Zobrazeno 1 - 10
of 10
pro vyhledávání: '"Chi-Kai Hsieh"'
Publikováno v:
Applied Sciences, Vol 11, Iss 9, p 4135 (2021)
This paper studies the problem of joint power allocation and user association in wireless heterogeneous networks (HetNets) with a deep reinforcement learning (DRL)-based approach. This is a challenging problem since the action space is hybrid, consis
Externí odkaz:
https://doaj.org/article/db51781b816949d0b1fb1917ffa1578c
Autor:
Chi-Kai Hsieh, 謝繼開
96
A low phase noise and low DC power consumption VCO is indispensable in modern communication systems. Due to the demand for high data transmission drives in high frequency systems, a high frequency oscillator with low phase noise and low DC po
A low phase noise and low DC power consumption VCO is indispensable in modern communication systems. Due to the demand for high data transmission drives in high frequency systems, a high frequency oscillator with low phase noise and low DC po
Externí odkaz:
http://ndltd.ncl.edu.tw/handle/96419852975357028529
Publikováno v:
IEEE Transactions on Communications. 69:5471-5486
This paper studies the problem of developing an efficient signal sampling framework for distributed blind spectrum sensing, together with the corresponding local cognitive radio (CR) decision and fusion rules. A novel collaborative sampling and binar
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::17e2261bac6a72da905ed47efd0e3392
https://doi.org/10.1109/tcomm.2021.3077061
https://doi.org/10.1109/tcomm.2021.3077061
Publikováno v:
ICASSP
In this paper, we study the problem of blind spectrum sensing by exploring signal sampling at each cognitive radio (CR) in a distributed cognitive radio network. Specifically, a new cooperative sampling scheme is proposed to deal with the challenge o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1605d1c93183d3ea0422d2f86f9bb08a
https://doi.org/10.1109/icassp40776.2020.9054544
https://doi.org/10.1109/icassp40776.2020.9054544
Publikováno v:
IEEE Microwave and Wireless Components Letters. 19:110-112
A broadband balanced distributed frequency doubler fabricated by 0.35 mum SiGe BiCMOS technology is developed to operate from 4 to 18 GHz output frequency. This balanced doubler consists of an active balun and a distributed doubler. A sharing collect
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c0bb4151555e0f040f29b1608eb64374
https://doi.org/10.1109/lmwc.2008.2011336
https://doi.org/10.1109/lmwc.2008.2011336
Publikováno v:
2009 IEEE MTT-S International Microwave Symposium Digest.
A K-band low-power, low phase noise modified Colpitts VCO was implemented in 0.13 µm CMOS process. The timed current switches of the conventional Colpitts VCO are replaced by a differential transformer, and thus the supply voltage of the proposed VC
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b5b48ea40e9e860b9c2e645aac68eb5e
https://doi.org/10.1109/mwsym.2009.5165941
https://doi.org/10.1109/mwsym.2009.5165941
Publikováno v:
2009 IEEE Radio Frequency Integrated Circuits Symposium.
An ultra-low-power VCO based on the complementary cross-coupled structure with the three-coil transformer feedback is proposed and realized in 0.18 µm CMOS. This VCO has a 1 MHz offset phase noise of −118.5 dBc/Hz and consumes only 0.66 mW dc cons
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8924d9b125e3482facea1791e87198cc
https://doi.org/10.1109/rfic.2009.5135497
https://doi.org/10.1109/rfic.2009.5135497
Publikováno v:
2009 IEEE Radio Frequency Integrated Circuits Symposium; 2009, p91-94, 4p
Publikováno v:
2009 IEEE MTT-S International Microwave Symposium Digest; 2009, p1293-1296, 4p
Publikováno v:
IEEE Microwave & Wireless Components Letters; Feb2009, Vol. 19 Issue 2, p110-112, 3p