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Digital RFI Suppres...
Digital RFI Suppression in DMT-based VDSL Systems
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Sjöberg, Frank (author)
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- Nilsson, Rickard (author)
- Luleå tekniska universitet,Signaler och system
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- Börjesson, Per Ola (author)
- Lund University,Lunds universitet,Institutionen för elektro- och informationsteknik,Institutioner vid LTH,Lunds Tekniska Högskola,Department of Electrical and Information Technology,Departments at LTH,Faculty of Engineering, LTH
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- Ödling, Per (author)
- Lund University,Lunds universitet,Institutionen för elektro- och informationsteknik,Institutioner vid LTH,Lunds Tekniska Högskola,Department of Electrical and Information Technology,Departments at LTH,Faculty of Engineering, LTH
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Wiese, Brian (author)
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Bingham, John A. C. (author)
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(creator_code:org_t)
- 2004
- 2004
- English.
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In: IEEE Transactions on Circuits and Systems Part 1. - 1549-8328 .- 1558-0806. ; 51:11, s. 2300-2312
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http://dx.doi.org/10...
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Abstract
Subject headings
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- In this paper, we propose a method for suppressing radio frequency interference (RFI) in discrete multitone (DMT) based very high bit rate digital subscriber line (VDSL) systems. The method operates in the frequency domain of a DMT system. First, we derive a model of how an unknown narrow-band RF signal is mapped onto the DMT carriers. Then, by measuring the RFI on a few unused DMT carriers we are able to subtract RFI estimates from every modulated subcarrier. Simulation results show that this method, applied to an RFI signal with the same average power as the VDSL signal, suppresses the RFI with 40-50 dB, which reduces the average SNR loss from about 20 to less than 0.3 dB.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik -- Signalbehandling (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering -- Signal Processing (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering (hsv//eng)
Keyword
- Bit rate
- DSL
- Discrete Fourier transforms
- Filter bank
- Frequency
- Narrowband
- OFDM modulation
- Radiofrequency interference
- Wire
- Telecommunication standards
- Signalbehandling
- Signal Processing
- subscriber loops
- discrete multitone (DMT)
- radio frequency interference (RFI)
- very high bit rate digital subscriber line (VDSL)
Publication and Content Type
- ref (subject category)
- art (subject category)
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