Digital RFI suppression in DMT-based VDSL systems

F Sjoberg, R Nilsson, Per Ola Börjesson, Per Ödling, B Wiese, JAC Bingham

Forskningsoutput: TidskriftsbidragArtikel i vetenskaplig tidskriftPeer review

12 Citeringar (SciVal)

Sammanfattning

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.
Originalspråkengelska
Sidor (från-till)2300-2312
TidskriftIEEE Transactions on Circuits and Systems Part 1: Fundamental Theory and Applications
Volym51
Utgåva11
DOI
StatusPublished - 2004

Ämnesklassifikation (UKÄ)

  • Elektroteknik och elektronik

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