Ever since its commercialization in 1995, CDMA technology has been at the forefront of wireless innovation. It continues to set new standards in voice and data efficiency. Its 3G version, CDMA2000 is enabling operators to economically address the ever-increasing demand for voice and data services through 1X and EV-DO, respectively. This paper focuses on the evolution of CDMA2000 1X and its ability to significantly enhance voice capacity. CDMA2000 1X is the first and most widely deployed 3G technology in the world, as measured by the number of subscribers. It incorporates efficient vocoders, robust power control and soft hand off mechanisms to offer excellent voice quality with best-in-class capacity. Moreover, CDMA2000 1X is supported by a large ecosystem of device vendors, providing the full range of devices with varying feature sets and price points. CDMA2000 1X's low total cost of ownership has made it a popular choice among both developed and emerging markets.
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