Iteratively detected MIMO-OFDM twisted-pair transmission schemes

Abstract

Crosstalk between neighbouring wire pairs in multi-pair copper cables is an important disturbance, which essentially limits the transmission quality and the throughput of such cables. For high-rate transmission, often the strong near-end crosstalk (NEXT) disturbance is avoided or suppressed and only the far-end crosstalk (FEXT) remains as crosstalk influence. In this contribution the FEXT impact in iteratively detected MIMO-OFDM transmission schemes is studied. Extrinsic information transfer (EXIT) charts are used for analyzing and optimizing the convergence behaviour of the iterative demapping and decoding. Our results show that FEXT is not necessarily a limiting factor if appropriate signal processing strategies are used. © 2009 Springer-Verlag Berlin Heidelberg.