Zobrazeno 1 - 10
of 200
pro vyhledávání: '"L.J. Greenstein"'
Autor:
T.-S. Chu, L.J. Greenstein
Publikováno v:
IEEE Transactions on Vehicular Technology. 48:60-65
The median propagation loss in the personal communication services (PCSs) band (near 1.9 GHz) is generally recognized to be 9-10 dB greater than that in the cellular band (near 850 MHz). It would be highly desirable to make up this deficit in order t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3b3881023f310c4ea086a2e3b7b141b3
https://doi.org/10.1109/25.740060
https://doi.org/10.1109/25.740060
Autor:
S.L. Ariyavisitakul, L.J. Greenstein
Publikováno v:
IEEE Transactions on Vehicular Technology. 47:30-37
This paper presents a simple method for estimating the average local traffic load in a simulcast radio system. Such estimation is crucial to achieving efficient resource sharing and dynamic reconfiguration of the simulcast areas. The proposed method
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d44d8bcf4c998cd152f005f868001158
https://doi.org/10.1109/25.661029
https://doi.org/10.1109/25.661029
Publikováno v:
IEEE Transactions on Vehicular Technology. 46:279-288
We study how efficiently radio channel resources can be reused in microcellular networks. Our focus is on dense urban networks in which cell-site antennas are located well below the rooftops of surrounding buildings. Compared with conventional cellul
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::165f5df0cac2fff257b2f997e3915b94
https://doi.org/10.1109/25.580766
https://doi.org/10.1109/25.580766
Publikováno v:
IEEE Transactions on Vehicular Technology. 46:477-485
We derive a statistical model for the distribution of RMS delay spread (/spl tau//sub rms/) within a cellular environment, including the effects of base-to-mobile distance, environment type (urban, suburban, rural, and mountainous areas), and the cor
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::921a15aea2b61f17f298ff8f9b8b21e3
https://doi.org/10.1109/25.580786
https://doi.org/10.1109/25.580786
Autor:
L.J. Greenstein, Peter F. Driessen
Publikováno v:
IEEE Transactions on Communications. 43:2605-2612
We consider high-speed wireless indoor links in which narrowbeam antennas are used to limit multipath delay spread. For this kind of link, the performances of simple 2- and 4-level modulation schemes are analyzed. The amplitudes and phases of all mul
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d6b2681af959cf5f59b0f283db116873
https://doi.org/10.1109/26.469439
https://doi.org/10.1109/26.469439
Autor:
L.J. Greenstein, W.H. Tranter, Jørgen Bach Andersen, David G. Michelson, H.L. Bertoni, S. Kozono
Publikováno v:
IEEE Journal on Selected Areas in Communications. 20:493-495
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::41dbd5489658824449bcc7f09239dcc3
https://doi.org/10.1109/jsac.2002.995507
https://doi.org/10.1109/jsac.2002.995507
Autor:
G.J. Foschini, L.J. Greenstein
Publikováno v:
IEEE Transactions on Communications. 41:125-131
The required frequency spacings between channels in an optical frequency division multiplexing (FDM) network are considered. The minimum permissible spacings consistent with meeting bit error rate (BER) objectives are derived. The assumed transmissio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::df816547c3623d178b853855d76cb707
https://doi.org/10.1109/26.212372
https://doi.org/10.1109/26.212372
Autor:
Michael J. Gans, A.J. Rustako, Chih-Lin I, Ta-Shing Chu, L.J. Greenstein, G. Vannucci, G.J. Foschini, Reinaldo A. Valenzuela, N. Amitay, Leonard J. Cimini
Publikováno v:
IEEE Communications Magazine. 30:76-88
Research projects involving fiber-connected microcell base units, measurements and models of propagation in urban microcells, and radio link performance in urban microcells are summarized. Developments in microcell system issues, such as channel assi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3b8297cc1611b0d43b685df28697c5fd
https://doi.org/10.1109/35.210359
https://doi.org/10.1109/35.210359
Publikováno v:
IEEE Transactions on Vehicular Technology. 41:414-423
Cumulative distribution estimates are presented for the one-second-average bit-error-rate (BER) which would be experienced on UHF links in a microcellular environment. It is assumed that users (subscribers) are moving at speeds ranging from quasi-sta
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::004c7849d39cfbd7d96d541c2c3417ce
https://doi.org/10.1109/25.182592
https://doi.org/10.1109/25.182592
Autor:
T.M. Willis, L.J. Greenstein
Publikováno v:
2006 IEEE MTT-S International Microwave Symposium Digest.
In the early 1990's, AT&T engaged in an ambitious experimental program to evaluate the use of the 6 GHz band for wireless voice services. This paper summarizes some of the challenges faced in the trial, the experiments conducted to explore them and f
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7d39a9596d1948f23ddda75c5b62faf5
https://doi.org/10.1109/mwsym.2006.249803
https://doi.org/10.1109/mwsym.2006.249803