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Digital Pre-Distortion of Carrier Frequency Offset for Reliable Wi-Fi Enabled IoTs

Il-Gu Lee
2017 Future Internet  
Therefore, to improve robustness and reliability, WiFi-enabled IoT devices have been developed to use narrowband communication.  ...  However, narrowband transmission in WiFi such as IEEE 802.11ah causes relatively higher frequency error due to the reduced subcarrier space, which is larger than legacy wireless local area networks (WLANs  ...  transmitted through a wireless channel in a wireless communication system.  ... 
doi:10.3390/fi9030046 fatcat:hix6bmme2fb2vg7cwbjhm3mqha

Guest Editorial Signal Processing For Wireless Communications

Y. Li, K.J.R. Liu, J.H. Winters, J.B. Andersen
1998 IEEE Journal on Selected Areas in Communications  
SELECTED TOPICS Other applications of signal processing in wireless communications are presented in this section.  ...  Interference between narrowband and CDMA systems is studied in the next two papers, with the paper by Gelli et al. using cyclostationarity-based filtering to reduce narrowband Publisher Item Identifier  ... 
doi:10.1109/jsac.1998.737629 fatcat:u7i54z2j6rfexnpndzrdp2tu7q

Introduction to Ultra Wideband [chapter]

Hüseyin Arslan, Maria-Gabriella Di Benedetto
2005 Ultra Wideband Wireless Communication  
Unfortunately, the mechanisms that govern radio propagation in a wireless communication channel are complex and diverse.  ...  Narrowband interference issues will be discussed in detail in Chapter 11, "Narrowband Interference Issues in Ultra Wideband Systems."  ... 
doi:10.1002/9780470042397.ch1 fatcat:6okhwnhrn5awjaykl3fb3ln46e

Biomedical Signal Transmission using OFDM-based Cognitive Radio for Wireless

S. Mohandass
2014 The Smart Computing Review  
channel.  ...  This concept can be used in wireless healthcare applications where medical information can be transferred through wireless networks for remote medical procedures or examinations.  ...  A CR transceiver is a form of wireless communication system that detects occupied and unused communication channels in a wireless spectrum, and instantly moves into unused channels while avoiding occupied  ... 
doi:10.6029/smartcr.2014.03.002 fatcat:bbm32qwzbnhvxcso4tf3n2w7aq

Physiological State Monitoring System of the Home Elderly Based on Multi-frequency Narrowband Power Line Communications

Xujia Wang, Liang Dong
2013 Sensors & Transducers  
The system combines wireless sensor network and narrowband power line communication method, realizes the real-time monitoring and transmission of the physiological status of the home elderly.  ...  This scheme overcomes the weakness that the traditional monitoring system using wireless network signal alone, there is no signal in the shielding area, then realizes no blind angle control in buildings  ...  In view of the above situation, this paper designs a kind of physiological data monitoring system,which based on wireless sensor network and narrowband power line communication.  ... 
doaj:ec7d2763d5a24e6eb04c4e29be6adfa4 fatcat:ed4fo7tbcfdhhdjlqhqsipjzo4

Modeling, Real-Time Estimation, and Identification of UWB Indoor Wireless Channels

Mohammed M. Olama, Seddik M. Djouadi, Yanyan Li, Aly Fathy
2013 International Journal of Antennas and Propagation  
We show that the impulse responses for time-varying indoor wireless channels can be approximated in a mean-square sense as close as desired by impulse responses that can be realized by SDEs.  ...  Stochastic differential equations (SDEs) are used to model ultrawideband (UWB) indoor wireless channels.  ...  Also, this work was supported in part by NSF Grant no. CMMI-1334094.  ... 
doi:10.1155/2013/467670 fatcat:djgpae5gj5ha7e5qhbqkewzxpy

Proposal of a multi-standard transceiver for the WBAN Internet of Things

Jianxiao Yang, Benoit Geller, Tarak Arbi
2016 2016 International Symposium on Signal, Image, Video and Communications (ISIVC)  
In this paper, an original physical layer design of the IEEE 802.15.6 narrowband receiver is proposed, including frame synchronization, timing synchronization, and carrier frequency synchronization.  ...  This proposed single-carrier system can be incorporated into a conventional multi-carrier system of the IEEE 802.11 transceiver by reusing its hardware resource.  ...  Acknowledgement : This study was funded in part by the European project H2020 Bridges.  ... 
doi:10.1109/isivc.2016.7894017 dblp:conf/isivc/YangGA16 fatcat:lkwwyrcxhbfgxm3dc557ca7frq

CHANNEL ESTIMATION IN MOBILE WIRELESS SYSTEMS

RASHMI MOHAN, SAGAR S, THEJASWINI N, VARSHA P, AKSHAYA Y M, PRAMILA B
2019 INTERNATIONAL JOURNAL OF ELECTRONICS & COMMUNICATION ENGINEERING & TECHNOLOGY  
ABTRACT One of vital parts of the mobile wireless channel is channel estimation significantly improve the performance of the system, especially for 4G LTE and 5G systems.  ...  The main goal of this project is to test the time-variant channel estimation using F-OFDM model.  ...  The knowledge of the impulse response of mobile wireless propagation channels in the estimator is an aid in acquiring important information for testing, designing or planning wireless communication systems  ... 
doi:10.34218/ijecet.10.3.2019.001 fatcat:tr76n7x33jcqbl43j7jp26crvu

