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In this paper, new digital predistortion (DPD) solutions for power amplifier (PA) linearization are proposed, with particular emphasis on reduced processing complexity in future 5G and beyond wideband radio systems. The first proposed…

Signal Processing · Electrical Eng. & Systems 2020-07-03 Pablo Pascual Campo , Alberto Brihuega , Lauri Anttila , Matias Turunen , Dani Korpi , Markus Allén , Mikko Valkama

With the rise in communication capacity, deep neural networks (DNN) for digital pre-distortion (DPD) to correct non-linearity in wideband power amplifiers (PAs) have become prominent. Yet, there is a void in open-source and…

Machine Learning · Computer Science 2024-09-04 Yizhuo Wu , Gagan Deep Singh , Mohammadreza Beikmirza , Leo C. N. de Vreede , Morteza Alavi , Chang Gao

In massive MIMO base stations, power consumption and cost of the low-noise amplifiers (LNAs) can be substantial because of the many antennas. We investigate the feasibility of inexpensive, power efficient LNAs, which inherently are less…

Information Theory · Computer Science 2018-06-21 Christopher Mollén , Ulf Gustavsson , Thomas Eriksson , Erik G. Larsson

We present a novel Deep Neural Network (DNN) architecture for non-linear system identification. We foster generalization by constraining DNN representational power. To do so, inspired by fading memory systems, we introduce inductive bias…

Machine Learning · Computer Science 2021-06-08 Luca Zancato , Alessandro Chiuso

While Graph Neural Networks (GNNs) are popular in the deep learning community, they suffer from several challenges including over-smoothing, over-squashing, and gradient vanishing. Recently, a series of models have attempted to relieve…

Machine Learning · Computer Science 2022-11-18 Junxiang Wang , Hongyi Li , Zheng Chai , Yongchao Wang , Yue Cheng , Liang Zhao

Despite the intensive recent research on wireless single-channel full-duplex communications, relatively little is known about the transceiver chain nonidealities of full-duplex devices. In this paper, the effect of nonlinear distortion…

Information Theory · Computer Science 2014-08-05 Dani Korpi , Taneli Riihonen , Ville Syrjälä , Lauri Anttila , Mikko Valkama , Risto Wichman

Neural networks (NNs) inspired by the forward-backward algorithm (FBA) are used as equalizers for bandlimited channels with a memoryless nonlinearity. The NN-equalizers are combined with successive interference cancellation (SIC) to…

Information Theory · Computer Science 2024-08-29 Daniel Plabst , Tobias Prinz , Francesca Diedolo , Thomas Wiegart , Georg Böcherer , Norbert Hanik , Gerhard Kramer

With the rise of artificial intelligence in recent years, Deep Neural Networks (DNNs) have been widely used in many domains. To achieve high performance and energy efficiency, hardware acceleration (especially inference) of DNNs is…

Distributed, Parallel, and Cluster Computing · Computer Science 2020-01-17 Linghao Song , Jiachen Mao , Youwei Zhuo , Xuehai Qian , Hai Li , Yiran Chen

The large untapped spectrum in sub-THz allows for ultra-high throughput communication to realize many seemingly impossible applications in 6G. Phase noise (PN) is one key hardware impairment, which is accentuated as we increase the…

Signal Processing · Electrical Eng. & Systems 2024-06-28 Dileepa Marasinghe , Le Hang Nguyen , Jafar Mohammadi , Yejian Chen , Thorsten Wild , Nandana Rajatheva

With the wide and deep adoption of deep learning models in real applications, there is an increasing need to model and learn the representations of the neural networks themselves. These models can be used to estimate attributes of different…

Computer Vision and Pattern Recognition · Computer Science 2023-03-24 Yun Yi , Haokui Zhang , Wenze Hu , Nannan Wang , Xiaoyu Wang

Neural Networks (NNs) are steering a new generation of artificial intelligence (AI) applications at the micro-edge. Examples include wireless sensors, wearables and cybernetic systems that collect data and process them to support real-world…

Signal Processing · Electrical Eng. & Systems 2021-03-17 Sergey Mileiko , Thanasin Bunnam , Fei Xia , Rishad Shafik , Alex Yakovlev , Shidhartha Das

Distillation is a unit operation with multiple input parameters and multiple output parameters. It is characterized by multiple variables, coupling between input parameters, and non-linear relationship with output parameters. Therefore, it…

Chemical Physics · Physics 2021-07-30 Chunli Li , Chunyu Wang

Nowadays computational complexity of fast walsh hadamard transform and nonlinearity for Boolean functions and large substitution boxes is a major challenge of modern cryptography research on strengthening encryption schemes against linear…

Cryptography and Security · Computer Science 2020-04-27 Behrooz Khadem , Reza Ghasemi

This paper studies the approximation capabilities of neural networks that combine layer normalization (LN) with linear layers. We prove that networks consisting of two linear layers with parallel layer normalizations (PLNs) inserted between…

Machine Learning · Computer Science 2026-02-10 Yunhao Ni , Yuxin Guo , Yuhe Liu , Wenxin Sun , Jie Luo , Wenjun Wu , Lei Huang

Variational inference offers scalable and flexible tools to tackle intractable Bayesian inference of modern statistical models like Bayesian neural networks and Gaussian processes. For largely over-parameterized models, however, the…

Machine Learning · Statistics 2019-12-03 Simone Rossi , Sebastien Marmin , Maurizio Filippone

Primary motivation for this work was the need to implement hardware accelerators for a newly proposed ANN structure called Auto Resonance Network (ARN) for robotic motion planning. ARN is an approximating feed-forward hierarchical and…

Neural and Evolutionary Computing · Computer Science 2024-02-02 Shilpa Mayannavar , Uday Wali

In this paper, we develop a framework to investigate the performances of different hybrid beamforming architectures for massive multiple input multiple output (MIMO) systems impaired by power amplifier (PA) nonlinearities. Indirect learning…

Information Theory · Computer Science 2021-03-01 Murat Babek Salman , Gokhan Muzaffer Guvensen

In the mid-second decade of new millennium, the development of IT has reached unprecedented new heights. As one derivative of Moore's law, the operating system evolves from the initial 16 bits, 32 bits, to the ultimate 64 bits. Most modern…

Distributed, Parallel, and Cluster Computing · Computer Science 2017-09-21 Yi Lu

We propose a new integrated method of exploiting model, batch and domain parallelism for the training of deep neural networks (DNNs) on large distributed-memory computers using minibatch stochastic gradient descent (SGD). Our goal is to…

Machine Learning · Computer Science 2018-05-17 Amir Gholami , Ariful Azad , Peter Jin , Kurt Keutzer , Aydin Buluc

Over-parameterized models, such as DeepNets and ConvNets, form a class of models that are routinely adopted in a wide variety of applications, and for which Bayesian inference is desirable but extremely challenging. Variational inference…

Machine Learning · Statistics 2020-11-24 Simone Rossi , Sebastien Marmin , Maurizio Filippone