SDR Platform for Wireless Cooperative Protocols

Nielsen, Jakob Sloth ; Freund-Hansen, Bjarke

4. term

Elektronics and IT, Master (Elite Wireless Communication)

2010

2010-06-03

88

Dette projekt udvikler en platform til hurtig prototyping og evaluering af trådløse, kooperative protokoller under virkelige forhold. Med kooperative protokoller menes regler, der lader enheder samarbejde om at sende data. Platformen er bygget på heterogent hardware: mobile, indlejrede enheder samt GNU Radio softwaredefineret radio (SDR) med USRP2. Den kører i 2,4 GHz ISM-båndet, og der er lavet en standardimplementering baseret på Bluetooth-radio og baseband-lag (den lavniveaude del, der håndterer signalbehandlingen). Platformen modellerer et tovejsrelæ-scenarie, hvor en enkelt relæ-node faciliterer kommunikation mellem to endenoder. For at vise en mulig anvendelse gennemføres et forsøg, der sammenligner opnåelig gennemstrømning (data pr. tidsenhed) ved relaying uden netværkskodning og med XOR-netværkskodning (en metode, der kombinerer datapakker med en eksklusiv-OR-operation). Resultaterne viser, at platformen er velegnet til at sammenligne og evaluere en implementering af Bluetooth-relaying, både med og uden XOR-netværkskodning.

This project develops a platform for rapid prototyping and evaluation of wireless cooperative protocols under real-world conditions. Cooperative protocols are rules that let devices collaborate to send data. The platform uses heterogeneous hardware: mobile embedded devices together with the GNU Radio software-defined radio (SDR) toolkit and USRP2. It operates in the 2.4 GHz ISM band, and includes a default implementation based on the Bluetooth radio and baseband layer (the low-level part that handles signal processing). The platform is modeled as a two-way relay scenario, where a single relay node enables communication between two endpoint nodes. To demonstrate a possible application, we run an experiment comparing achievable throughput (data per unit time) for relaying without network coding and with XOR network coding (a method that combines data packets using an exclusive-OR operation). The results show the platform is suitable for comparing and evaluating an implementation of Bluetooth relaying, with and without XOR network coding.

[This abstract was generated with the help of AI]

SDR ; USRP2 ; GNU Radio ; Packet-based radio ; Wireless Cooperative Protocols ; Bluetooth ; Network Coding ; XOR ; Evaluation Platform ; Wireless ; MSP430 ; Software Defined Radio

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