Cell Technology

This kind of low power stations in both directions, the radio base of the river basin is used in several small areas (cell) divides. Phones constantly searching for the nearest base station, and hop from base station to the base, if the user is working. This strategy is the replacement of base stations and distributed to many high-power base stations with low power consumption throughout its coverage allows more customers and reduce demand for energy for the treatment of mobile phone.

Reduce the amount of energy needed to conduct the interview on the radio has allowed manufacturers to produce phones much less. Despite the progress of solid state circuits played an important role in reducing the size and weight of mobile phones, the demand for electricity, the need for bulky, heavy batteries power in conjunction eliminated.

The first mobile phone was named general use analog AMPS. ASD A similar pattern frequency modulation (the same model of FM radio). When cellular was introduced scheme of FM modulation / demodulation is a commodity, and if it was the cheapest means of introducing cellular. Digital cellular is not up to the 1990's, when the DSP-platform, the price is enough to virtually all of its digital telephone to create profitable.

How it works:

* Scan channels: an analysis of the nearest cell's happening in your area, you can get the best signal, because you get your position yet.

Message *: Phone sends a short message to a cell site of MIN, ESN and the number you just enter the call reviewed.

* Purpose Source: After checking the information above, and your number is a message to your cell phone to tell him where the conversation. Talk: phone calls on this channel and starts.

Mobile phones have become easily accessible, as it can fit in most pockets. (Pun!) Decent mobile phone can receive Rs 5000 / - and, of course, there is no limit if you want expensive models. Another thing, it should be noted that the price of phones down, because the market is becoming more competitive.

Klein is going to, at least where mobile phones. New single small the phone is called "candy bar" model, a reference to its shape. Many weigh less than 200 grams, including batteries. Familiar squat flip phone - those who are communicators of the former "Star Trek" - is also ultra-light to open.

Batteries less well. New Nickel-Metal Hydride (NiMH) batteries are smaller and lighter than nickel-cadmium (NiCd), but often provide electricity to about 40 percent less. The latter are the lithium-ion (Li-Ion) batteries and lithium-polymer, which are high quality.

Cellular Industry Association (CTIA) is a standard for performance testing mobile phones. ISI, as the press, it also has the seal of approval.