Unsourced Random Access Using ODMA and Polar Codes
- Resource Type
- Periodical
- Authors
- Ozates, M.; Kazemi, M.; Duman, T.M.
- Source
- IEEE Wireless Communications Letters IEEE Wireless Commun. Lett. Wireless Communications Letters, IEEE. 13(4):1044-1047 Apr, 2024
- Subject
- Communication, Networking and Broadcast Technologies
Computing and Processing
Signal Processing and Analysis
Fading channels
Symbols
Receivers
Polar codes
Interference cancellation
Decoding
Complexity theory
Unsourced random access
on-off division multiple access
polar codes
- Language
- ISSN
- 2162-2337
2162-2345
We utilize the on-off division multiple access technique in unsourced random access and develop a high-performing solution operating on both Gaussian and fading multiple access channels based on polar coding. We propose a transmission structure where a fixed part of the transmission frame is utilized for pilot transmission while the users exploit a randomly-selected small fraction of the rest of the frame for data transmission. Our proposed scheme employs a simple, yet efficient pattern detection and single-user decoding algorithm at the receiver, which leads to a superior performance with similar complexity, or a competitive performance with a significantly lower complexity compared to the existing approaches.