Senior Design Project
Title: An Experimental platform for a Cooperative Communication Network (Adcom Research Lab)
Advisor: Dr. Momin Uppal (PhD, Texas A&M University)
Cooperative communications has over the past few years received tremendous research interest. This interest is not unwarranted as it promises, at least in theory, significant gains in terms of increase in throughput, interference minimization, greater power efficiency, and coverage expansion in wireless networks.
I am currently working on developing new cooperative schemes for a three node relay system, under various network topologies. This project is part of Advaned Communications Research Laboratory, LUMS, under Dr. Momin Uppal (PhD, Texas A&M University). In our project, so far we have implemented Amplify Forward and Decode Forward schemes. We are using USRP1 devices with MATLAB and gnu-radio platforms to make a three-node relay network, which benefits from cooperative diversity. We have used the coded system (non-systematic convolution codes, rate 1/2), and have obtained results in the low BER regions too. Especially, we have found coding very effective in scenarios where source-relay channel has high SNR and we are using selective Decode Forward. We have worked with BPSK and QPSK systems instead of DBPSK, resulting in increased complexity at the receiver in terms of synchronization, however BER is much improved as compared to the differential system. Work on a new Compress Forward scheme is currently under way. We plan to use feedback-systematic codes at the relay in second time slot, sending only the parity bits, instead of puncturing non-systematic codes. We plan to explore distributed synchronization at later stages of our project, since using coded systems in orthogonal time slots decreases the throughput manifold. We plan to submit our results at Globecom 2013.
Advisor: Dr. Momin Uppal (PhD, Texas A&M University)
Cooperative communications has over the past few years received tremendous research interest. This interest is not unwarranted as it promises, at least in theory, significant gains in terms of increase in throughput, interference minimization, greater power efficiency, and coverage expansion in wireless networks.
I am currently working on developing new cooperative schemes for a three node relay system, under various network topologies. This project is part of Advaned Communications Research Laboratory, LUMS, under Dr. Momin Uppal (PhD, Texas A&M University). In our project, so far we have implemented Amplify Forward and Decode Forward schemes. We are using USRP1 devices with MATLAB and gnu-radio platforms to make a three-node relay network, which benefits from cooperative diversity. We have used the coded system (non-systematic convolution codes, rate 1/2), and have obtained results in the low BER regions too. Especially, we have found coding very effective in scenarios where source-relay channel has high SNR and we are using selective Decode Forward. We have worked with BPSK and QPSK systems instead of DBPSK, resulting in increased complexity at the receiver in terms of synchronization, however BER is much improved as compared to the differential system. Work on a new Compress Forward scheme is currently under way. We plan to use feedback-systematic codes at the relay in second time slot, sending only the parity bits, instead of puncturing non-systematic codes. We plan to explore distributed synchronization at later stages of our project, since using coded systems in orthogonal time slots decreases the throughput manifold. We plan to submit our results at Globecom 2013.
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A System Level Implementation of a Three Node Relay System: Report semester 1 |
a_system_level_implementation_of_a_three_node_relay_system.pptx |
Study Project: Renewable Energy Systems
Title: A Study of Energy Procurement Strategies for Intermittent sources
Advisor: Dr. Hassan Abbas Khan (PhD, University of Manchester)
In this study project, we have done an extensive literature review of energy markets and studied various models proposed by different papers regarding the problem of energy procurement strategies for the integration of renewable, intermittent sources in the supply side of energy markets. Based on our literature survey, we then suggest a few strategies which should be considered while making procurement contracts by the utility companies to ensure maximum reliance on renewable sources while meeting the required energy demands at the same time.
Advisor: Dr. Hassan Abbas Khan (PhD, University of Manchester)
In this study project, we have done an extensive literature review of energy markets and studied various models proposed by different papers regarding the problem of energy procurement strategies for the integration of renewable, intermittent sources in the supply side of energy markets. Based on our literature survey, we then suggest a few strategies which should be considered while making procurement contracts by the utility companies to ensure maximum reliance on renewable sources while meeting the required energy demands at the same time.
A Study of Energy Procurement Strategies for Intermittent Sources: Report |
Course Project: Power Electronics
Title: Design and Simulation of Forward Converter
Advisor: Nauman Zaffar (MS, University of Pennsylvania)
A forward converter is a power electronics circuit which is used to step up or step down DC voltage at the output by controlling the duty cycle of semiconductor switches. Switches are realized using a transistor and a diode, and given proper control circuitry is applied at the gate of the transistor, any voltage can be obtained at the output (ideally). A forward converter also provides the advantage of ground isolation, which means that input and output are electrically isolated, and energy is transferred using the magnetic field of the transformer coils. We intend to implement a forward converter and also devise a suitable control circuit for controlling the switching action of the transistor.
Advisor: Nauman Zaffar (MS, University of Pennsylvania)
A forward converter is a power electronics circuit which is used to step up or step down DC voltage at the output by controlling the duty cycle of semiconductor switches. Switches are realized using a transistor and a diode, and given proper control circuitry is applied at the gate of the transistor, any voltage can be obtained at the output (ideally). A forward converter also provides the advantage of ground isolation, which means that input and output are electrically isolated, and energy is transferred using the magnetic field of the transformer coils. We intend to implement a forward converter and also devise a suitable control circuit for controlling the switching action of the transistor.
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Design and Simulation of a Forward Converter: Project Report |
Course Project: Computer Organization and Assembly Language
Title: Design and Hardware Implementation of 8-bit MIPS Single Cycle Processor
MIPS 8-bit Single Cycle Processor required hardware implementation of R-Type, I-Type, Jump, Branch Not Equal, Branch Equal, Store Word, Load Word instructions. Apart from minimum requirements, the project demonstrated a total of 12 R-Type functions, 12 I-Type functions, including additional hardware for Set on Less Than functionality in both, R and I-Type. It used 18 BIT Instruction Set Architecture to incorporate an 8 BIT immediate field for various advantages.
MIPS 8-bit Single Cycle Processor required hardware implementation of R-Type, I-Type, Jump, Branch Not Equal, Branch Equal, Store Word, Load Word instructions. Apart from minimum requirements, the project demonstrated a total of 12 R-Type functions, 12 I-Type functions, including additional hardware for Set on Less Than functionality in both, R and I-Type. It used 18 BIT Instruction Set Architecture to incorporate an 8 BIT immediate field for various advantages.
Design and Hardware Implementation of 8-bit MIPS Single Cycle Processor: Project Report |
Course Project: Devices and Electronics
Title: Appliance Control by Demodulating and Decoding IR Remote Signals
Advisor: Nauman Zaffar (MS, University of Pennsylvania)
In this project we have designed a circuit which can be used to demodulate and decode IR signals in the range of 36-40 KHz coming from remote controls of various home appliances. This demodulated signal is then used to operate different appliances. We have implemented this project with a novel technique by using ICs and discrete components instead of microcontrollers, keeping in consideration cost and energy optimization.
Advisor: Nauman Zaffar (MS, University of Pennsylvania)
In this project we have designed a circuit which can be used to demodulate and decode IR signals in the range of 36-40 KHz coming from remote controls of various home appliances. This demodulated signal is then used to operate different appliances. We have implemented this project with a novel technique by using ICs and discrete components instead of microcontrollers, keeping in consideration cost and energy optimization.
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Appliance Control by Demodulating and Decoding IR Remote Signals: Project Report |