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We show that a Modular Neural Network (MNN) can combine various speech enhancement modules, each of which is a Deep Neural Network (DNN) specialized on a particular enhancement job. Differently from an ordinary ensemble technique that…

Sound · Computer Science 2017-05-31 Minje Kim

Effective and adaptive interference management is required in next generation wireless communication systems. To address this challenge, Rate-Splitting Multiple Access (RSMA), relying on multi-antenna rate-splitting (RS) at the transmitter…

Signal Processing · Electrical Eng. & Systems 2022-12-21 Rafael Cerna Loli , Onur Dizdar , Bruno Clerckx , Cong Ling

We proposed a novel dense line spectrum super-resolution algorithm, the DMRA, that leverages dynamical multi-resolution of atoms technique to address the limitation of traditional compressed sensing methods when handling dense point-source…

Signal Processing · Electrical Eng. & Systems 2024-09-04 Mingguang Han , Yi Zeng , Xiaoguang Li , Tiejun Li

Rate-Splitting Multiple Access (RSMA) is an emerging flexible, robust and powerful multiple access scheme for downlink multi-antenna wireless networks. RSMA relies on multi-antenna Rate-Splitting (RS) strategies at the transmitter and…

Information Theory · Computer Science 2020-07-21 Onur Dizdar , Yijie Mao , Wei Han , Bruno Clerckx

Convolutional neural network (CNN) and its variants have led to many state-of-art results in various fields. However, a clear theoretical understanding about them is still lacking. Recently, multi-layer convolutional sparse coding (ML-CSC)…

Machine Learning · Computer Science 2020-07-22 Zhiyang Zhang , Shihua Zhang

In grant-free sparse code multiple access (GF-SCMA) system, active user detection (AUD) is a major performance bottleneck as it involves complex combinatorial problem, which makes joint design of contention resources for users and AUD at…

Systems and Control · Electrical Eng. & Systems 2022-08-09 Minsig Han , Ameha T. Abebe , Chung G. Kang

We present a practical strategy that aims to attain rate points on the dominant face of the multiple access channel capacity using a standard low complexity decoder. This technique is built upon recent theoretical developments of Zhu and…

Information Theory · Computer Science 2018-01-01 Erixhen Sula , Jingge Zhu , Adriano Pastore , Sung Hoon Lim , Michael Gastpar

One of the primary objectives for future wireless communication networks is to facilitate the provision of ultra-reliable and low-latency communication services while simultaneously ensuring the capability for vast connection. In order to…

Networking and Internet Architecture · Computer Science 2023-10-19 Tra Huong Thi Le , Yan Kyaw Tun

Network-coded multiple access (NCMA) is a communication scheme for wireless multiple-access networks where physical-layer network coding (PNC) is employed. In NCMA, a user encodes and spreads its message into multiple packets. Time is…

Information Theory · Computer Science 2014-10-13 Shenghao Yang , Soung Chang Liew , Lizhao You , Yi Chen

The strength of carrier-sense multiple access with collision avoidance (CSMA/CA) can be combined with that of time-division multiple access (TDMA) to enhance the channel access performance in wireless networks such as the IEEE…

Networking and Internet Architecture · Computer Science 2016-11-18 Bharat Shrestha , Ekram Hossain , Kae Won Choi

Two key challenges in underlay dynamic spectrum access (DSA) are how to establish an interference limit from the primary network (PN) and how cognitive radios (CRs) in the secondary network (SN) become aware of the interference they create…

Networking and Internet Architecture · Computer Science 2020-10-06 Fatemeh Shah-Mohammadi , Andres Kwasinski

To improve the accuracy of direction-of-arrival (DOA) estimation, a deep learning (DL)-based method called CDAE-DNN is proposed for hybrid analog and digital (HAD) massive MIMO receive array with overlapped subarray (OSA) architecture in…

Signal Processing · Electrical Eng. & Systems 2022-09-13 Yifan Li , Baihua Shi , Feng Shu , Yaoliang Song , Jiangzhou Wang

CSMA (Carrier Sense Multiple Access), which resolves contentions over wireless networks in a fully distributed fashion, has recently gained a lot of attentions since it has been proved that appropriate control of CSMA parameters guarantees…

Networking and Internet Architecture · Computer Science 2015-01-16 Se-Young Yun , Jinwoo Shin , Yung Yi

Low-power ambient backscatter communication (AmBC) relying on radio-frequency (RF) energy harvesting is an energy-efficient solution for batteryless Internet of things (IoT). However, ambient backscatter signals are severely faded by dyadic…

Information Theory · Computer Science 2018-06-11 Tae Yeong Kim , Dong In Kim

Conventional deep neural networks (DNN) for speech acoustic modeling rely on Gaussian mixture models (GMM) and hidden Markov model (HMM) to obtain binary class labels as the targets for DNN training. Subword classes in speech recognition…

Computation and Language · Computer Science 2017-09-07 Pranay Dighe , Afsaneh Asaei , Herve Bourlard

We consider a distributed learning problem in a wireless network, consisting of N distributed edge devices and a parameter server (PS). The objective function is a sum of the edge devices' local loss functions, who aim to train a shared…

Machine Learning · Computer Science 2021-10-11 Raz Paul , Yuval Friedman , Kobi Cohen

The p-persistent CSMA protocol is central to random-access MAC analysis, but predicting saturation throughput in heterogeneous multi-hop wireless networks remains a hard problem. Simplified models that assume a single, shared interference…

Machine Learning · Computer Science 2025-10-29 Faezeh Dehghan Tarzjani , Bhaskar Krishnamachari

In this work, we investigate the feasibility and effectiveness of employing deep learning algorithms for automatic recognition of the modulation type of received wireless communication signals from subsampled data. Recent work considered a…

Signal Processing · Electrical Eng. & Systems 2019-01-18 Sharan Ramjee , Shengtai Ju , Diyu Yang , Xiaoyu Liu , Aly El Gamal , Yonina C. Eldar

Orthogonal frequency division multiplexing (OFDM) based non-orthogonal multiple access (NOMA) has increased complexity and reduced spectral efficiency in visible light communications (VLC) NOMA compared to radiofrequency NOMA due to…

Signal Processing · Electrical Eng. & Systems 2020-11-24 T. Uday , Abhinav Kumar , L. Natarajan

Wideband spectrum sensing detects the unused spectrum holes for dynamic spectrum access (DSA). Too high sampling rate is the main problem. Compressive sensing (CS) can reconstruct sparse signal with much fewer randomized samples than…

Information Theory · Computer Science 2012-04-16 Yipeng Liu , Qun Wan