History and Excellence of Technology CDMA

CDMA ( code division multiple access) be plural access technology where each user applies code which is unique in accessing canal which there is in sistemPada CDMA, information signal at transmitter dicoding and disseminated with bandwidth 125 MHZ ( spread spectrum), then at side repeater is done decoding causing is got information signal required. The expert of telephone technology seluler mutuallies agree to that sophisticated of CDMA far exceeds the present GSM many utilized by telephone operator seluler in Indonesia. CDMA its(the tariff would be far resided in under GSM because expense of its(the invesment is very cheap.

Technology CDMA initially utilized in United States military radio communications ( ACE), starts the year its(the 1990 patents given to Qualcomm, Inc. and made as digital seluler standard in AS since the year 1993. Therefore no wonder if this very safe technology because cannot be duplicated ( clone). So this very compatible technology for usefulness of telephone service banking, like transfer, balance cheque, etc. GSM supported by quicker european countries of melejit number of its(the consumers whole world at the moment has reached more than 700 million. Whereas CDMA number of its(the cutomer?clients has just reached 120 million. GSM and CDMA with variant initially IS-95 A also emerged at the time of at the same in the beginning of year 90-an included in technology ponsel generation second ( 2G).

Some excellences CDMA-2000 ( 1X) if it is compared to GSM as follows :

1. As military technology CDMA very holding up to weather trouble and interference, hence noise very low CDMA causing yields a real good voice quality. Even in a real rain lebatpun its(the voice quality is within measure admiting of tolerance.

2. CDMA cannot be duplicated ( clone) because every cutomer?client is given [by] different code ( on unique). This very codes difficult to be traced by having the character of random.

3. Its(the emittance is a real low ( 1/100 GSM) enables hand phone CDMA to economize in consuming battery, causing can operate is longer to speak and also stand by.

4. Cutomer?client capacities per BTS CDMA can reach 6000 ( 10 times GSM). This thing is caused [by] CDMA is more economizes in frequency usage. All BTS CDMA operates on the same frequency, so that doesn't require complicated counting in compiling its(the konfigu-rasi. Level of capacities per BTS makes expense of invesment released very low. Besides CDMA-2000 ( 1X) operates on spectrum frequency 800 MHZ. This thing will make wide coverage its(the BTS far bigger than GSM. So only requires slimmer of BTS to cover the same wide if it is compared to GSM.

5. CDMA-2000 ( 1X) earns me-ngirim data with speed until 144 Kbps, whereas GSM 9,6 Kbps. So can support service SMS, MMS, plays game and down load data through internet.

( Source : www.indonesia.com )

As far as I know, now card seluler in Indonesia using Teknologi CDMA is StarOne, Telkom Flexi, Fren, Esia, and Smart. According To You are of the consumers CDMA, best which between operator seluler CDMA? or card CDMA does you are using the existing? Sharing please experience of you are in using CDMA at comment column hereunder.