NDLI: POR-based channel estimation for UWB communications

Content Provider	IEEE Xplore Digital Library
Author	Ping Liu Zhengyuan Xu
Copyright Year	2002
Abstract	In an ultrawideband (UWB) system, typically, a Rake receiver is employed to detect information symbols. To fully capture signal energy spread over multiple paths, the desired user's channel parameters are necessary. In this paper, we first convert a time-hopping (TH) UWB signal model using pulse position modulation (PPM) to a linear form similar to that of a code division multiple access (CDMA) system. Then, we apply a power-of-R (POR) technique to blindly estimate multipath parameters of the desired user in a multiple-access (MA) UWB system, where "R" represents the data covariance matrix. The POR technique is related to the subspace technique in that it directly estimates the unknown noise-subspace component in the subspace method but avoids rank estimation where errors may be incurred by perturbations in practical conditions. Performance of the proposed POR channel estimator is analyzed and shown to converge to that of the ideal subspace approach. Detection performance of the Rake receiver constructed from the estimated channel is also studied in terms of output signal-to-interference-plus-noise ratio (SINR) and bit error rate (BER). The proposed method demonstrates superiority to existing maximum-likelihood (ML)-based approaches in terms of either channel estimation or symbol detection. It also outperforms the subspace method for heavily loaded systems.
Starting Page	2968
Ending Page	2982
Page Count	15
File Size	379131
File Format	PDF
ISSN	15361276
Volume Number	4
Issue Number	6
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2005-11-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Channel estimation Ultra wideband communication Fading Multipath channels Pulse modulation Multiaccess communication Bit error rate Ultra wideband technology Energy capture Power system modeling ultrawideband (UWB) communication perturbation analysis power of subspace decomposition
Content Type	Text
Resource Type	Article
Subject	Applied Mathematics 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

Impact of MAI and channel estimation errors on the performance of Rake receivers in UWB communications

On fading margin in ultrawideband communications over multipath channels

On the Performance of UWB-IR With Interleaved Coding Modulation and Polarity Randomization on AWGN and Multipath Fading Channels

Bit error rate analysis in IEEE 802.15.3a UWB channels

Energy detection UWB system based on pulse width modulation

Large error performance of UWB ranging in multipath and multiuser environments

Performance of UWB $N$-Orthogonal PPM in AWGN and Multipath Channels

Impact of Channel Estimation on Ultra-Wideband System Design

A New Transmitted Reference Pulse Cluster System for UWB Communications

POR-based channel estimation for UWB communications

Similar Documents

Impact of MAI and channel estimation errors on the performance of Rake receivers in UWB communications

On fading margin in ultrawideband communications over multipath channels

On the Performance of UWB-IR With Interleaved Coding Modulation and Polarity Randomization on AWGN and Multipath Fading Channels

Bit error rate analysis in IEEE 802.15.3a UWB channels

Energy detection UWB system based on pulse width modulation

Large error performance of UWB ranging in multipath and multiuser environments

Performance of UWB $N$-Orthogonal PPM in AWGN and Multipath Channels

Impact of Channel Estimation on Ultra-Wideband System Design

A New Transmitted Reference Pulse Cluster System for UWB Communications

POR-based channel estimation for UWB communications