Broadband Investigate

Stationary Interference Cancellation in Upstream Coordinated DSL Using a Turbo-MMSE Receiver

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Executive Summary

The authors investigate the scenario of an upstream coordinated DSL transmission in presence of spatial-correlated noise. Joint signal processing helps mitigate this noise and reduce internal interference effects between coordinated users. They propose to couple noise whitening with a mean-squared error iterative receiver in order to approach the matched filter bound of the DSL coordinated system. The convergence of the iterative scheme in this scenario is predicted using EXIT charts under realistic transmission conditions. Faced with the mounting need of residential and professional customers to benefit from new high data-rate multimedia services, access network operators are improving their offers thanks to diverse high-speed technologies.

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