Zobrazeno 1 - 10
of 109
pro vyhledávání: '"Douglas B. Williams"'
Optimal Estimation and Sequential Channel Equalization Algorithms for Chaotic Communications Systems
Autor:
Douglas B. Williams, Mahmut Ciftci
Publikováno v:
EURASIP Journal on Advances in Signal Processing, Vol 2001, Iss 4, Pp 249-256 (2001)
Many previously proposed communications systems based on chaos disregard common channel distortions and fail to work under realistic channel conditions. In this paper, optimal estimation and sequential channel equalization algorithms are proposed for
Externí odkaz:
https://doaj.org/article/3f75a4c9d60a478d9ffc227acefbe57e
Publikováno v:
IEEE Transactions on Aerospace and Electronic Systems. 53:2998-3007
For small radar platforms, the increase in signal-to-interference-plus-noise ratio (SINR) needed to support effective operation must come through integration of target signal energy collected over a long dwell time. Conventional radar processing assu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::921d30153ddb7e5d2e70dfc62530d9ed
https://doi.org/10.1109/taes.2017.2724358
https://doi.org/10.1109/taes.2017.2724358
Publikováno v:
IET Radar, Sonar & Navigation. 11:395-403
Improvements in target detection are typically achieved by increasing the signal-to-interference-plus-noise ratio (SINR) of the received signal. For a small radar platform with power and aperture constraints, increases in SINR must come through tempo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2ec2eb26003d10fdab84493b40ed3ab3
https://doi.org/10.1049/iet-rsn.2016.0082
https://doi.org/10.1049/iet-rsn.2016.0082
Publikováno v:
ACSSC
In recent years, hardware advances have resulted in software configurable radar systems that lend themselves well to decision-making systems. Partially observable Markov decision processes (POMDPs) are evaluated herein as a framework for decision-mak
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3f29133d05a69dac9a7c0a8a1dfc77e6
https://doi.org/10.1109/ieeeconf44664.2019.9048936
https://doi.org/10.1109/ieeeconf44664.2019.9048936
Publikováno v:
Interactive Collaborative Learning ISBN: 9783319503363
The Department of Electrical Engineering plans to run one of its basic courses, Introduction to Electrical Systems and Computation (EE 206), in Active Collaborative Learning (ACL) format. We have surveyed and examined several alternatives and flavors
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::83c4ba74e3eaffed6974c5da8a547cd3
https://doi.org/10.1007/978-3-319-50337-0_6
https://doi.org/10.1007/978-3-319-50337-0_6
Publikováno v:
Proceedings of the IEEE. 96:913-916
Much of the promise of educational technology lies in what can be done to aid the typical, non-remote student both in and out of the classroom.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1d44b7abb67017a0ce36c5fcb3e46a87
https://doi.org/10.1109/jproc.2008.921604
https://doi.org/10.1109/jproc.2008.921604
Autor:
Douglas B. Williams, Jingnong Yang
Publikováno v:
IEEE Transactions on Communications. 55:1629-1639
This paper describes a feedback algorithm for tracking the dominant subspaces of continuously time-varying channels in multiantenna communication systems. The nature of the problem is quantization of subspaces. It is well known that subspaces can be
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b01fdd31ff6f5517154197f5469dcdd2
https://doi.org/10.1109/tcomm.2007.902598
https://doi.org/10.1109/tcomm.2007.902598
Autor:
Douglas B. Williams, Daniel Drake
Publikováno v:
IEEE Transactions on Signal Processing. 55:1379-1389
Although there may be some disagreement as to the precise definition of chaos, it is generally characterized as a nonlinear, deterministic phenomenon. For a class of common chaotic systems, this paper introduces equivalent descriptions in the form of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::57573f223bba64be67e9a5e315f068bb
https://doi.org/10.1109/tsp.2006.888885
https://doi.org/10.1109/tsp.2006.888885
Publikováno v:
2015 IEEE Radar Conference (RadarCon).
Output signal-to-interference-plus-noise ratio (SINR) can be increased by extending the dwell time or coherent processing interval (CPI) over which target signal energy is integrated. However, over a long dwell time, nonlinear phase components in the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::315c0236506fdfa5292da23824317586
https://doi.org/10.1109/radar.2015.7131047
https://doi.org/10.1109/radar.2015.7131047
Publikováno v:
2015 IEEE Radar Conference (RadarCon).
Temporal weights used in element-space pre- Doppler STAP ideally maximize the magnitude and frequency coverage of the pre-Doppler temporal output signal. Maximizing the magnitude of the temporal output signal is critical for detection of weak targets
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::33b04cdcdeee1d166b686b16b8c8feb5
https://doi.org/10.1109/radar.2015.7131046
https://doi.org/10.1109/radar.2015.7131046