Popular 2G CDMA standard IS-95 is also known as ______________a)CdmaOneb)CdmaTwoc)IS-136d)IS-95BCorrect answer is option 'A'. Can you explain this answer?

Question

Answer

The popular 2G CDMA standard, Interim Standard (IS-95) is also known as CdmaOne. The 2.5G CDMA standard, IS-95B is called CdmaTwo. And IS-136 is a TDMA standard for 2G.

Answer

CdmaOne

Explanation: The popular 2G CDMA standard, Interim Standard (IS-95) is also known as CdmaOne. The 2.5G CDMA standard, IS-95B is called CdmaTwo. And IS-136 is a TDMA standard for 2G.

Answer

Introduction:
The popular 2G CDMA standard IS-95, also known as CdmaOne, revolutionized the world of wireless communication. This standard was developed by Qualcomm and introduced in 1995. It provided a significant improvement over the earlier analog cellular systems by offering digital voice and data services. IS-95 utilized Code Division Multiple Access (CDMA) technology, which allowed multiple users to share the same frequency band simultaneously.

Explanation:
IS-95 is also known as CdmaOne because it was the first commercial implementation of CDMA technology. Let's understand why it is referred to as CdmaOne and eliminate the other options:

a) CdmaOne:
- IS-95 was the first generation of the CDMA standard, and it became known as CdmaOne to distinguish it from future CDMA standards.
- The term 'One' signifies that it was the initial implementation of CDMA technology, laying the foundation for subsequent CDMA standards like CDMA2000 and EV-DO.
- CdmaOne offered several advantages over other competing standards, such as improved call quality, increased capacity, and better security.

b) CdmaTwo:
- There is no such standard as CdmaTwo. The numbering convention suggests that it would be the next generation of CDMA after CdmaOne, but it does not exist.

c) IS-136:
- IS-136, also known as D-AMPS (Digital Advanced Mobile Phone System), is a 2G TDMA (Time Division Multiple Access) standard, not a CDMA standard.
- While it was popular in some regions, IS-136 is a different technology from IS-95.

d) IS-95B:
- IS-95B is an enhanced version of the original IS-95 standard, introducing features like improved speech quality, data rate enhancements, and increased capacity.
- However, IS-95B is not the name by which the original IS-95 standard is commonly known.

Conclusion:
In conclusion, the popular 2G CDMA standard IS-95 is also known as CdmaOne. This name distinguishes it as the first commercial implementation of CDMA technology, which revolutionized wireless communication and paved the way for future CDMA standards.

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