why should a CDMA mobile phone be preferred to a GSM mobile phone? which is better for a customer?

Answer 1

HELLO BUDDY


GSM Vs CDMA

Cellular is one of the fastest growing and most demanding telecommunications applications. And the continuous advancement in this technology has provided many options to a consumer. Today, the two alternatives that face the mobile world is - GSM and CDMA technology. First of all, Let’s comprehend the meaning and functionality aspects of these technologies.
Global Service for Mobile Communications (GSM)

During the 80s, when the cellular system was introduced, each nation had its own system. As a result, a couple of problems arose. Firstly, the equipment was limited to operate only within the boundaries of a country and secondly, the market for mobile equipment was also limited. In order to overcome these problems, the conference of European Posts and

Telecommunications (CEPT) formed the Group Special Mobile (GSM) to create a common European mobile telephone standard.
The GSM later came to be known as Global Service for Mobile communications (GSM).At the end of 1997, GSM was made available in more than 100 countries. Today it has become the global standard in Europe and Asia. GSM operates in 900-MHz – 1800MHz. If one has to connect to the specific service provider in different countries, GSM-users simply need to switch Subscriber Identification Module (SIM) cards. As per GSM technology, a mobile unit logs on to the network after being switched on. The mobile unit tries to contact a nearby BTS, which then transmits all the frequencies of the neighboring BTS’ to the mobile unit, which identifies the frequency on which the reception is the best and passes on the information to the BTS.
The BTS then transmits the information to the BSC which has the deciding power as to which BTS should the mobile unit be assigned.

Code Division Multiple Access (CDMA)

Developed by Qualcomm for the US Military, Code Division Multiple Access is a system that enables many users to share the same frequency band at the same time.

CDMA is a spread spectrum technology whereby multiple users share the same time and frequency allocation in a given band. Each speech signal is modulated (spread) across an entire band. The respective receiver demodulates and interprets the signal using relevant code that is embedded in the signal. The final signal contains only the relevant conversation.

The CDMA based mobile technology was introduced in India to provide WLL services as the GSM was the choice for full mobility. CDMA based WLL operators were given license of operation as fixed line operators. As CDMA can very well connect large geographical area, WLL operators were given the rights to provide "limited mobility" whereby a WLL operator could allow network coverage to the boundary of a Short Distance Charging Area (SDCA).

Differences

While TDMA and FDMA are the types of multiplexing in GSM, CDMA works on spread spectrum. However the bandwidth available is same for both the technologies, which is 800, 1800 and 1900 MHz.

While GSM cannot add more than a fixed number of subscribers in a cell, the capacity of the system is not rigid in CDMA. The biggest advantage with GSM is its widespread network in Europe and Asia, whereas CDMA is predominant in US and South Korea. The user of GSM is enabled an easy international roaming. As far as SMS, gaming and internet is concerned, both GSM and CDMA score an equal point.
GSM has already set a standard in India. Being a patented technology, all CDMA equipments and handsets require a royalty to be paid.

The Choice: is determined by the service used by those whom you call most frequently. When mobile telephony was introduced in India, CDMA was an emerging technology. Hence GSM was the only choice. But today’s scenario calls for an evaluation of the alternatives.

But then also u need to be cautious for the the services available in india and that goes in with the main problem and the service providers providing CDMA i.e. Reliance and Tata indicom do not provide that type of services that u may give up a one time lumpsum amount for CDMA and also

CDMA Handsets do not offer that type of variety in functions as well as range

that means u can get a lot of phones playing video in GSM but the scenario changes in CDMA

Answer 2

2

Answer 3

It depends on where you live. CDMA has better coverage in Regional and Rural areas. GSM preferable for best cover in Metropolitan areas.

Answer 4

All the mainstream third generation standards are based on CDMA.

Answer 5

CDMA Works better in hilly areas and mountain ranges in the U.S.

Answer 6

both are good, with GSM, traveling internationally is easier

Answer 7

no,the best is gsm