Semiblind Channel Estimation for Pulse-Based Ultra-Wideband Wireless Communication Systems

J. Cai, X.S. Shen, J.W. Mark, H. Liu, T.D. Todd
2006 IEEE Transactions on Vehicular Technology  
This paper proposes an H ∞ based semiblind channel estimation algorithm for pulse-based ultra-wideband (UWB) wireless communication systems.  ...  While the existing optimal filtering-based channel estimation schemes, which are optimized mostly for traditional narrowband or wideband systems, require a priori knowledge of the channel and noise statistics  ...  His research interests include channel estimation, interference cancellation, and resource management in wireless communication systems.  ... 
doi:10.1109/tvt.2005.861179 fatcat:wmt3vkcz6rhfbge4y4aroefcqu

Experimental evaluation of unsupervised channel deconvolution for wireless multiple-transmitter∕multiple-receiver systems

D. Samardzija, C. Papadias, R. Valenzuela
2002 Electronics Letters  
In this paper we demonstrate an experimental evaluation of unsupervised (i.e., blind) channel deconvolution that is based on the multi-user kurtosis (MUK) maximization criterion.  ...  We focus on the narrowband case and compare the performance of the MUK algorithm against the conventional trained linear MMSE and the V-BLAST algorithm.  ...  We have built a MTMR narrowband wireless test-bed that is used for verifications and performance evaluations of different algorithms related to the BLAST wireless communications architecture (e.g., [4  ... 
doi:10.1049/el:20020845 fatcat:6hnqschxtnfvbhwxornasdaurq

Multi-antenna testbeds for research and education in wireless communications

R.M. Rao, Wiejun Zhu, S. Lang, C. Oberli, D. Browne, J. Bhatia, J.-F. Fr, Jingming Wang, P. Gupta, Heechoon Lee, D.N. Liu, S.G. Wong (+3 others)
2004 IEEE Communications Magazine  
In our seven years of ABSTRACT Wireless communication systems present unique challenges and trade-offs at various levels of the system design process.  ...  Since a variety of performance measures are important in wireless communications, a family of testbeds becomes essential to validate the gains reported by theory.  ...  ACKNOWLEDGMENT The authors would like to thank all other people who helped in building these systems. It truly takes a team effort to succeed.  ... 
doi:10.1109/mcom.2004.1367558 fatcat:tc3asy6pojcchchyenhxlvfv3a

An empirical model for dual-diversity reception over fixed wireless channels in suburban macrocell environments

D.G. Michelson, V. Erceg, S.S. Ghassemzadeh, L.J. Greenstein
2009 IEEE Transactions on Wireless Communications  
Fixed wireless multipoint communication systems are increasingly being deployed in suburban macrocell environments, either to provide voice and data services to residences (wideband systems) or to supply  ...  Here, we show that a particularly simple yet complete first-order statistical characterization of two-branch diversity reception over fixed wireless channels can be given in terms of just five channel  ...  ACKNOWLEDGEMENTS We are indebted to numerous past and present AT&T colleagues and contractors for collecting and processing the large quantities of data used in this study. Stephano.  ... 
doi:10.1109/twc.2009.080853 fatcat:ac67p5xnund4lki7llkbkozu6a

Ultra-wideband wireless communications

Weihua Zhuang, Xuemin (Sherman) Shen, Qi Bi
2003 Wireless Communications and Mobile Computing  
Ultra-wideband (UWB) communication techniques have attracted a great interest in both academia and industry in the past few years for applications in short-range wireless mobile systems.  ...  with other narrowband wireless systems, design of the link and network layers to benefit from UWB transmission characteristics.  ...  Xu) at the Centre for Wireless Communications, University of Waterloo, for collecting previous publications on UWB which helped this research.  ... 
doi:10.1002/wcm.149 fatcat:4ta3hknr2jfoho4hw7ngkegb7u

Narrowband Interference Suppression in MIMO Systems [chapter]

Vladimir Poulkov, Miglen Ovtcharov, Georgi Iliev, Zlatka Nikolov
2011 MIMO Systems, Theory and Applications  
(OFDM) broad-band wireless and high speed wireline communication systems.  ...  NBI suppression in wireless MIMO OFDM systems Following some of the specific methods for NBI suppression in MIMO communication systems are discussed, such as adaptive beamforming of the antenna system,  ...  systems over MIMO channels.  ... 
doi:10.5772/14927 fatcat:3tvzhpkujvb2tapnk36gjdtsjm

Hybrid Powerline/Wireless Diversity for Smart Grid Communications: Design Challenges and Real-time Implementation [article]

Junmo Sung, Mostafa Sayed, Mahmoud Elgenedy, Brian L. Evans, Naofal Al-Dhahir, Il Han Kim, Khurram Waheed
2018 arXiv   pre-print
Narrowband power line communications (NB-PLC) and wireless communications in the unlicensed frequency band (sub-1 GHz or 2.4 GHz) are the two main communications systems adopted to support the growing  ...  In this article, we compare various diversity combining schemes for simultaneous power line and wireless transmissions.  ...  Narrowband power line communications (NB-PLC) and wireless communications in the unlicensed frequency band (sub-1 GHz or 2.4 GHz) are the two main communications systems adopted to support the growing  ... 
arXiv:1808.04530v1 fatcat:wekacrllszgfhi5ixzbruqjpjy
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