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

2020 ◽  
Author(s):  
Paikun Zhu ◽  
Yuki Yoshida ◽  
Atsushi Kanno ◽  
Naokatsu Yamamoto ◽  
Ken-ichi Kitayama


2021 ◽  
Author(s):  
Mohammad Amin Kamaleddin ◽  
Nooshin Abdollahi ◽  
Stephanie Ratte ◽  
Steven A Prescott

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.



2014 ◽  
Vol 81 (1) ◽  
pp. 341-348 ◽  
Author(s):  
Fan Jiang ◽  
Danyu Wu ◽  
Lei Zhou ◽  
Yinkun Huang ◽  
Jin Wu ◽  
...  


2021 ◽  
Author(s):  
Xinyu Chen ◽  
Wei Ding ◽  
Yingying Wang ◽  
Shoufei Gao ◽  
Feixiang Xu ◽  
...  


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


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


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


2018 ◽  
Vol 35 (3) ◽  
pp. 16-39 ◽  
Author(s):  
Alon Kipnis ◽  
Yonina C. Eldar ◽  
Andrea J. Goldsmith


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