eprintid: 6322
rev_number: 2
eprint_status: archive
userid: 1
dir: disk0/00/00/63/22
datestamp: 2023-11-09 16:18:05
lastmod: 2023-11-09 16:18:05
status_changed: 2023-11-09 16:05:40
type: article
metadata_visibility: show
creators_name: Khan, A.M.
creators_name: Jeoti, V.
title: On time-domain OFDM channel estimation: Use of pilots correlation for digital video broadcasting (DVB) cable receiver
ispublished: pub
keywords: Cables; Channel estimation; Computer graphics; Cramer-Rao bounds; Digital video broadcasting (DVB); Discrete Fourier transforms; Fading channels; Frequency domain analysis; Frequency estimation; Impulse response; Mean square error; Multimedia systems; Orthogonal frequency division multiplexing; Signal receivers, Channel estimation algorithms; Channel impulse response; Cramer-rao bound (CRB); Low signal-to-noise ratio; OFDM channel estimation; Time and frequency domains; Time domain; Time-domain correlation, Signal to noise ratio
note: cited By 3
abstract: In this paper, an improved OFDM time domain channel estimation algorithm is proposed for (DVB) Cable receivers. The algorithm exploits time domain-pilot correlation (TD-PC) to estimate the channel impulse response (CIR). In this method, a certain combination of positive and negative sub-pilot tones is used to generate the null carriers in each OFDM symbol. The first set contains all positive periodic carriers; while the second contains negative carriers at null positions. Then we take advantage of these positive periodic sub-pilot carriers in time-domain correlation with received signal which gives rise to zero correlation of data to positive pilot subcarrier over the length of cyclic prefix. The performance of proposed TD-PC algorithm is evaluated under DVB-Cable-2 fading channel models in digital cable TV receivers. Simulation results show that the proposed algorithm provides better accuracy in term of Mean Square Error (MSE) over conventional time and frequency domain channel estimators. It is shown that proposed TD-PC algorithm has a comparable performance to Cramer-Rao bound (CRB) in low signal to noise ratio (SNR) regime. © 2015, National Institute of Optoelectronics. All rights reserved.
date: 2015
publisher: National Institute of Optoelectronics
official_url: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84933037738&partnerID=40&md5=c6fb6ff931dc6529328afb01721e8625
full_text_status: none
publication: Optoelectronics and Advanced Materials, Rapid Communications
volume: 9
number: 5-6
pagerange: 891-897
refereed: TRUE
issn: 18426573
citation:   Khan, A.M. and Jeoti, V.  (2015) On time-domain OFDM channel estimation: Use of pilots correlation for digital video broadcasting (DVB) cable receiver.  Optoelectronics and Advanced Materials, Rapid Communications, 9 (5-6).  pp. 891-897.  ISSN 18426573