NDLI: On the Use of Wavelet-Based Denoising to Improve Power Delay Profile Estimates from 1.8 GHz Indoor Wideband Measurements

Content Provider	Springer Nature Link
Author	Dias, M. H. C. Siqueira, G. L.
Copyright Year	2005
Abstract	This work presents an alternative processing scheme to improve measurement-based power delay profiles (PDP) estimates, using wavelet-based denoising. The usual PDP processing comprises cutting off all the data below a previously determined flat noise threshold. The proposed method is a more refined approach, since it tries to extract the noise from the measured data, keeping only the estimated signal. Wavelet denoising can be performed in many different ways, for it depends on several parameters, like the noise threshold selection rule, the wavelet function, the choice or not for a wavelet coefficients shrinkage and the number of decomposition levels. Several parameter combinations have been tested, in special for the Visu selection rule, which presented the best performance for the available data in the overall. Denoising was applied to real data from indoor environments, collected from wideband channel sounding surveys, centered at 1.8 GHz. Since frequency domain sounding has been carried out, denoising has been tested both directly over the frequency domain, and over the time–delay domain (PDP). The major result of the proposed processing was a qualitative improvement of the PDP, with smoother noise floors, and also with increases up to 8 dB on signal-to-noise ratios, in special for delay domain denoising.
Starting Page	153
Ending Page	175
Page Count	23
File Format	PDF
ISSN	09296212
Journal	Wireless Personal Communications
Volume Number	32
Issue Number	2
e-ISSN	1572834X
Language	English
Publisher	Kluwer Academic Publishers
Publisher Date	2005-01-01
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	power delay profile indoor wideband channel wavelet denoising 1.8 GHz measurements Processor Architectures Electronic and Computer Engineering Signal, Image and Speech Processing
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering Computer Science Applications

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Wideband Propagation Measurements and Channel Implications for Indoor Broadband Wireless Local Area Networks at the 60 GHz Band

Characterization of the Indoor/Outdoor to Indoor MIMO Radio Channel at 2.140 GHz

On Ultra Wideband Indoor Channel Modeling Based on Generalized Gamma Distribution

Characterization of Vehicle-to-Vehicle Radio Channels from Measurements at 5.2 GHz

Performance Improvement by Microdiversity for Wideband Signals in Frequency Selective Fading Indoor Channels with Co-Channel Interference

A Dynamic Model of the Indoor Channel

Channel Sounding of Industrial Sites in the 2.4 GHz ISM band

Permittivity and Conductivity Measurements of Building Materials at 5.8 GHz and 41.5 GHz

A Comparison of Wideband Communication Characteristics for Various Corridors at 57.5 GHz

On the Use of Wavelet-Based Denoising to Improve Power Delay Profile Estimates from 1.8 GHz Indoor Wideband Measurements

Similar Documents

Wideband Propagation Measurements and Channel Implications for Indoor Broadband Wireless Local Area Networks at the 60 GHz Band

Characterization of the Indoor/Outdoor to Indoor MIMO Radio Channel at 2.140 GHz

On Ultra Wideband Indoor Channel Modeling Based on Generalized Gamma Distribution

Characterization of Vehicle-to-Vehicle Radio Channels from Measurements at 5.2 GHz

Performance Improvement by Microdiversity for Wideband Signals in Frequency Selective Fading Indoor Channels with Co-Channel Interference

A Dynamic Model of the Indoor Channel

Channel Sounding of Industrial Sites in the 2.4 GHz ISM band

Permittivity and Conductivity Measurements of Building Materials at 5.8 GHz and 41.5 GHz

A Comparison of Wideband Communication Characteristics for Various Corridors at 57.5 GHz

On the Use of Wavelet-Based Denoising to Improve Power Delay Profile Estimates from 1.8 GHz Indoor Wideband Measurements