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The Global ETD Search service is a free service for researchers
to find electronic theses and dissertations. This service is
provided by the
Networked Digital Library of Theses and Dissertations.
Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
Search results
Showing 371 to 380 of 6195 (0.032 seconds)Spelling suggestions: "subject:"radio -"" "subject:"sadio -""
| 371 |
Intermodulation interference probabilities in cellular mobile radio systemsHu, Y. F. January 1987 (has links)
No description available.
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| 372 |
Propagation and interference studies in broadcast frequency bands in Nigeria : The refinement of propagation data in tropical Africa, enabling African Broadcast Network planners to minimise interference and maximise spectral utilisationNzeribe, F. C. F. January 1988 (has links)
No description available.
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| 373 |
Very high resolution radio observations of molecular cloud coresHeaton, B. D. January 1988 (has links)
No description available.
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| 374 |
Simulation study of a fully distributed Meteor Burst Communication networkZhang, Ning January 1991 (has links)
No description available.
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| 375 |
Large-scale structure via wide-area radio surveysBlake, Christopher January 2002 (has links)
No description available.
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| 376 |
Radio planning for future mobile communication networksKoshi, Virtyt January 1997 (has links)
No description available.
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| 377 |
Studies of hotspots in classical double radio sourcesBiggs, Litsa Maria January 2002 (has links)
No description available.
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| 378 |
Intermediate redshift radio galaxiesWeadock, Julie Louise January 1995 (has links)
No description available.
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| 379 |
A history of the BBC features department 1924-1964Thomas, Jeanette Ann January 1993 (has links)
No description available.
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| 380 |
Cooperative Cognitive Radio Networks: Spectrum Acquisition and Co-Channel Interference EffectAbu Alkheir, ALA 05 February 2013 (has links)
Cooperative Spectrum Sensing (CSS) allows Cognitive Radio Networks (CRNs) to locate
vacant spectrum channels and to protect active Primary Users (PUs). However,
the achieved detection accuracy is proportional to the duration of the CSS process
which, unfortunately, reduces the time of useful communication as well as increases
the Co-Channel Interference (CCI) perceived by an active PU. To overcome this, this
thesis proposes three CSS strategies, namely the Dual-Threshold CSS (DTCSS), the
Maximum CSS (MCSS), and the Max-Min CSS (MMCSS). These strategies reduce
the number of reporting terminals while maintaining reliable performance and minimal
CCI e ect. The performance of these three methods is analyzed, and the numerical
and simulations results illustrate the accuracy of the derived results as well as the
achieved performance gains. The second part of this thesis studies the impact of CCI
on the performance of a number of transmission techniques used by CRNs. These are
Chase combining Hybrid Automatic Repeat Request (HAQR), Fixed Relaying (FR),
Selective Relaying (SR), Incremental Relaying (IR), and Selective Incremental Relaying
(SIR). The performance of these techniques is studied in terms of the average
spectral e ciency, the outage probability, and the error probability. To obtain closed
forms for the error probabilities, this thesis proposes a novel accurate approximation
of the exponential integral function using a sum of exponentials. / Thesis (Ph.D, Electrical & Computer Engineering) -- Queen's University, 2013-02-05 13:39:22.35
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