C
Christian Berger
Researcher at Pontifical Catholic University of Chile
Publications - 213
Citations - 9012
Christian Berger is an academic researcher from Pontifical Catholic University of Chile. The author has contributed to research in topics: Orthogonal frequency-division multiplexing & Communication channel. The author has an hindex of 43, co-authored 196 publications receiving 7338 citations. Previous affiliations of Christian Berger include University of Mainz & Karlsruhe Institute of Technology.
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Do physical and relational aggression explain adolescents' friendship selection? The competing roles of network characteristics, gender, and social status.
TL;DR: The results show that selection effects of both physical and relational aggression disappeared when network effects, gender, and social status were taken into account, suggesting that similarity in aggression among friendships can be considered to be mainly a by-product rather than a leading dimension in friendship selection.
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Socio-emotional well-being and academic achievement: evidence from a multilevel approach
TL;DR: In this article, a multilevel perspective was adopted to test the association among Chilean elementary students, considering features at individual (socio-emotional well-being, self esteem, and social integration) and social levels (classroom social climate and social network characteristics).
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Frequency-Domain Oversampling for Zero-Padded OFDM in Underwater Acoustic Communications
TL;DR: This paper explores frequency-domain oversampling to improve the system performance of zero-padded OFDM transmissions over underwater acoustic channels with large Doppler spread, using a signal design that enables separate sparse channel estimation and data detection and rendering a low complexity receiver.
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Multi-Modal and Multi-Temporal Data Fusion: Outcome of the 2012 GRSS Data Fusion Contest
Christian Berger,M. Voltersen,Robert Eckardt,Jonas Eberle,T. Heyer,Nesrin Salepci,S. Hese,Christiane Schmullius,Junyi Tao,Stefan Auer,Richard Bamler,K. Ewald,Michael G. Gartley,J. Jacobson,A. Buswell,Qian Du,Fabio Pacifici +16 more
TL;DR: Three awarded research contributions investigate a new metric to assess urban density (UD) from multi-spectral and LiDAR data, and simulation-based techniques to jointly use SAR and Li DAR data for image interpretation and change detection and radiosity methods to improve surface reflectance retrievals of optical data in complex illumination environments.
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Optimizing Joint Erasure- and Error-Correction Coding for Wireless Packet Transmissions
TL;DR: This work investigates how to optimally combine the strengths of error- and erasure-correction coding to optimize the system performance with a given resource constraint, or to maximize the resource utilization efficiency subject to a prescribed performance.