An adaptive pre-emphasis technique with opposite directional training

Autor:	Chao Chen, Shigeki Ohtsuka, Takasuke Ito, Hironobu Akita, Nobuaki Matsudaira
Rok vydání:	2014
Předmět:	Engineering business.industry Control theory Frequency dispersion Dispersion (optics) Equalization (audio) Electronic engineering Training (meteorology) Automotive industry Equalizer Nyquist frequency business Actuator
Zdroj:	NEWCAS
Popis:	This paper presents a novel adaptive pre-emphasis technique for half-duplex communication in asymmetric systems between electronic control units (ECUs) and automotive actuators. Both an adaptive decision feedback equalizer (DFE) and a DFE-like pre-emphasis circuit are implemented in only ECU side in order to compensate frequency dispersion of the automotive-grade harness. By transmittng the traning pattern from the actuator, the coefficients of both DFE and DFE-like pre-emphasis circuit are determined, providing the same equalization characteristics. The proposed pre-emphasis technique enables the actuator to receive already equalized signals without equalization circuit in it. Our simulation results demonstrate more than 200% improvement of the eye openinig for 400Mbps communication with a 5-m harness of more than 10-dB dispersion at the Nyquist frequency.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::8ac072f415bc392f9de910e6d4a7e8af https://doi.org/10.1109/newcas.2014.6934014 Zobrazit plný text záznamu