Zobrazeno 1 - 10
of 15
pro vyhledávání: '"Jonathan A. Hedstrom"'
Publikováno v:
IEEE Open Journal of the Communications Society, Vol 2, Pp 2436-2448 (2021)
Spatial-multiplexing multiple-input multiple-output (MIMO) systems have been developed and enhanced over the past two decades. In particular, a great amount of effort has gone towards development of capacity achieving detectors with affordable comput
Externí odkaz:
https://doaj.org/article/2aaa77cf7e7346238a0a0b7b5b5aaec2
Publikováno v:
IEEE Transactions on Wireless Communications. 16:7718-7732
We introduce a revised derivation of the bitwise Markov Chain Monte Carlo (MCMC) multiple-input multiple-output (MIMO) detector. The new approach resolves the previously reported high SNR stalling problem of MCMC without the need for hybridization wi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a1faa9819470de6f6f8844f76059ca58
https://doi.org/10.1109/twc.2017.2750667
https://doi.org/10.1109/twc.2017.2750667
Publikováno v:
ICC
The development of low complexity, high performance spatial-multiplexing MIMO detectors continues to be an important area of research capable of increasing the spectral efficiency and capacity of wireless networks. The Markov Chain Monte Carlo (MCMC)
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1ae9f76b833975c9d63b931a9019bff3
https://doi.org/10.1109/icc.2017.7996951
https://doi.org/10.1109/icc.2017.7996951
Publikováno v:
ICC
There is a strong need in wireless communication systems for better, low-complexity detectors. Here we demonstrate the implementation, simulation, and real-world measurements of such a near-optimal approximate ML method called Markov Chain Monte Carl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::464c3c4c9793d707146bb17e08a8c097
https://doi.org/10.1109/icc.2015.7249090
https://doi.org/10.1109/icc.2015.7249090
Autor:
Jonathan A. Hedstrom, Dinghai Huang, J. Sun, B. Lahlouh, Sindee L. Simon, Hyungjun Kim, W. Volksen, J.A. Lubguban, N. Biswas, Michael F. Toney, Anupama Mallikarjunan, T. Rajagopalan, Shubhra Gangopadhyay, R. D. Miller
Publikováno v:
Journal of Materials Research. 19:3224-3233
We present a supercritical CO2(SCCO2) process for the preparation of nanoporous organosilicate thin films for ultralow dielectric constant materials. The porous structure was generated by SCCO2extraction of a sacrificial poly(propylene glycol) (PPG)
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8dd746a932cf470364ef7bd67147e950
https://doi.org/10.1557/jmr.2004.0413
https://doi.org/10.1557/jmr.2004.0413
Publikováno v:
Journal of Applied Physics. 93:9902-9907
We describe structural and magnetic measurements of polycrystalline, L10 chemically ordered Fe(55–60)Pt(45–40) films as a function of film thickness (from 3 to 13 nm) and growth temperature (270–370 °C). With increasing film thickness, the coe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a533f634c460c6be6d81c35fef527c42
https://doi.org/10.1063/1.1577226
https://doi.org/10.1063/1.1577226
Autor:
Matthew J. Carey, R. Stephenson, P. M. Rice, Jonathan A. Hedstrom, Michael F. Toney, R. F. C. Farrow, Ronald Franklin Marks, Andrew J. Kellock
Publikováno v:
Journal of Applied Physics. 93:5626-5636
We report a phase instability in oxygen-plasma-assisted molecular beam epitaxy of Fe3O4 films on sapphire (0001) substrates. Under a wide range of growth conditions, Fe3O4(111) films phase separate, on a nanometer length scale, into Fe3O4, FeO and me
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0e151ec28385c816b255b7ffe9f38309
https://doi.org/10.1063/1.1556174
https://doi.org/10.1063/1.1556174
Autor:
Andrew J. Kellock, Michael F. Toney, Daniele Mauri, W.Y. Lee, Jonathan A. Hedstrom, Matthew J. Carey
Publikováno v:
IEEE Transactions on Magnetics. 38:3536-3539
We studied the effects of Mn concentration (C/sub Mn/) in PtMn antiferromagnets (AFs) and the deposition temperature (T/sub s/) of PtMn in bottom PtMn spin valves. The exchange coupling field (H/sub ua/) and the critical thickness of PtMn were found
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::27775524e2509f9fd19c9322f8e8f3af
https://doi.org/10.1109/tmag.2002.802731
https://doi.org/10.1109/tmag.2002.802731
Autor:
Emily L. Allen, Wen-Y. Lee, Walter L. Prater, Jonathan A. Hedstrom, Jonathan Daniels, Michael F. Toney
Publikováno v:
Applied Physics Letters. 84:2518-2520
We report on the electrical resistance and microstructure of sputter deposited copper thin films grown in an oxygen containing ion-beam sputtering atmosphere. For films thinner than 5 nm, 6%–10% oxygen causes a minimum in film resistivity, while fo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::454066f08b3fc960f1da760ab689855a
https://doi.org/10.1063/1.1691500
https://doi.org/10.1063/1.1691500
Publikováno v:
Biophysical journal. 94(12)
We have conducted experiments quantitatively investigating electroporative uptake kinetics of a fluorescent plasma membrane integrity indicator, propidium iodide (PI), in HL60 human leukemia cells resulting from exposure to 40μs pulsed electric fiel
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e6c46bcc26a3d9f15c28875b683ebed1
https://pubmed.ncbi.nlm.nih.gov/18339761
https://pubmed.ncbi.nlm.nih.gov/18339761