Zero-forcing and MMSE precoding for

Rainer Strobel, Andreas Barthelme, Wolfgang Utschick

Research output: Contribution to journalConference articlepeer-review

14 Scopus citations


Hybrid copper/fiber networks bridge the gap between the fiber link at the distribution point and the customer by using copper wires over the last meters. The transmission technology has been designed to be used in such a fiber to the distribution point (FTTdp) network. Crosstalk management using MIMO precoding in downlink and MIMO equalization in uplink is a key to the required performance of FTTdp. Currently, there are mostly linear and nonlinear zero-forcing (ZF) methods discussed for precoding in This paper presents a spectrum optimization algorithm for both zero-forcing precoding methods. Minimum mean squared error (MMSE) precoding shows significant advantages under certain channel conditions. A performance comparison of MMSE precoding for with linear and nonlinear zero-forcing methods indicates that MMSE precoding outperforms standard linear and nonlinear ZF precoding. Applying the proposed spectrum optimization brings all three methods to a similar performance.

Original languageEnglish
Article number7417707
JournalProceedings - IEEE Global Communications Conference, GLOBECOM
StatePublished - 2015
Event58th IEEE Global Communications Conference, GLOBECOM 2015 - San Diego, United States
Duration: 6 Dec 201510 Dec 2015


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