How CDMA works.? Give a practical example
CDMA allows up to 61 concurrent users in a 1.2288 MHz channel by processing each voice packet with two PN codes. ... In fact, many different "signals" baseband with different spreading codes can be modulated on the same carrier to allow many different users to be supported.
It works by adding a scrambling code to a signal in such a way that multiple signals can transmit on the same channel, and the user can select the desired signal by applying its scrambling code as part of a signal removal process. CDMA technology is used in several mobile phone systems, such as Qualcomm cdmaOne (IS-95) and its enhancement, CDMA2000, as well as in the GSM family’s UMTS 3G system.
In CDMA technology data and voice packets are separated using codes, and then transmitted by using a wide range of frequencies. Because more space is allocated for data in CDMA, this standard has become attractive for 3G high-speed mobile internet use.
CDMA is an example of multiple access, where several transmitters can send information simultaneously over a single communication channel. This allows several users to share a band of frequencies (see bandwidth).
CDMA is an example of multiple access, where several transmitters can send information simultaneously over a single communication channel. This allows several users to share a band of frequencies (see bandwidth).
CDMA is an example of multiple access, where several transmitters can send information simultaneously over a single communication channel. This allows several users to share a band of frequencies (see bandwidth).
It works by adding a scrambling code to a signal in such a way that multiple signals can transmit on the same channel, and the user can select the desired signal by applying its scrambling code as part of a signal removal process. CDMA technology is used in several mobile phone systems, such as Qualcomm cdmaOne (IS-95) and its enhancement, CDMA2000, as well as in the GSM family’s UMTS 3G system.
It works by adding a scrambling code to a signal so that multiple signals can be transmitted to the same channel and the user can select the desired signal by applying his scrambling code as part of a signal removal process. CDMA technology is used in a number of mobile phone systems such as Qualcomm CDMOIN (IS-95) and its extensions, CDMA 2000, as well as UMTS 3G systems in the GSM family.