Sustainable 5G/6G Communication Transmitter Design Using Hybrid Signal Processing Solutions
This talk focuses on an essential aspect of Green Communication, i.e., transmitter efficiency. PA and feeder networks consume 65% of the power in a base station. Reducing power consumption in PA directly impacts the overall power consumption. Enhancing PA efficiency has a huge social impact by reducing the CO2 footprint in wireless network technology. It is well known that 5G/6G applications have signals with high PAPR, and achieving good efficiency in PA will be challenging in such a scenario. The transmission bandwidth has increased five times in 5th-generation and beyond communication systems compared to 4G communication, which imposes stringent conditions on power amplifier design in terms of linearity and efficiency. This talk presents critical challenges for implementing a linearization solution for broadband power amplifiers. The limitations and salient features of digital and analog predistortion implementation will be offered. The talk will further explore implementing hybrid predistortion techniques to achieve lower implementation costs with enhanced performance. It is shown that for carrier aggregated broadband 5G communication signals, the proposed hybrid solution provides a lower footprint area and lowers digital signal processing cost compared to state-of-the-art digital predistortion solutions, which is a lucrative offering for mmWave and terahertz communication systems. In addition, proposed techniques are evaluated for MIMO and beamforming applications for 5G/6G applications while considering the cost of digital implementation into consideration. An innovative application of the PA digital linearization technique is shown for multiplier nonlinearity, where the C-band signal is upconverted to the mmWave signal without additional LO, hence providing low-cost mmWave signal generation.
Date and Time
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- Date: 08 Apr 2025
- Time: 11:30 AM UTC to 12:30 PM UTC
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- Motilal Nehru National
- Institute of Technology
- Prayagraj, Uttar Pradesh
- India 211004
- Building: Conference room, ECED
Speakers
Meenakshi of IIT Roorkee
Sustainable 5G/6G Communication Transmitter Design Using Hybrid Signal Processing Solutions
Biography:
Dr. Meenakshi Rawat received a Ph.D. in electrical and computer engineering from the University of Calgary, Calgary, AB, Canada, in 2012. From 2012 to 2013, she was a Post-Doctoral Research Fellow at the University of Calgary. From 2013 to 2014, she was a Post-Doctoral Project Researcher/Scientist at The Ohio State University, Columbus, OH, USA. She joined IIT Roorkee in June 2014 and is an Associate Professor at IIT Roorkee, Roorkee, India. She has over 120 articles in peer-reviewed journals and refereed conferences in sustainable software-defined-radio development and digital and analog techniques for energy and spectrum-efficient communication system design. She has three granted Indian patents and one applied Indian patent. She has completed six projects (completed), two projects (running) in the relevant areas, and three projects as Co-PI. On the professional front, Dr. Rawat had been TPC for WAMS-2022 and MAPCON-2022
and Chair for the "Women in Microwave" session for iMARC-2019, Mumbai, and iMARC-2021, IIT Kanpur. On the administrative front, she has been associate dean of academic affairs (IT & Admission) since April 2024 and Professor-in-Charge, Ranking since July 2022. Previously she had been Faculty Advisor at the Cultural Society, Spic Macay & Cinema Club from July 2022 to December 2023 and associate dean of academic affairs (Curriculum) from July 2023- April 2024. She is a recipient of the Young Faculty Research Fellowship (YFRF) under the Visvesvaraya program of MeitY, Digital India Corporation (2018-2023), Faculty Fellowship awardee from Technology Incubation Hub (TiH), and Institute Research Fellowship 2022-2024. She was featured in CII Compendium for Women in STEM - Second Edition in December 2023. She also received the Women Science Communicator Award on International Women and Girls Science Day in February 2024. She is a frequent invited speaker in workshops conducted in international IEEE conferences. She has provided short courses/seminars to industries such as Bharat Electronics Limited, CDOT, and various DRDO labs to emphasize the importance of sustainable communication.
She is co-founder and director of the start-up “Linearized Amplifier Technologies and Services Private Limited.
Media
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| Certificate of appreciation | 418.79 KiB |