8 papers
From Relevance to Validity: Zero-Shot Tool Selection via Functional and Contextual Validation
Xiaoxuan Dong, Jin Zhang, Zichen Yuan +11
Large language model (LLM) agents increasingly face tasks from unseen domains and execution contexts, making zero-shot tool selection essential for identifying tools that can satis…
Transceiver Design for Cell-Free Unsourced Random Access
Mert Ozates, Mohammad Kazemi, Eduard Jorswieck +1
We propose a low-complexity, energy-efficient solution for cell-free unsourced random access (URA), in which multiple distributed access points are connected to a central processin…
ETSI ISG MAT: Bridging Multiple Access Techniques Research and 6G Standardisation
Dheeraj Raja Kumar, Mert Ozates, Yong Jin Daniel Kim +11
Improved spectral efficiency and inter-user interference mitigation are important aspects of IMT-2030 and the ongoing 3GPP 6G study. ETSI established the Industry Specification Gro…
Fully Asynchronous Unsourced Random Access over Fading Channels
Mert Ozates, Mohammad Kazemi, Gianluigi Liva +1
We examine unsourced random access in a fully asynchronous setup, where active users transmit their data without restriction on the start time over a fading channel. In the propose…
A Fully Asynchronous Unsourced Random Access Scheme
Mert Ozates, Mohammad Kazemi, Gianluigi Liva +1
We investigate fully asynchronous unsourced random access (URA), and propose a high-performing scheme that employs on-off division multiple access (ODMA). In this scheme, active us…
ODMA-Based Cell-Free Unsourced Random Access with Successive Interference Cancellation
Mert Ozates, Mohammad Kazemi, Eduard Jorswieck +1
We consider the unsourced random access problem with multiple receivers and propose a cell-free type solution for that. In our proposed scheme, the active users transmit their sign…
Unsourced Random Access: A Comprehensive Survey
Mert Ozates, Mohammad Javad Ahmadi, Mohammad Kazemi +2
Multiple access communication systems enable numerous users to share common communication resources, playing a crucial role in wireless networks. With the emergence of the sixth ge…
An ODMA-Based Unsourced Random Access Scheme with a Multiple Antenna Receiver
Mert Ozates, Mohammad Kazemi, Tolga M. Duman
We investigate the unsourced random access scheme assuming that the base station is equipped with multiple antennas, and propose a high-performing solution utilizing on-off-divisio…