Results 11 to 20 of about 128,513 (359)
2014 IEEE 80th Vehicular Technology Conference (VTC2014-Fall), 2014 Multicarrier CDMA is a multiple access scheme in which modulated QAM symbols are spread over OFDMA tones by using a generally complex spreading sequence. Effectively, a QAM symbol is repeated over multiple tones. Low density signature (LDS) is a version of CDMA with low density spreading sequences allowing us to take advantage of a near optimal message
Hosein Nikopour +3 more
openaire +4 more sources
Development of a qualitative data analysis codebook informed by the i-PARIHS framework
Implementation Science Communications, 2022 Background The Integrated-Promoting Action on Research Implementation in Health Services (i-PARIHS) framework and its predecessor, PARIHS, have been widely utilized in implementation studies. Although i-PARIHS developers have focused on creating tools to
Mona J. Ritchie +4 more
doaj +2 more sources
Towards Robust Blind Face Restoration with Codebook Lookup Transformer [PDF]
Neural Information Processing Systems, 2022 Blind face restoration is a highly ill-posed problem that often requires auxiliary guidance to 1) improve the mapping from degraded inputs to desired outputs, or 2) complement high-quality details lost in the inputs.
Shangchen Zhou +3 more
semanticscholar +1 more source
Supporting Qualitative Analysis with Large Language Models: Combining Codebook with GPT-3 for Deductive Coding [PDF]
IUI Companion, 2023 Qualitative analysis of textual contents unpacks rich and valuable information by assigning labels to the data. However, this process is often labor-intensive, particularly when working with large datasets. While recent AI-based tools demonstrate utility,
Ziang Xiao +4 more
semanticscholar +1 more source
RIDCP: Revitalizing Real Image Dehazing via High-Quality Codebook Priors [PDF]
Computer Vision and Pattern Recognition, 2023 Existing dehazing approaches struggle to process real-world hazy images owing to the lack of paired real data and robust priors. In this work, we present a new paradigm for real image dehazing from the perspectives of synthesizing more realistic hazy ...
Ruixia Wu +4 more
semanticscholar +1 more source
Environment-Aware Codebook for Reconfigurable Intelligent Surface-Aided MISO Communications [PDF]
IEEE Wireless Communications Letters, 2023 Reconfigurable intelligent surface (RIS) is a revolutionary technology that can customize the wireless channel and improve the energy efficiency of next-generation cellular networks.
Xing Jia +5 more
semanticscholar +1 more source
Near-Field Beam Training: Joint Angle and Range Estimation With DFT Codebook [PDF]
IEEE Transactions on Wireless Communications, 2023 Prior works on near-field beam training have mostly assumed dedicated polar-domain codebook and on-grid range estimation, which, however, may suffer long training overhead, high codebook storage requirement, and degraded estimation accuracy.
Xun Wu +3 more
semanticscholar +1 more source
Robust Semantic Communications With Masked VQ-VAE Enabled Codebook [PDF]
IEEE Transactions on Wireless Communications, 2022 Although semantic communications have exhibited satisfactory performance on a large number of tasks, the impact of semantic noise and the robustness of the systems have not been well investigated.
Qiyu Hu +5 more
semanticscholar +1 more source
Codebook-Based Solutions for Reconfigurable Intelligent Surfaces and Their Open Challenges [PDF]
IEEE wireless communications, 2022 Reconfigurable intelligent surfaces (RIS) is a revolutionary technology to cost-effectively improve the performance of wireless networks. We first review the existing framework of channel estimation and passive beamforming (CE & PBF) in RIS-assisted ...
Jiancheng An +6 more
semanticscholar +1 more source
PeCo: Perceptual Codebook for BERT Pre-training of Vision Transformers [PDF]
AAAI Conference on Artificial Intelligence, 2021 This paper explores a better prediction target for BERT pre-training of vision transformers. We observe that current prediction targets disagree with human perception judgment. This contradiction motivates us to learn a perceptual prediction target.
Xiaoyi Dong +8 more
semanticscholar +1 more source