Results 51 to 60 of about 491,261 (311)

Low Complexity Turbo SIC-MMSE Detection for Orthogonal Time Frequency Space Modulation [PDF]

open access: yesIEEE Transactions on Communications
Recently, orthogonal time frequency space (OTFS) modulation has garnered considerable attention due to its robustness against doubly-selective wireless channels.
Qi Li   +4 more
semanticscholar   +1 more source

OTFS-NOMA: An Efficient Approach for Exploiting Heterogenous User Mobility Profiles [PDF]

open access: yes, 2019
This paper considers a challenging communication scenario, in which users have heterogenous mobility profiles, e.g., some users are moving at high speeds and some users are static.
Ding, Zhiguo   +3 more
core   +2 more sources

Separation of Parallel Encoded Complex-Valued Slices (SPECS) From A Single Complex-Valued Aliased Coil Image [PDF]

open access: yes, 2016
Purpose Achieving a reduction in scan time with minimal inter-slice signal leakage is one of the significant obstacles in parallel MR imaging. In fMRI, multiband-imaging techniques accelerate data acquisition by simultaneously magnetizing the spatial ...
Bruce, Iain P.   +4 more
core   +2 more sources

Time-frequency Domain Analogues of Phase Space Sub-Planck Structures

open access: yes, 2007
We present experimental data of the frequency resolved optical gating (FROG) measurements of light pulses revealing interference features corresponding to sub-Planck structures in phase space.
Czesław Radzewicz   +11 more
core   +1 more source

Hierarchically Guided Residual-Aware Equalization for Orthogonal Time Frequency Space Modulation

open access: yesIEEE Access
With the growing demand for high-mobility next-generation wireless environment, Orthogonal Time Frequency Space (OTFS) has emerged as the best transformative modulation technique due to its unique potential to provide reliable next-generation ...
B. M. Bergyl Jeslin, T. Deepa
doaj   +1 more source

Extended GFDM Framework: OTFS and GFDM Comparison

open access: yes, 2018
Orthogonal time frequency space modulation (OTFS) has been recently proposed to achieve time and frequency diversity, especially in linear time-variant (LTV) channels with large Doppler frequencies.
Chafii, Marwa   +3 more
core   +1 more source

Circularly Pulse Shaped Orthogonal Time Frequency Space Modulation

open access: yesCoRR, 2019
Orthogonal time-frequency space (OTFS) modulation is a recently proposed waveform for efficient data transfer in high-speed vehicular scenarios. The use of rectangular pulse shape in OTFS results in high out of band (OoB) radiation, which is undesirable for multi-user scenarios.
Shashank Tiwari, Suvra Sekhar Das
openaire   +2 more sources

Adaptive antennas at the mobile and base stations in an OFDM/TDMA system [PDF]

open access: yes, 2001
In recent years, several smart antenna systems have been proposed and demonstrated at the base station (BS) of wire-less communications systems, and these have shown that significant system performance improvement is possible.
Cheng, RSK, Wong, KK
core   +1 more source

Network divergence analysis identifies adaptive gene modules and two orthogonal vulnerability axes in pancreatic cancer

open access: yesMolecular Oncology, EarlyView.
Tumors contain diverse cellular states whose behavior is shaped by context‐dependent gene coordination. By comparing gene–gene relationships across biological contexts, we identify adaptive transcriptional modules that reorganize into distinct vulnerability axes.
Brian Nelson   +9 more
wiley   +1 more source

Polarization‐resolved femtosecond Vis/IR spectroscopy tailored for resolving weak signals in biological samples using minimal sample volume

open access: yesFEBS Open Bio, EarlyView.
Unique biological samples, such as site‐specific mutant proteins, are available only in limited quantities. Here, we present a polarization‐resolved transient infrared spectroscopy setup with referencing to improve signal‐to‐noise tailored towards tracing small signals. We provide an overview of characterizing the excitation conditions for polarization‐
Clark Zahn, Karsten Heyne
wiley   +1 more source

Home - About - Disclaimer - Privacy