz bands in Europe and Asia and in the 1900-MHz (sometimes referred to as 1.9-GHz) band in the United States. Jammers can broadcast on any frequency and are effective against AMPS, CDMA, TDMA, GSM, PCS, DCS, iDEN and Nextel systems. Old-fashioned analog cell phones and today's digital devices are equally susceptible to jamming.
The actual range of the jammer depends on its power and the local environment, which may include hills or walls of a building that block the jamming signal. Low-powered jammers block calls in a range of about 30 feet (9 m). Higher-powered units create a cell-free zone as large as a football field. Units used by law enforcement can shut down service up to 1 mile (1.6 km) from the device.
What is the science behind mobile phones?
Solid state micro-circuitry and microwave transmission and reception.
The fundamental principals are the venerable principals of radio, including microwave transmission and reception, modulation and demodulation. To these engineers added the principals of detection and estimation theory, or simply signal processing, which allowed efficient use and sharing of the scarce resource of the electromagnetic spectrum. Next the developments in micro-circuitry and digital processing including software made networks and mobile phone instruments practicable. The principals of communications, that is signaling through layered architectures, are essential to the success of modern cell phone systems.
Can you track a cell phone from your PC?
i found it as i had put the full lookout on my dads phone
and it linked to plan b
but it is meant to be a last resort
using this app: https://market.android.com/details?id=com.lookout.labs.planb.
for more information visit this website
http://track-android-phones.blogspot.com/
Interference - If intermittent and difficult-to-diagnose wireless communication errors occur, interference might be the culprit.
Is long distance texting free when you have free unlimited texting?
If you have unlimited texting in your plan than you should be able to text all you want without any extra texting charges unless you are texting someone that doesnt have the same carrier as you.
If you have Verizon then it is 10 bucks a month and you get unlimted Verizon to verzion.
How can you use solar energy to recharge mobile phones?
You can buy ready-made solar panels fitted with connectors for mobile phones. Simply plug it into the handset, and stick the solar where it will get most daylight. (usually a window). The panel generates DC power, which will charge the phone for free !
What is the amount of cell phone use people use day to day?
Basically, people use cell phones to connect with others anytime and anywhere through calling or texting. But with the many features that cell phones offer today, this device is also being used for entertainment with the games and music it offers and to enhance safety with its emergency response system as such. Cell phones are being operated through its buttons.
