What Are The Disadvantages Of CDMA?

CDMA is an acronym for Code Division Multiple Access technology. It is used in second and third generation wireless communication.1 CDMA spreads data across the spectrum (the CDMA channel has a frequency of 1.25Mhz and the entire bandwidth is used). It allows multiple users to access channels in the radio spectrum. This means the data from multiple users is transmitted across the network all at once, without creating interference. Each individual data is given a unique code that differentiates it from that of another user. The data is transmitted and then decoded by the receiver.

Evolution

CDMA evolved from World War II spread spectrum technology. The allies would manipulate frequencies at irregular intervals between transmission and reception. This essentially

Because nearby phones use the same frequency, they will interfere with each other 's signal if the transmitting power is too high. CDMA automatically adjusts the power level to one that 's powerful enough to provide a clear call but not so powerful that it creates excessive interference. Because it is not always transmitting at peak power, the call uses less energy from the phone 's battery. Disadvantages

A disadvantage of CDMA based networks is in the United States. CDMA carriers use network-based white lists to verify their subscribers. That means you can only switch phones with your carrier 's permission, and a carrier doesn 't have to accept any particular phone onto its network. 3G CDMA networks (known as "EV-DO" or "Evolution Data Optimized") also generally can 't make voice calls and transmit data at the same time.

GSM is more global compared to CDMA networks.4 It can make roaming difficult when you travel to places like Europe and what with our phones being such an integral part of our lives nowadays this could cause significant disruption to our lives.

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