In CDMA, technique of data transmission conducted differs from the transmission at GSM. CDMA use the more peaceful transmission technique, because in this technological history early its beginning used for military.
CDMA is true promise the data security if compared to an other technology like GSM, although we cannot say that the technology GSM is not peaceful. CDMA give the unique PIN code to every its user and only its user couple owning same key for the fox of code data accepted.
In general, process the data transmission in explainable technology CDMA as follows. Consignor, for example BTS (Base Transceiver Station) will arrange the signal before transmission pass the air media. Data beet at full speed lower (for example 9, 6 kbps) beforehand will be multiplied encoded PN owning high fast (for example 1, 2288 Mcps). With the multiplication process will be obtained spreading energy at wide frequency band (for example 1, 25 MHZ CDMA). Signal spread over this modulation will with the certain carrier RF for the transmission of to receiver.
Beside receiver, signals will demodulation beforehand by multiplying with the same carrier RF. Then signal will be disseminated by multiplying to return encoded PN which is the same as beside consignor. To get the data beet come from hence used a beet detector to cure the signal become the ordinary digital conversation.
CDMA is true promise the data security if compared to an other technology like GSM, although we cannot say that the technology GSM is not peaceful. CDMA give the unique PIN code to every its user and only its user couple owning same key for the fox of code data accepted.
In general, process the data transmission in explainable technology CDMA as follows. Consignor, for example BTS (Base Transceiver Station) will arrange the signal before transmission pass the air media. Data beet at full speed lower (for example 9, 6 kbps) beforehand will be multiplied encoded PN owning high fast (for example 1, 2288 Mcps). With the multiplication process will be obtained spreading energy at wide frequency band (for example 1, 25 MHZ CDMA). Signal spread over this modulation will with the certain carrier RF for the transmission of to receiver.
Beside receiver, signals will demodulation beforehand by multiplying with the same carrier RF. Then signal will be disseminated by multiplying to return encoded PN which is the same as beside consignor. To get the data beet come from hence used a beet detector to cure the signal become the ordinary digital conversation.
