Podcast S1.E10: Rise of Wireless Communications in India
Update: 2019-11-26
Description
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In this episode, Ravi and Leo discussed about the history of wireless technology development in India. Following points are covered in the discussion.
Key Points:
Ancient Day Communications:
- Dove, Drum and Horse Rider.
- World War 2 Innovations.
- Morse Code.
Late 80's Communication:
- Analog, Telephone Operator.
Late 90's Communication:
- Pager (How it worked, what is the technology).
- 1G - AMPS (American Mobile Communication Service) - Analog Wireless Communication - Pros and Cons.
Early 2000:
- 2G - Message + Voice Call, Later Data (GSM, Edge, GPRS, CDMA, TDS-CDMA, CDMA 2K) - Protocol and Design Stages.
- 3G - Message + Voice Call + Larger Data, Later Video Call (WCDMA, HSUPA, HSDPA).
- What is GSM technology’s special?
- What is Bandwidth?
- What is CDMA Technology? Battery drain issue in 3G Technology.
- WiMax - High throughput and power (battery) enhancements.
- OFDM Technology (Orthogonal Frequency).
- PAPR Issues and PA Dynamic Range Failure.
2010 Onwards:
- 4G- PAPR and PA Issues Resolved, SFDMA (synchronous frequency division multiple access) Technology.
- 5G - NR - Data transfer Rate is too high, Technology support for IoT, Home Automation and Automated Smart Homes. Expected release date.
- 6G - GFDM (Generalized Frequency Division Multiplexing) Technology - throughput and challenges, Applications AR, VR.
Whether signal strength will be good under tower?
How Tower-Tower communication happens?
How many active users a single tower can hold?
What do we have in SIM card?
Security Concerns:
Encrypted Message, Internal protocol definition will take care of it.
Always new inventions are vulnerable, over the time it will get matured.
CDMA Patent Held by Hedy Lamarr and composer George Antheil: https://www.qualcomm.com/invention/stories/world-changing-technology.
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Language: Tamil.
Cover: Rise of Communication in India.
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