Advancements in 5G new radio TDD cross link interference mitigation

…, Y Yuk, S Selvaganapathy, H Helmers - IEEE Wireless …, 2021 - ieeexplore.ieee.org
This article presents enhancements that further improve the performance of 5G New Radio
time division duplex (TDD) operation and performance. The focus is on mechanisms to …

Spatial phase shifting for pure in-plane displacement and displacement-derivative measurements in electronic speckle pattern interferometry (ESPI)

RS Sirohi, J Burke, H Helmers, KD Hinsch - Applied optics, 1997 - opg.optica.org
Hitherto no method, to our knowledge, was known to incorporate spatial phase shifting for the
measurement of pure in-plane displacements. We demonstrate that the modified Duffy two-…

Integrated laser Mach-Zehnder modulator on indium phosphide free of modulated-feedback

S Lovisa, N Bouche, H Helmers… - IEEE Photonics …, 2001 - ieeexplore.ieee.org
The main problem of integrated laser/Mach-Zehnder modulators is the modulated feedback
due to reflections on the output multimode image (MMI). We have solved this problem …

Performance of a compact, hybrid optical evanescent-wave sensor for chemical and biological applications

H Helmers, P Greco, R Rustad, R Kherrat, G Bouvier… - Applied Optics, 1996 - opg.optica.org
We describe a hybrid evanescent-wave sensor component that we fabricated by using an
integrated optical interferometer with a specially adapted photodetector array. The design of …

Centralized dynamic point blanking in LTE-advanced network for inter-cell interference mitigation

Z Xiong, M Zhang, H Helmers, M Baker… - 2015 IEEE 81st …, 2015 - ieeexplore.ieee.org
Dynamic Point Blanking (DPB) is a Coordinated MultiPoint (CoMP) technology that has
attracted significant interest for inter-cell interference mitigation in wireless communication …

[PDF][PDF] Integrated-optics interferometric sensors on glass for chemical applications

IS Duport, H Helmers, P Greco… - Sensors and …, 1996 - sensors.myu-group.co.jp
A new two-wave interferometer is realized in integrated optics. Spatially distributed interference
fringes give complete images of light absorption and phase variation in the interferometer…

Optical feedback modeling in Integrated Laser Mach-Zehnder modulators: Application to frequency chirp monitoring by AM measurements

P Brosson, SC Auzanneau, H Helmers… - … Digest. ISLC 1998 …, 1998 - ieeexplore.ieee.org
The feedback induced chirp in an integrated laser Mach-Zehnder modulator is for the first
time monitored by measuring the AM response of the laser and compared to theory. The …

17 Standardization, fora, and joint industrial projects on green radio networks

A Conte, H Helmers, P Sehier - Green Radio Communication …, 2012 - books.google.com
The urgent need to reduce the energy consumption of wireless ICT networks directly impacts
the work of all actors involved in this industry, and in particular the groups and fora in …

45nm tunability in C-band obtained with external cavity laser including sampled fibre Bragg grating

H Helmers, O Durand, GH Duan, E Gohin… - Electronics …, 2002 - search.proquest.com
A flat-response multi-peak sampled fibre Bragg grating has been realised using a novel
fabrication technique and has been used in a widely tunable hybrid semiconductor laser. The …

New integrated-optics interferometer in planar technology

IS Duport, P Benech, R Rimet - Applied Optics, 1994 - opg.optica.org
Glass ion exchange is an attractive method for fabricating integrated optical components.
We investigate the feasibility of making a single-mode glass ion-exchanged interferometer …