Ultra-Low-Latency, High-Fidelity Analog-to-Digital-Compression Radio-Over-Fiber (ADX-RoF) for MIMO Fronthaul in 5G and Beyond

2021 ◽  
Vol 39 (2) ◽  
pp. 511-519
Author(s):  
Paikun Zhu ◽  
Yuki Yoshida ◽  
Ken-ichi Kitayama
Keyword(s):  
Radio Over Fiber ◽  
Low Latency ◽  
High Fidelity ◽  
Analog To Digital ◽  
Digital Compression

scholarly journals High-fidelity indoor MIMO radio access for 5G and beyond based on legacy multimode fiber and real-time analog-to-digital-compression

2020 ◽  
Author(s):  
Paikun Zhu ◽  
Yuki Yoshida ◽  
Atsushi Kanno ◽  
Naokatsu Yamamoto ◽  
Ken-ichi Kitayama
Keyword(s):  
Real Time ◽  
High Fidelity ◽  
Multimode Fiber ◽  
Analog To Digital ◽  
Radio Access ◽  
Digital Compression

scholarly journals Spike initiation properties in the axon support high-fidelity signal transmission

2021 ◽  
Author(s):  
Mohammad Amin Kamaleddin ◽  
Nooshin Abdollahi ◽  
Stephanie Ratte ◽  
Steven A Prescott
Keyword(s):  
Pyramidal Neurons ◽  
Signal To Noise Ratio ◽  
Signal Transmission ◽  
Digital Signal ◽  
Axial Current ◽  
High Fidelity ◽  
Pass Filter ◽  
Analog To Digital ◽  
Spike Initiation ◽  
High Pass

The axon initial segment (AIS) converts graded depolarization into all-or-none spikes that are transmitted by the axon to downstream neurons. Analog-to-digital transduction and digital signal transmission call for distinct spike initiation properties (filters) and those filters should, therefore, differ between the AIS and distal axon. Here we show that unlike the AIS, which spikes repetitively during sustained depolarization, the axon spikes transiently and only if depolarization reaches threshold before KV1 channels activate. Rate of depolarization is critical. This was shown by optogenetically evoking spikes in the distal axon of CA1 pyramidal neurons using different photostimulus waveforms and pharmacological conditions while recording antidromically propagated spikes at the soma, thus circumventing the prohibitive difficulty of patching intact axons. Computational modeling shows that KV1 channels in the axon implement a high-pass filter that is matched to the axial current waveform associated with spike propagation, thus maximizing the signal-to-noise ratio to ensure high-fidelity transmission of spike-based signals.

A wideband calibration-free 1.5-GS/s 8-bit analog-to-digital converter with low latency

2014 ◽  
Vol 81 (1) ◽  
pp. 341-348 ◽  
Author(s):  
Fan Jiang ◽  
Danyu Wu ◽  
Lei Zhou ◽  
Yinkun Huang ◽  
Jin Wu ◽  
...  
Keyword(s):  
Low Latency ◽  
Analog To Digital Converter ◽  
Digital Converter ◽  
Analog To Digital ◽  
Calibration Free

scholarly journals High-fidelity, low-latency polarization quantum state transmissions over a hollow-core conjoined-tube fiber at around 800 nm

2021 ◽  
Author(s):  
Xinyu Chen ◽  
Wei Ding ◽  
Yingying Wang ◽  
Shoufei Gao ◽  
Feixiang Xu ◽  
...  
Keyword(s):  
Quantum State ◽  
Low Latency ◽  
High Fidelity ◽  
Hollow Core

scholarly journals Fundamental Distortion Limits of Analog-to-Digital Compression

2018 ◽  
Vol 64 (9) ◽  
pp. 6013-6033 ◽  
Author(s):  
Alon Kipnis ◽  
Yonina C. Eldar ◽  
Andrea J. Goldsmith
Keyword(s):  
Analog To Digital ◽  
Digital Compression

A comprehensive optical mobile fronthaul network toward high-fidelity, flexible and low-latency transport

2019 ◽  
Vol 37 (3) ◽  
pp. 322-334
Author(s):  
Weisheng Hu ◽  
Hao He ◽  
Kuo Zhang ◽  
Haiyun Xin ◽  
Longsheng Li ◽  
...  
Keyword(s):  
Low Latency ◽  
High Fidelity

scholarly journals High-fidelity and low-latency mobile fronthaul based on segment-wise TDM and MIMO-interleaved arraying

2018 ◽  
Vol 26 (2) ◽  
pp. 2079 ◽  
Author(s):  
Longsheng Li ◽  
Meihua Bi ◽  
Xin Miao ◽  
Yan Fu ◽  
Weisheng Hu
Keyword(s):  
Low Latency ◽  
High Fidelity

scholarly journals Analog-to-Digital Compression: A New Paradigm for Converting Signals to Bits

2018 ◽  
Vol 35 (3) ◽  
pp. 16-39 ◽  
Author(s):  
Alon Kipnis ◽  
Yonina C. Eldar ◽  
Andrea J. Goldsmith
Keyword(s):  
New Paradigm ◽  
Analog To Digital ◽  
Digital Compression
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