CIF: Small: Wireless Massive Access: From Fundamental Limits to Practical Design

Project: Research project

Description

This project will study the fundamental limits of wireless massive access under realistic assumptions and develop practical designs that approach those limits. Specifically, the proposed research addresses the following topics:

1. A theoretical foundation for wireless massive access: This project will develop a theory for communication systems in the regime of a massive number of devices. Preliminary results show that the throughput gain over random access achieved by allowing many devices to access the uplink channel grows unboundedly as the number of devices increases. The PI's group has also demonstrated the feasibility of jointly decoding many users. Important practical issues such as synchronization and channel estimation are addressed at the fundamental level rather than an afterthought.

2. Practical coding schemes for massive access: This project will address each of the crucial building blocks required to demonstrate a scalable massive access system. The investigation will cover the design of scalable codes that are resilient to various channel uncertainties, learning techniques for exploiting the stationary channel and traffic coditions over time, techniques for device localization, and security considerations. The design will be validated through experimentation using software-defined radios (SDRs). While only a small network can be built using SDRs, synthetic interference signals will be added to the received signal to emulate arbitrarily large networks.
StatusActive
Effective start/end date10/1/199/30/22

Funding

  • National Science Foundation (CCF-1910168)

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Radio receivers
Signal interference
Channel estimation
Decoding
Communication systems
Synchronization
Throughput
Uncertainty