48 research outputs found
Time Reversal for Green Radio Communications
WWRF 29th meeting, Berlin.In this article, Time Reversal (TR) signal processing techniques are studied and evaluated over novel realistic green use cases. The principles of Time Reversal and practical uses cases for green communications are designed considering Long Term Evolution-Advanced Coordinated Multi-Point transmission/reception (LTE-A CoMP), Fast Session Transfer (FST) extensions and multi-Radio Access Technology (RAT) architectures foreseen as promising green networks. Dedicated TR use cases are defined in order to identify limit and advantages of TR in a green radio context
A low Complexity Wireless Gigabit Ethernet IFoF 60 GHz H/W Platform and Issues
6 pagesInternational audienceThis paper proposes a complete IFoF system architecture derived from simplified IEEE802.15.3c PHY layer proposal to successfully ensure near 1 Gbps on the air interface. The system architecture utilizes low complexity baseband processing modules. The byte/frame synchronization technique is designed to provide a high value of preamble detection probability and a very small value of the false detection probability. Conventional Reed-Solomon RS (255, 239) coding is used for Channel Forward Error Correction (FEC). Good communication link quality and Bit Error Rate (BER) results at 875 Mbps are achieved with directional antennas
Millimeter-wave Evolution for 5G Cellular Networks
Triggered by the explosion of mobile traffic, 5G (5th Generation) cellular
network requires evolution to increase the system rate 1000 times higher than
the current systems in 10 years. Motivated by this common problem, there are
several studies to integrate mm-wave access into current cellular networks as
multi-band heterogeneous networks to exploit the ultra-wideband aspect of the
mm-wave band. The authors of this paper have proposed comprehensive
architecture of cellular networks with mm-wave access, where mm-wave small cell
basestations and a conventional macro basestation are connected to
Centralized-RAN (C-RAN) to effectively operate the system by enabling power
efficient seamless handover as well as centralized resource control including
dynamic cell structuring to match the limited coverage of mm-wave access with
high traffic user locations via user-plane/control-plane splitting. In this
paper, to prove the effectiveness of the proposed 5G cellular networks with
mm-wave access, system level simulation is conducted by introducing an expected
future traffic model, a measurement based mm-wave propagation model, and a
centralized cell association algorithm by exploiting the C-RAN architecture.
The numerical results show the effectiveness of the proposed network to realize
1000 times higher system rate than the current network in 10 years which is not
achieved by the small cells using commonly considered 3.5 GHz band.
Furthermore, the paper also gives latest status of mm-wave devices and
regulations to show the feasibility of using mm-wave in the 5G systems.Comment: 17 pages, 12 figures, accepted to be published in IEICE Transactions
on Communications. (Mar. 2015
5G Radio Access above 6 GHz
Designing and developing a millimetre-wave(mmWave) based mobile Radio Access
Technology (RAT) in the 6-100 GHz frequency range is a fundamental component in
the standardization of the new 5G radio interface, recently kicked off by 3GPP.
Such component, herein called the new mmWave RAT, will not only enable extreme
mobile broadband (eMBB) services,but also support UHD/3D streaming, offer
immersive applications and ultra-responsive cloud services to provide an
outstanding Quality of Experience (QoE) to the mobile users. The main objective
of this paper is to develop the network architectural elements and functions
that will enable tight integration of mmWave technology into the overall 5G
radio access network (RAN). A broad range of topics addressing mobile
architecture and network functionalities will be covered-starting with the
architectural facets of network slicing, multiconnectivity and cells
clustering, to more functional elements of initial access, mobility, radio
resource management (RRM) and self-backhauling. The intention of the concepts
presented here is to lay foundation for future studies towards the first
commercial implementation of the mmWave RAT above 6 GHz.Comment: 7 pages, 5 figure
Definition and evaluation of Millimeter short range WPANs Physical layer Systems for Very High Data Rate Applications
International audienc
60 GHz Radio-Communications for Short Range Applications
TutorialInternational audienceThis tutorial presents an overview of propagation mechanisms and models for SRD at 60 GHz. An overview of PHY/MAC layer systems and IEEE802.15.3c standard is presented to position a novel PHY/MAC layer system operating alternatively in UWB bands and at 60 GHz
Ultra-Wideband MBOA PHY Layer Performance Analysis and Enhanced Issues (IST-MAGNET PROJECT)
International audienc
MIMO WLAN Link Budget assessments for IEEE802.11n
International audienceThis paper investigates MIMO WLAN technique assessments regarding the best trade-off between radio coverage extension and data rates. MIMO techniques are focused on selected MIMO techniques for the IEEE802.11n standard. Result prove that Spatial Expansion techniques and Sptatial spreading are the most outstanding techniques for data rates higher than 80 Mbps
Principes de la turbo-égalisation : application aux transmissions radio " Indoor " à 60 GHz
National audienc