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This paper focuses on the performance analysis of a class of limited peak-to-average power ratio (PAPR) precoders for downlink multi-user massive multiple-input multiple-output (MIMO) systems. Contrary to conventional precoding approaches…

Signal Processing · Electrical Eng. & Systems 2022-12-14 Xiuxiu Ma , Abla Kammoun , Ayed M. Alrashdi , Tarig Ballal , Tareq Y. Al-Naffouri , Mohamed-Slim Alouini

This paper focuses on the asymptotic analysis of a class of nonlinear one-bit precoding schemes under Rayleigh fading channels. The considered scheme employs a convex-relaxation-then-quantization (CRQ) approach to the well-known minimum…

Information Theory · Computer Science 2026-01-21 Zheyu Wu , Junjie Ma , Ya-Feng Liu , Bruno Clerckx

Multi-label image recognition is a fundamental task in computer vision. Recently, Vision-Language Models (VLMs) have made notable advancements in this area. However, previous methods fail to effectively leverage the rich knowledge in…

Computer Vision and Pattern Recognition · Computer Science 2024-07-31 Hao Tan , Zichang Tan , Jun Li , Jun Wan , Zhen Lei , Stan Z. Li

Federated Learning (FL) has gained popularity for fine-tuning large language models (LLMs) across multiple nodes, each with its own private data. While LoRA has been widely adopted for parameter efficient federated fine-tuning, recent…

Machine Learning · Computer Science 2025-03-11 Navyansh Mahla , Sunny Gupta , Amit Sethi

Sign Language Translation (SLT) is a challenging task due to its cross-domain nature, involving the translation of visual-gestural language to text. Many previous methods employ an intermediate representation, i.e., gloss sequences, to…

Computer Vision and Pattern Recognition · Computer Science 2023-07-28 Benjia Zhou , Zhigang Chen , Albert Clapés , Jun Wan , Yanyan Liang , Sergio Escalera , Zhen Lei , Du Zhang

Prompt learning has become a dominant paradigm for adapting vision-language models (VLMs) such as CLIP to downstream tasks without modifying pretrained weights. While extending prompts to both vision and text encoders across multiple…

Computer Vision and Pattern Recognition · Computer Science 2026-02-26 Sajjad Ghiasvand , Haniyeh Ehsani Oskouie , Mahnoosh Alizadeh , Ramtin Pedarsani

This paper tackles the problem of the simultaneous interference among the multiple users in the downlink of a wireless multiantenna system. In order to exploit the multiuser interference and transform it into useful power at the receiver…

Signal Processing · Electrical Eng. & Systems 2020-11-10 Maha Alodeh , Björn Ottersten

We study constructive interference based block-level precoding (CI-BLP) in the downlink of multi-user multiple-input single-output (MU-MISO) systems. Specifically, our aim is to extend the analysis on CI-BLP to the case where the considered…

Information Theory · Computer Science 2023-08-31 Yiran Wang , Yunsi Wen , Ang Li , Xiaoyan Hu , Christos Masouros

In semi-supervised semantic segmentation (SSS), weak-to-strong consistency regularization techniques are widely utilized in recent works, typically combined with input-level and feature-level perturbations. However, the integration between…

Computer Vision and Pattern Recognition · Computer Science 2024-11-11 Sien Li , Tao Wang , Ruizhe Hu , Wenxi Liu

High amplitude impulsive noise (IN) occurrence over power line channels severely degrades the performance of Orthogonal Frequency Division Multiplexing (OFDM)systems. One of the simplest methods to reduce IN is to precede the OFDM…

Signal Processing · Electrical Eng. & Systems 2018-07-18 Ferheen Ayaz , Khaled Rabie , Bamidele Adebisi

The Multimodal Large Language Models (MLLMs) have activated the capabilitiesof Large Language Models (LLMs) in solving visual-language tasks by integratingvisual information. The prevailing approach in existing MLLMs involvesemploying an…

Computer Vision and Pattern Recognition · Computer Science 2024-10-31 Tianxiang Wu , Minxin Nie , Ziqiang Cao

Gloss-free Sign Language Production (SLP) offers a direct translation of spoken language sentences into sign language, bypassing the need for gloss intermediaries. This paper presents the Sign language Vector Quantization Network, a novel…

Computer Vision and Pattern Recognition · Computer Science 2024-06-11 Eui Jun Hwang , Huije Lee , Jong C. Park

Multilevel coding (MLC) is a coded modulation technique which can achieve excellent performance over a range of communication channels. Polar codes have been shown to be quite compatible with communication systems using MLC, as the rate…

Information Theory · Computer Science 2021-04-21 Muhammad Zaeem Hasan , Nemanja Stefan Perović , Mark F. Flanagan

The architecture of multimodal large language models (MLLMs) commonly connects a vision encoder, often based on CLIP-ViT, to a large language model. While CLIP-ViT works well for capturing global image features, it struggles to model local…

Computer Vision and Pattern Recognition · Computer Science 2025-07-08 Haoran Lou , Chunxiao Fan , Ziyan Liu , Yuexin Wu , Xinliang Wang

In this work, we propose DARSLP, a simple gloss-free, transformer-based sign language production (SLP) framework that directly maps spoken-language text to sign pose sequences. We first train a pose autoencoder that encodes sign poses into…

Machine Learning · Computer Science 2025-09-24 Sumeyye Meryem Tasyurek , Tugce Kiziltepe , Hacer Yalim Keles

The projector plays a crucial role in multi-modal language models (MLLMs). The number of visual tokens it outputs affects the efficiency of the MLLM, while the quality of the visual tokens influences the visual understanding capabilities of…

Computer Vision and Pattern Recognition · Computer Science 2024-10-15 Shun Qian , Bingquan Liu , Chengjie Sun , Zhen Xu , Baoxun Wang

Prompt learning methods have significantly extended the transferability of pre-trained Vision-Language Models (VLMs) like CLIP for various downstream tasks. These methods adopt handcraft templates or learnable vectors to provide text or…

Computer Vision and Pattern Recognition · Computer Science 2025-07-10 Jiahui Wang , Qin Xu , Bo Jiang , Bin Luo

While self-supervised learning has been shown to benefit a number of vision tasks, existing techniques mainly focus on image-level manipulation, which may not generalize well to downstream tasks at patch or pixel levels. Moreover, existing…

Computer Vision and Pattern Recognition · Computer Science 2022-08-31 Cheng-Yen Hsieh , Chih-Jung Chang , Fu-En Yang , Yu-Chiang Frank Wang

Programmable optical devices provide performance enhancement and flexibility to spatial multiplexing systems enabling transmission of tributaries in high-order eigenmodes of spatially-diverse transmission media, like multimode fiber (MMF).…

The focus of this paper is on spatial precoding in correlated multi-antenna channels, where the number of independent data-streams is adapted to trade-off the data-rate with the transmitter complexity. Towards the goal of a low-complexity…

Information Theory · Computer Science 2009-09-29 Vasanthan Raghavan , Akbar Sayeed , Venu Veeravalli