A practical noise mitigation scheme for DVB-T/H system using delay spread estimation

Author

Kang, Dong-Hyun ; Zhidkov, Sergey V. ; Choi, Hyung-Jin

Author_Institution

Sch. of Inf. & Commun. Eng., Sungkyunkwan Univ., Suwon, South Korea

Volume

56

Issue

1

fYear

2010

fDate

2/1/2010 12:00:00 AM

Firstpage

9

Lastpage

17

Abstract

In order to improve receiver performance in multipath channels, signal-to-noise ratio (SNR) should be maximized. In this paper, we propose and analyze several noise mitigation techniques for orthogonal frequency division multiplexing (OFDM) receivers, namely, the adaptive guard interval recycling algorithm and the adaptive interpolationbased channel estimation scheme. In realistic multipath environment, these techniques require accurate estimation of channel delay profile. Therefore, we also propose a robust and low-complexity channel impulse response analyzer for OFDM systems with lattice-type pilot arrangement. Extensive simulation results verify that the proposed techniques can improve bit error rate (BER) performance by maximizing SNR for a typical OFDM system such as digital video broadcasting -terrestrial and handheld (DVB-T/H) system¹.

Keywords

OFDM modulation; communication complexity; digital video broadcasting; error statistics; interference suppression; television receivers; BER; DVB-T/H System; OFDM receivers; OFDM systems; adaptive guard interval recycling algorithm; adaptive interpolation- based channel estimation scheme; bit error rate; channel delay profile; delay spread estimation; digital video broadcasting; handheld system; low-complexity channel impulse response analyzer; multipath channels; noise mitigation scheme; orthogonal frequency division multiplexing; receiver performance; signal-to-noise ratio; terrestrial system; Algorithm design and analysis; Bit error rate; Delay estimation; Delay systems; Digital video broadcasting; Multipath channels; OFDM; Recycling; Signal to noise ratio; Working environment noise; OFDM, noise reduction, multipath delay spread; channel impulse response;

fLanguage

English

Journal_Title

Consumer Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0098-3063

Type

jour

DOI

10.1109/TCE.2010.5439119

Filename

5439119