Paper Info
Title
Sensitivity of nonlinear precoding to imperfect channel state information in G.fast.
Abstract
Nonlinear Tomlinson-Harashima precoding has been proposed as a near-optimal interference mitigation technique for downstream transmission in G. fast systems, particularly in the transmit spectrum above 106 MHz. We propose an alternative implementation of Tomlinson-Harashima precoding and examine performance of the common and alternative implementations with respect to quantization errors and imperfect channel state information. We show that Tomlinson-Harashima precoding is more sensitive than optimized linear precoding to varying channel state information due to fluctuations in ambient conditions and sudden changes in termination impedance. We also show that Tomlinson-Harashima precoding only outperforms optimized linear precoding when the channel state information is almost perfectly known.
Year
Venue
Keywords
2016
European Signal Processing Conference
G.fast,nonlinear precoding,Tomlinson-Harashima,Precoding,vectoring,sudden termination change
Field
DocType
ISSN
Spatial correlation,Nonlinear system,Computer science,Control theory,Matrix decomposition,Interference (wave propagation),Zero-forcing precoding,Quantization (signal processing),Precoding,Channel state information
Conference
2076-1465
Citations 
PageRank 
References 
0
0.34
0
Authors
3
Name
Order
Citations
PageRank
J. Maes122323.33
Carl J. Nuzman2738.15
Paschalis Tsiaflakis333429.64