The Third Generation mobile phones are digital and based on
2018
The Third Generation mobile phones are digital and based on
- A.
𝐴𝑀𝑃𝑆
- B.
𝐷−𝐴𝑀𝑃𝑆
- C.
𝐶𝐷𝑀𝐴
- D.
Broadband 𝐶𝐷𝑀𝐴
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Correct answer: D
Answer: Broadband CDMA
Explanation: Third-generation (3G) mobile systems are digital and are based on broadband/wideband CDMA technologies such as W‑CDMA (used by UMTS) and CDMA2000.
AMPS is an analog first-generation (1G) system, so it is not 3G.
D‑AMPS is a digital 2G system based on TDMA, not the CDMA-based approach used in 3G.
CDMA (IS‑95) refers to earlier narrowband CDMA; 3G specifically uses broadband/wideband CDMA variants (W‑CDMA, CDMA2000) to support higher data rates.
Key point: 3G = digital and uses broadband/wideband CDMA technologies.
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