6 papers
Achieving Rate-Concurrency Balance for Underwater Concurrent Random Access
Enqi Zhang, Yuxuan Guo, Weining Li +5
Underwater acoustic networks face a fundamental rate--concurrency tradeoff: high-rate waveforms (e.g., OFDM, OTFS) are designed for point-to-point links and rely on orthogonal MAC…
Iterative Receiver Processing at Relays in PNC-Enabled Multi-Hop Underwater Acoustic Networks
Gewei Zhang, Deqing Wang, Lizhao You +2
Physical-layer network coding (PNC) can increase end-to-end throughput in bi-directional multi-hop underwater acoustic (UWA) networks. However, multipath delay spread and Doppler-i…
From Simulation to Reality: Practical Deep Reinforcement Learning-based Link Adaptation for Cellular Networks
Lizhao You, Nanqing Zhou, Guanglong Pang +3
Link Adaptation (LA) that dynamically adjusts the Modulation and Coding Schemes (MCS) to accommodate time-varying channels is crucial and challenging in cellular networks. Deep rei…
Receiver-Centric Generative Semantic Communications
Xunze Liu, Yifei Sun, Zhaorui Wang +4
This paper investigates semantic communications between a transmitter and a receiver, where original data, such as videos of interest to the receiver, is stored at the transmitter.…
Rethinking Grant-Free Protocol in mMTC
Minhao Zhu, Yifei Sun, Lizhao You +3
This paper revisits the identity detection problem under the current grant-free protocol in massive machine-type communications (mMTC) by asking the following question: for stable…
Combating Multi-path Interference to Improve Chirp-based Underwater Acoustic Communication
Wenjun Xie, Enqi Zhang, Lizhao You +3
Linear chirp-based underwater acoustic communication has been widely used due to its reliability and long-range transmission capability. However, unlike the counterpart chirp techn…