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Power Control Mechanisms on WARP Boards
Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Technology and Media. (Student Thesis)
2013 (English)Independent thesis Advanced level (degree of Master (Two Years)), 80 credits / 120 HE creditsStudent thesis
Abstract [en]

In recent years, a number of power control concepts have been studied and implementedeither in simulation or in practice for different communication systems. It is still the case that a great deal of research is being conducted within the area of energyefficient power control mechanisms for future wireless communication networksystems. However, only a limited amount of practical work has been implemented onreal test beds environment. The main goal of this thesis is to propose and develop newprototype Transmit Power Control Mechanisms (TPCM) on WARP (Wireless Open-Access Research Platform) boards for point-to-point communications, which are to bedeveloped and tested in an indoor environment. This work mainly focuses on the automaticpower control nodes, transmission and reception over-the-air. In this thesis, wehave designed and developed TPCM to adjust the power levels on a transmitter nodeby following the feedback (ACK) approach. In this case, the destination (receiver)node always sends the feedback (ACK) to transmitter node during every successfultransmission of message signal and the main focus is on a reduction in the packetloss rate (PLR), an increase in the packet reception rate (PRR) and the capacity ofthe nodes. In this real work, we have developed and measured the results based ontwo functions namely, with and without packet window function power control mechanisms.

According to the measurements section, both with and without function powercontrol mechanisms proved to have better performances for different tunable parameters.If both functions are compared, then the with window function power controlmechanism was shown to produce better performances than the without windowpower control mechanism and it also converged faster than the without window function.If consideration was given to controlling a reduction in packet loss rate, thenthe with widnow function offered higher performances than those without the windowfunction. In this regard, it was found that the with window function has acheived amaximum packet reception rate than that for the without window function for differenttunable parameters. In relation to the power consumption scenario, it was determinedthat the without window fuction proved to produce energy saving performances thanthe with window function. There are several interesting aspects of the transmit powercontrol mechanisms highlighted in the results and discussion chapter.

Place, publisher, year, edition, pages
2013. , 61 p.
Research report in electronics
Keyword [en]
Power Control, TPCM, ExNode, FPGA, WARP Board, ACK, RSSI, ExMAC, PRR, SISO, QoS, TDMA, RTP.
National Category
URN: urn:nbn:se:miun:diva-18437OAI: diva2:603637
Subject / course
Electronics EL1
Educational program
Internationellt masterprogram i elektronikkonstruktion TELAA 120 hp
2012-12-19, S113, Holmgatan 10 851 70, Sundsvall, 10:15 (English), Sundsvall, 08:35 (English)
Available from: 2013-02-07 Created: 2013-02-06 Last updated: 2013-02-07Bibliographically approved

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Kandukuri, Somasekhar Reddy
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