How IIT Professors created India's own 5G Tech | Prof. Radha Krishna Ganti, EE, IITM on BP2B

Episode Summary

Almost all of us have a 5G smartphone. It is frustrating when we don’t get 5G network and it drops down to a 4G network. But what really goes on behind that 5G network? How does it work and how do you get network connectivity on your phone even when you are travelling? If you have spent time pondering on these questions, today’s episode will be an interesting watch for you. This one promises to be a information-packed episode about all things wireless, including 5G.

Watch as Amrut sits down with Professor Radha Krishna Ganti to discuss the details of wireless technology, what does the G in 5G stand for, IIT Madras’ work in the field of 5G Technology and why Electrical Engineering is considered a tough course.

Amrut’s Comment

Key Highlights

[00:01:44] Shanti Swarup Bhatnagar Award: The experience of receiving the award

[00:02:56] Wireless Communication: How does it work?

[00:05:35] What is 5G: The components that create 5G

[00:10:05] 5G Test Bed: What is it and why is it important?

[00:14:34] 5G/4G/3G: What is the G and what does it mean?

[00:17:07] 2G to 5G: What has the difference in bandwidth and technology been? 

[00:19:41] Use Cases of 5G: 5G Verticals, their applications and who defines these needs?

[00:25:22] BSNL 4G Deployment: The interesting story behind the deployment

[00:29:47] Electrical Engineering: Why should youngsters join and why is it considered a difficult course?

[00:36:27] GSM to 2G to 5G: And some anecdotes of Professor Bhaskar!

[00:40:33] Student Years and University: Shift from theoretical to practical view of systems studies

[00:46:22] Focus on Theorotical Learning at IIT Madras: The professor’s view on this perception

[00:47:23] EE vs EEE vs ECE: What is the difference?

[00:51:23] The impact of AI: How has AI/ML affected Electrical Engineering?

Institutions mentioned

[00:01:22] IIT Madras

[00:12:39] The 5G infrastructure and testing facility is located in the IIT Madras Research Park 

[00:15:12] The ITU [International Telecom Union] is a UN body that regulates the spectrum.

[00:42:19] Professor Radha Krishna went to the University of Notre Dame for his Ph.D after completing his degree

People mentioned

[00:01:38] Professor Prabhu Rajagopal also won the Shanti Swarup Bhatnagar Award this year.  

[00:07:42] Ericsson claims to have been building radio since Guglielmo Marconi’s time.

[00:12:25] Ashwini Vaishnaw was the minister for Technology and made the first 5G phone call in IIT Madras Research Park

[00:34:47] Professor Ashok Jhunjhunwala and Professor Bhaskar Ramamurthi were among the first people to build the Wireless Local Loop.

Companies mentioned

[00:03:20] Tata Sky is an example of wireless communication.

[00:03:51] People want to watch Netflix and YouTube even when travelling on high-speed trains.

[00:07:20] Samsung, Ericsson, Huawei, Nokia and ZTE are some companies that can build the 5G equipment infrastructure

[00:11:54] 5G deployment in India is done by Airtel and Reliance Jio

[00:14:02] C-DOT and Tejas Networks are some of the companies trying to take 5G technology to product level.

[00:25:13] BSNL has a 4G technology which is completely from homegrown technologies 

[00:27:58] Tata Communications is a part of one of the consortiums that worked on the homegrown technologies for BSNL 4G deployment

Books & Other Media

Concepts & Models

[00:10:40] TRL stands for Technology Readiness Level. It is an acronym for Technology Readiness Level, a nine-point scale used to measure the maturity of a technology from a basic idea (TRL 1) to proven market readiness (TRL 9)[00:18:09] Multiple Input Multiple Output technology (MIMO) stands for Multiple Input Multiple Output technology which uses multiple antennas at both the transmitter and receiver to increase wireless data throughput and reliability, effectively multiplying the capacity of a radio link.  

[00:18:14] Enhanced Mobile Broadband (eMBB) is a concept that is designed to provide higher data rates, better bandwidth, higher throughput, increased reliability and lower latency as well as improved multimedia functionality for the end user. This technology is mainly aimed at improving user experience for applications such as video streaming, real-time gaming and virtual reality functionality.

[00:23:28] Low Mobility Large Cell [LMLC] is a 5G technology concept designed for extended coverage in rural and low-mobility scenarios. This standard was proposed by India for the IMT2020 (5G) framework and is used to evaluate 5G technologies for sparsely populated rural areas by using larger cell sizes for wider coverage.  

[00:31:54] Signal-to-Noise Ratio [SNR] is a measure comparing the power of a desired signal to the power of background noise, expressed as a ratio or in decibels. A higher SNR indicates a stronger signal relative to the noise which is desirable for better communication, clearer images, and higher-quality data.]

[00:35:29] Wireless Local Loop [WLL] is a system that replaces traditional wired communications with wireless radio links to connect subscribers to the central telephone exchange. It is particularly useful in rural, remote, or hard-to-wire areas, offering a cost-effective and flexible communication solution

Additional Links

Episode 6    |    55 Mins
Guest Bio

Professor Radha Krishna Ganti is a professor of Electrical Engineering in the field of wireless communication. He is also the winner of the 2024 Yuva Vigyan Shanti Swarup Bhatnagar Award. He started his journey in IIT Madras as a Mechanical Engineering graduate but changed to Electrical Engineering at the end of his first semester. He completed his Doctorate in Electrical Engineering from the University of Notre Dame He also completed a Post Doctoral fellowship at the University of Texas.

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