2G CDMA standard, IS-95, was proposed by which company?

Solution (By Examveda Team)

Question: 2G CDMA standard, IS-95, was proposed by which company?

Definitions:
2G (Second Generation) Wireless Technology: Represents the second generation of cellular network technology. It marked a significant improvement over 1G (analog) systems by introducing digital transmission, leading to improved voice quality, increased capacity, and enhanced security.
CDMA (Code Division Multiple Access): A channel access method used by radio communication systems. Unlike other multiple access schemes like TDMA (Time Division Multiple Access) or FDMA (Frequency Division Multiple Access), CDMA allows multiple users to share the same frequency band simultaneously by using different codes to distinguish between them. This is achieved by spreading the signal across a wider bandwidth using a unique code for each user.
IS-95: A specific standard for CDMA-based 2G cellular networks. It defines the air interface specifications (how the mobile phone communicates with the base station) for the system.

Correct Answer: B: Qualcomm
Qualcomm played a pivotal role in the development and standardization of IS-95, the prominent CDMA standard for 2G networks. They were instrumental in developing the underlying CDMA technology and were heavily involved in its commercialization.

Why other options are incorrect:
A: Nippon Telephone and Telegraph (NTT): While NTT is a major telecommunications company, it wasn't the primary proponent of the IS-95 standard. Their contributions to 2G and beyond were significant in their own right, but not specifically focused on IS-95 development.
C: Bellcore and Motorola: Both Bellcore (now Telcordia Technologies) and Motorola contributed to the advancement of cellular technology, but they weren't the principal developers behind the IS-95 CDMA standard. They had their own involvement in other cellular technologies and standards.
D: AT&T Bell Laboratories: AT&T Bell Labs also played a significant role in the evolution of telecommunications, including contributions to early cellular systems. However, the core development and proposal of the IS-95 standard are primarily attributed to Qualcomm.