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Identifier |
000397127 |
Title |
Software defined radio implementation of IEEE 802.11a physical and MAC layer transceiver on general purpose processors |
Alternative Title |
Υλοποίηση ενός πομποδέκτη διαμορφούμενου από λογισμικό συμβατού με το φυσικό και MAC επίπεδο του πρωτοκόλλου IEEE 802.11a σε γενικού σκοπού επεξεργαστές |
Author
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Σουρλίγκας, Εμμανουήλ Κ.
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Thesis advisor
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Τραγανίτης, Απόστολος
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Reviewer
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Μπίλας, Άγγελος
Μουχτάρης, Αθανάσιος
Παπαδάκης, Στέφανος
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Abstract |
Over the last years the number of wirelessly connected devices has exponentially
increased, along with the user need in bandwidth. Consequently, new
technologies are under development to fulfill the user demands. However, the
development and adaption of these new technologies has become a business
critical issue.
Software Defined Radios (SDRs) provide great flexibility, reconfigurability
and cost efficiency, aspects that can contribute to an increased rate of new
technologies adaption. However, SDR implementations also introduce challenges,
often related with the high computational resources that are required.
Realtime performance of high bandwidth systems like IEEE 802.11a can be a
challenging task for a software implementation. Towards this goal, this work
exploits all the available optimization techniques and technologies including
multi-threading and Single Instruction, Multiple Data (SIMD) instructions.
In this work we present a fully software implementation of an IEEE
802.11a standard compliant transceiver based on the GNU Radio SDR platform.
Going beyond existing previous works, which fell short to provide a
unified and fully operational system, our approach provides a realtime IEEE
802.11a Media Access Control (MAC) and physical layer system that can
be handled as a normal wireless network interface by the host Operating
System.
The performance of the system is evaluated both in terms of 802.11a
capabilities, as well as in computational resources requirements. The results
manifest a quite robust physical layer implementation, which is on par with
the best commercial hardware. The MAC layer capacity is only limited by
the SDR hardware latencies and the computing demands can be met by
many modern CPUs. Moreover many of the optimization techniques and
technological or theoretical limitations explored and addressed in this work
are quite generic, and may set a road-map for future SDR implementations
and new technologies development.
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Language |
English |
Subject |
GNU radio |
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OFDM |
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SDR |
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Synchroniazation |
Issue date |
2014-11-21 |
Collection
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School/Department--School of Sciences and Engineering--Department of Computer Science--Post-graduate theses
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Type of Work--Post-graduate theses
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Permanent Link |
https://elocus.lib.uoc.gr//dlib/4/4/f/metadata-dlib-1447689256-488130-17556.tkl
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Views |
435 |