How much increase in spectral efficiency is provided by W-CDMA in comparison to GSM?(a) Two times(b) Three times(c) No increase(d) Six timesThis question was posed to me in an interview for internship.This question is from 3G W-CDMA (UMTS) topic in division Modern Wireless Communication Systems of Wireless/Mobile

How much increase in spectral efficiency is provided by W-CDMA in comp

1.	How much increase in spectral efficiency is provided by W-CDMA in comparison to GSM?(a) Two times(b) Three times(c) No increase(d) Six timesThis question was posed to me in an interview for internship.This question is from 3G W-CDMA (UMTS) topic in division Modern Wireless Communication Systems of Wireless/Mobile
Answer» RIGHT ANSWER is (d) Six times To explain: W-CDMA can provide at least six times an increase in spectral efficiency over GSM at system level. Such a wider bandwidth is chosen to higher data rates as low as 8 KBPS to as high as 2 Mbps on a single 5 MHz W-CDMA radio channel.

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