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Dialogue generation models face the challenge of producing generic and repetitive responses. Unlike previous augmentation methods that mostly focus on token manipulation and ignore the essential variety within a single sample using hard…

Computation and Language · Computer Science 2021-03-03 Yu Cao , Liang Ding , Zhiliang Tian , Meng Fang

Sparse Code Multiple Access (SCMA) is an enabling code-domain non-orthogonal multiple access (NOMA)scheme for massive connectivity and ultra low-latency in future machine-type communication networks. As an evolved variant of code division…

Information Theory · Computer Science 2021-05-17 Saumya Chaturvedi , Zilong Liu , Vivek Ashok Bohara , Anand Srivastava , Pei Xiao

Expected to provide higher transportation efficiency and security, autonomous driving has attracted substantial attentions from both industry and academia. Meanwhile, the emergence of edge intelligence has further introduced significant…

Signal Processing · Electrical Eng. & Systems 2024-09-25 Yunqi Feng , Hesheng Shen , Zhendong Shan , Qianqian Yang , Xiufang Shi

The autonomous driving industry is increasingly adopting end-to-end learning from sensory inputs to minimize human biases in system design. Traditional end-to-end driving models, however, suffer from long-tail events due to rare or unseen…

Artificial Intelligence · Computer Science 2024-07-02 Ran Tian , Boyi Li , Xinshuo Weng , Yuxiao Chen , Edward Schmerling , Yue Wang , Boris Ivanovic , Marco Pavone

Semantic communication (SC) is emerging as a pivotal innovation within the 6G framework, aimed at enabling more intelligent transmission. This development has led to numerous studies focused on designing advanced systems through powerful…

Signal Processing · Electrical Eng. & Systems 2024-12-30 Guangyi Zhang , Kequan Zhou , Yunlong Cai , Qiyu Hu , Guanding Yu

Cooperative perception, offering a wider field of view than standalone perception, is becoming increasingly crucial in autonomous driving. This perception is enabled through vehicle-to-vehicle (V2V) communication, allowing connected…

Information Theory · Computer Science 2024-09-17 Yucheng Sheng , Le Liang , Hao Ye , Shi Jin , Geoffrey Ye Li

Recent developments in machine learning (ML) techniques enable users to extract, transmit, and reproduce information semantics via ML-based semantic communication (SemCom). This significantly increases network spectral efficiency and…

Signal Processing · Electrical Eng. & Systems 2025-12-17 Guhan Zheng , Qiang Ni , Aryan Kaushik , Lixia Yang , Yushi Wang , Charilaos Zarakovitis

This paper develops an edge-device collaborative Generative Semantic Communications (Gen SemCom) framework leveraging pre-trained Multi-modal/Vision Language Models (M/VLMs) for ultra-low-rate semantic communication via textual prompts. The…

Information Theory · Computer Science 2025-05-05 Mengmeng Ren , Li Qiao , Long Yang , Zhen Gao , Jian Chen , Mahdi Boloursaz Mashhadi , Pei Xiao , Rahim Tafazolli , Mehdi Bennis

Semantic communication (SemCom) has received considerable attention for its ability to reduce data transmission size while maintaining task performance. However, existing works mainly focus on analog SemCom with simple channel models, which…

Signal Processing · Electrical Eng. & Systems 2024-01-05 Chuanhong Liu , Caili Guo , Yang Yang , Wanli Ni , Tony Q. S. Quek

Joint Communication and Sensing (JCAS) platforms are emerging as a foundation of next-generation mmWave (MMW) and sub-THz systems, enabling both high-throughput data transfer and angular localization within a shared signal path. This paper…

Signal Processing · Electrical Eng. & Systems 2025-10-16 Najme Ebrahimi , Arun Paidmarri , Alexandra Gallyas-Sanhueza , Yuan Ma , Haoling Li , Basem Abdelaziz Abdelmagid , Tzu-Yuan Huang , Hua Wang

Satellite communications face severe bottlenecks in supporting high-fidelity synchronized audiovisual services, as conventional schemes struggle with cross-modal coherence under fluctuating channel conditions, limited bandwidth, and long…

Image and Video Processing · Electrical Eng. & Systems 2026-03-12 Fangyu Liu , Peiwen Jiang , Wenjin Wang , Chao-Kai Wen , Xiao Li , Shi Jin

In this paper, a new approach for multiple access (MA) in fifth generation (5G) of cellular networks called power domain sparse code multiple access (PSMA) is proposed. In PSMA, we adopt both the power domain and the code domain to transmit…

Information Theory · Computer Science 2017-06-21 Nader Mokari , Mohammad. R Javan , Mohammad Moltafet , Hamid Saeedi , Hossein Pishro-Nik

Codebook-based generative semantic communication attracts increasing attention, since only indices are required to be transmitted when the codebook is shared between transmitter and receiver. However, due to the fact that the semantic…

Information Theory · Computer Science 2025-08-12 Peigen Ye , Yaping Sun , Shumin Yao , Hao Chen , Xiaodong Xu , Shuguang Cui

Semantic communications have been utilized to execute numerous intelligent tasks by transmitting task-related semantic information instead of bits. In this article, we propose a semantic-aware speech-to-text transmission system for the…

Audio and Speech Processing · Electrical Eng. & Systems 2024-10-08 Zhenzi Weng , Zhijin Qin , Huiqiang Xie , Xiaoming Tao , Khaled B. Letaief

As 5G networks rolling out in many different countries nowadays, the time has come to investigate how to upgrade and expand them towards 6G, where the latter is expected to realize the interconnection of everything as well as the…

Signal Processing · Electrical Eng. & Systems 2021-04-06 Lisu Yu , Zilong Liu , Miaowen Wen , Donghong Cai , Shuping Dang , Yuhao Wang , Pei Xiao

Semantic communications represent a significant breakthrough with respect to the current communication paradigm, as they focus on recovering the meaning behind the transmitted sequence of symbols, rather than the symbols themselves. In…

Signal Processing · Electrical Eng. & Systems 2023-09-06 S. Barbarossa , D. Comminiello , E. Grassucci , F. Pezone , S. Sardellitti , P. Di Lorenzo

In this paper, we propose a novel non-orthogonal multiple access (NOMA) scheme based on trellis-coded modulation (TCM). Different from those in the traditional code-domain NOMA, the incoming data streams of multiple users are jointly coded…

Information Theory · Computer Science 2019-06-26 Boya Di , Lingyang Song , Yonghui Li , Geoffrey Ye Li

Semantic communication (SC) enables bandwidth-efficient coordination in multi-agent systems by transmitting meaning rather than raw bits. However, when agents employ heterogeneous sensing modalities and AI architectures, perfect bit-level…

Information Theory · Computer Science 2026-01-22 Christo Kurisummoottil Thomas , Mingzhe Chen

Wireless transmission using non-contiguous chunks of spectrum is becoming increasingly important due to a variety of scenarios such as: secondary users avoiding incumbent users in TV white space; anticipated spectrum sharing between…

Networking and Internet Architecture · Computer Science 2016-02-16 Muhammad Nazmul Islam , Narayan B. Mandayam , Sastry Kompella , Ivan Seskar

This paper proposes a new communication protocol for a cooperative non-orthogonal multiple access (NOMA) system. In this system, based on users' channel conditions, each two NOMA users are paired to reduce system complexity. In this…

Signal Processing · Electrical Eng. & Systems 2018-03-29 Duc-Dung Tran , Ha-Vu Tran , Dac-Binh Ha , Georges Kaddoum