NDLI: Rician channel characterization in OFDM systems

Content Provider	IEEE Xplore Digital Library
Author	Pirsiavash, A. Emadi, M.J.
Copyright Year	2015
Description	Author affiliation: Fac. of Electr. & Comput. Eng., K.N. Toosi Univ. of Technol., Tehran, Iran (Pirsiavash, A.) \|\| Dept. of Electr. Eng., Amirkabir Univ. of Technol. (Tehran Polytech.), Tehran, Iran (Emadi, M.J.)
Abstract	Rician model is a stochastic channel model which is used for multipath propagation when line of sight (LOS) signal is much stronger than the other signals received from the other paths. In this paper we focus on Rician model of fading channel in Orthogonal Frequency Division Multiplexing (OFDM) systems and evaluate the effect of LOS signal on channel characterization. We show that LOS signal makes correlation between consequent covariance matrices which are used to estimate channel response in OFDM systems. As a result, a weighted average between covariance matrices can improve statistical properties and increase the accuracy of estimation in limited number of OFDM symbols. Motivated by the above idea, we propose a simple updating technique to get optimized performance on channel characterization. We investigate the asymptotic performance of the proposed estimator, i.e. normalized mean square error (NMSE) and Cramer-Rao bound (CRB), for large numbers of independent observations. The results clearly show the effectiveness of our proposed algorithm in estimating channel response as well as its improvement over the conventional techniques.
Starting Page	303
Ending Page	307
File Size	568277
Page Count	5
File Format	PDF
e-ISBN	9781479919727
DOI	10.1109/IranianCEE.2015.7146229
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-05-10
Publisher Place	Iran
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Electrical engineering OFDM Discrete Fourier transforms Estimation Updating algorithm Multipath propagation Covariance matrix Indexes Covariance matrices Rician channel characterization Orthogonal frequency-division multiplexing (OFDM) Descrete Fourier transform (DFT) and inverse discrete Fourier transform (IDFT) Line of sight signal (LOS) Frequency response
Content Type	Text
Resource Type	Article

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

Spectrally Precoded DFT-Based OFDM and OFDMA With Oversampling

A performance analysis of OFDM systems in excessively dispersive multipath channels

Evolution of Orthogonal Frequency Division Multiplexing Modulation to Discrete Wavelet Multitone

The MMSE Channel Estimation Based on DFT for OFDM System

Ofdm: orthogonal frequency division multiplexing ssj: symbol synchronization jitter fft: fast fourier transform dft: discrete fourier transform.

DHT-Based OFDM System for Passband Transmission Over Frequency-Selective Channel

Development of discrete Fourier transform-based channel estimation algorithms for a coherent optical orthogonal frequency division multiplexing transmission system

Novel OFDM Based on C-Transform for Improving Multipath Transmission

On the use of Zero Padding with discrete cosine transform Type-II in multicarrier communications

Rician channel characterization in OFDM systems

Similar Documents

Spectrally Precoded DFT-Based OFDM and OFDMA With Oversampling

A performance analysis of OFDM systems in excessively dispersive multipath channels

Evolution of Orthogonal Frequency Division Multiplexing Modulation to Discrete Wavelet Multitone

The MMSE Channel Estimation Based on DFT for OFDM System

Ofdm: orthogonal frequency division multiplexing ssj: symbol synchronization jitter fft: fast fourier transform dft: discrete fourier transform.

DHT-Based OFDM System for Passband Transmission Over Frequency-Selective Channel

Development of discrete Fourier transform-based channel estimation algorithms for a coherent optical orthogonal frequency division multiplexing transmission system

Novel OFDM Based on C-Transform for Improving Multipath Transmission

On the use of Zero Padding with discrete cosine transform Type-II in multicarrier communications

Rician channel characterization in OFDM systems