Challenges toward wireless communications for high-speed railway

B Ai, X Cheng, T Kürner, ZD Zhong… - IEEE transactions on …, 2014 - ieeexplore.ieee.org
High-speed railway (HSR) brings convenience to peoples' lives and is generally considered
as one of the most sustainable developments for ground transportation. One of the important …

System and methods to compensate for Doppler effects in multi-user (MU) multiple antenna systems (MAS)

A Forenza, SG Perlman - US Patent 9,312,929, 2016 - Google Patents
H04B7/0615—Diversity systems; Multi-antenna system, ie transmission or reception using
multiple antennas using two or more spaced independent antennas at the transmitting …

Position-based modeling for wireless channel on high-speed railway under a viaduct at 2.35 GHz

L Liu, C Tao, J Qiu, H Chen, L Yu… - IEEE Journal on …, 2012 - ieeexplore.ieee.org
This paper presents a novel and practical study on the position-based radio propagation
channel for High-Speed Railway by performing extensive measurements at 2.35 GHz in …

System and method for DIDO precoding interpolation in multicarrier systems

A Forenza, SG Perlman - US Patent 8,571,086, 2013 - Google Patents
a single WiFi base station (eg, utilizing 2.4 GHz 802.11 b, g or n protocols) attached to a
broadband wired Internet connection in an area where there are no other WiFi access points …

A survey of channel measurements and models for current and future railway communication systems

P Unterhuber, S Pfletschinger, S Sand… - Mobile Information …, 2016 - Wiley Online Library
Modern society demands cheap, more efficient, and safer public transport. These
enhancements, especially an increase in efficiency and safety, are accompanied by huge …

System and methods for planned evolution and obsolescence of multiuser spectrum

SG Perlman, A Forenza - US Patent 10,425,134, 2019 - Google Patents
A system and method are described which enable planned evolution and obsolescence of
multiuser wireless spectrum. One embodiment of such a system includes one or multiple …

System and method for distributed input distributed output wireless communications

A Forenza, RW Heath Jr, SG Perlman… - US Patent …, 2013 - Google Patents
(57) ABSTRACT A system for compensating for in-phase and quadrature (I/Q) imbalances
for multiple antenna systems (MAS) with multi user (MU) transmissions (de? ned with the …

System and method for adjusting DIDO interference cancellation based on signal strength measurements

A Forenza, SG Perlman - US Patent 8,170,081, 2012 - Google Patents
QEVHRUUCFGRFIF-MDEJGZGSSA-N reserpine Chemical compound O ([C@ H] 1 [C@@
H]([C@ H]([C@ H] 2C [C@@ H] 3C4= C (C5= CC= C (OC) C= C5N4) CCN3C [C@ H] 2C1) …

Towards realistic high-speed train channels at 5G millimeter-wave band—Part II: Case study for paradigm implementation

K Guan, B Ai, B Peng, D He, G Li, J Yang… - IEEE Transactions …, 2018 - ieeexplore.ieee.org
In this paper, we present two case studies for generating realistic high-speed train (HST)
channels at fifth-generation (5G) millimeter-wave (mmWave) band. The first one is the tunnel …

System and method for distributed antenna wireless communications

A Forenza, SG Perlman - US Patent 8,654,815, 2014 - Google Patents
H04B7/0615—Diversity systems; Multi-antenna system, ie transmission or reception using
multiple antennas using two or more spaced independent antennas at the transmitting …