Browsing by Author "Brian Hughes, Member"
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- A Modal Approach to Compact MIMO Antenna Design.(2017-06-29) Yang, Binbin; Jacob Adams, Chair; Brian Hughes, Member; Brian Floyd, Member; Michael Steer, Member; Ruian Ke, Member
- Analytical Study on Heterogeneous Systems.(2012-04-23) Li, Chengzhi; Huaiyu Dai, Chair; Brian Hughes, Member; J Townsend, Member; Peng Ning, Member
- Capacity and Coverage Analysis for Multihop Relay-Enhanced WiMAX Networks.(2011-10-21) Kim, Yong Chul; Mihail Sichitiu, Chair; Mihail Devetsikiotis, Member; Brian Hughes, Member; Harilaos Perros, Member
- Complex and Dynamic Network Analysis: A Topological Perspective(2015-05-13) Gamble, Jennifer Pamela; Hamid Krim, Chair; Brian Hughes, Member; Huaiyu Dai, Member; Patricia Hersh, Member
- Distributed and Channel-Adaptive Spectrum Detection, Sensing, and Access for Rational Cognitive Radio Users.(2016-06-02) Lu, Yuan; Alexandra Duel-Hallen, Chair; Wenye Wang, Member; Brian Hughes, Member; Hans Hallen, Member
- Effects of Near-Field Loading on Compact MIMO Antennas.(2019-01-04) Zhou, Juncheng; Jacob Adams, Chair; Brian Floyd, Member; Brian Hughes, Member
- Environmental Signatures Extraction and Analytics for Multimedia Forensics.(2022-10-07) Choi, Jisoo; Chau-Wai Wong, Chair; Brian Hughes, Member; Nuria Gonzalez Prelcic, Member; Bradley Reaves, Graduate School Representative
- Experimental Measurements of Temporal Dispersion for Underwater Laser Communications and Imaging.(2012-12-13) Cochenour, Brandon; John Muth, Chair; Leda Lunardi, Member; Linda Mullen, External; C Philbrick, Member; Brian Hughes, Member
- Fast and Robust Compressive Signal Reconstruction Via Approximate Message Passing and Denoising(2015-09-05) Tan, Jin; Dror Baron, Chair; Brian Hughes, Member; J Townsend, Member; Hamid Krim, Member; Liyi Dai, External; Min Kang, Member
- Feedback Overhead Reduction and Interference Mitigation for Next Generation Wireless Systems.(2023-11-13) Deshmukh, Mrugen Anil; Ismail Guvenc, Chair; Huaiyu Dai, Member; Brian Hughes, Member; Muhammad Shahzad, Member
- Gossip-based Information Spreading in Mobile and Social Networks.(2014-03-24) Huang, Yufan; Huaiyu Dai, Chair; Dror Baron, Member; Brian Hughes, Member
- Harmonic Performance of Re-configurable N-path Mixer-first Receiver Architecture with Circulant-Symmetric Baseband Feedback(2019-05-10) Prabha Ramakrishnan, Aparna; Brian Floyd, Chair; Jacob Adams, Member; Brian Hughes, Member
- Information Fusion: Scaling Subspace-Driven Approaches.(2021-03-23) Ghanem, Sally Samir; Hamid Krim, Chair; Huaiyu Dai, Member; Brian Hughes, Member; Ryan A. Kerekes, Technical Consultant; Kazufumi Ito, Member
- Information Spreading in Dynamic Networks.(2018-07-20) Keshava Nayak, Anuj; Huaiyu Dai, Chair; Brian Hughes, Member; Hamid Krim, Member
- Multi-antenna and mmWave Communications for Unmanned Aerial Vehicle Networks.(2019-04-23) Rupasinghe, R.A. Nadisanka Perera; Ismail Guvenc, Chair; Muhammad Shahzad, Member; Mihail Sichitiu, Member; Huaiyu Dai, Member; Brian Hughes, Member
- Multi-Modal Sensor Fusion: A Principled Approach to Optimality.(2020-04-10) Roheda, Siddharth; Tianfu Wu, Co-Chair; Hamid Krim, Co-Chair; Patrick Combettes, Minor; Brian Hughes, Member
- Novel Adaptive Power and Rate Control in Third GenerationWideband CDMA Mobile Systems(2000-05-15) Sadri, Ali Soheil; Winser Alexander, Chair; Brian Hughes, Member; Ernest Stitzinger, Member; Andy Rindos, MemberThis Dissertation proposes novel adaptive power control and rate change schemesand investigates the performance of a Wideband Code Division Multiple Access (W-CDMA)system in conjunction with these adaptive techniques. In these schemes, thetransmit power and rate are adapted to the variations of the fading channel using adaptivethresholds based on the probability distribution function (pdf) of the predicted mobilechannel power values.We define a policy similar to the traditional power control technique withthresholds except that the thresholds are set based on several regions of operation in ourAdaptive Transmitter Power Control (TPC) and Adaptive Seamless Rate Change (SRC)schemes. These regions are defined by means of the probability distribution function(pdf) of the total average channel power. The pdf is initially constructed based on thehistory of the predicted channel power values derived from the long-range predictionalgorithm. These regions can be defined such that the system operates at a constant ratioof energy per bit over noise power.In a 1-user model with one channel path, the pdf of the channel power would bean exponential or chi-square function with 2 degrees of freedom. However, in a W-CDMAsystem, normally the rake receiver has several fingers. That is, at the receiver,the system either estimates or predicts the channel coefficients at each rake finger andperforms maximal ratio combining by multiplying each finger with its conjugate or chooses the ones with the highest energy and performs maximal ratio combining on theselected fingers.In a two-user system where the multi-access interference is modeled as theStandard Gaussian Approximation (SGA), the system performance and error probabilityof our W-CDMA system becomes similar to the one for our one-user system.Consequently, in a single user detector system, when all users adopt a similar policy fortheir adaptive power and rate control, the average total Multi-Access Interference (MAI)will be reduced. The resulting channel capacity of the system in this case will beincreased and the system may operate in a lower transmit power level.We evaluate the performance of these schemes using a detailed block diagramsimulation of a W-CDMA system. We model and simulate all major components of thesystem including an accurate model for realistic mobile channels. We present simulationresults to verify that the proposed novel schemes are superior to the traditionalapproaches for transmitter power control and rate change. Furthermore, our simulationresults show that our proposed techniques reduce the effect of Multi Access Interferencein a multi-user system.
- Optimal Resource Allocation in Heterogeneous Networks.(2014-08-11) Pandian, Mani Bharathi; Huaiyu Dai, Co-Chair; Mihail Sichitiu, Co-Chair; Wenye Wang, Member; Brian Hughes, Member; David Thuente, Graduate School Representative
- Privacy-preserving Information Exchange in Collaborative Security, Crowdsensing, and Machine Learning.(2020-11-17) Jin, Richeng; Huaiyu Dai, Chair; Dror Baron, Member; Brian Hughes, Member; Wenye Wang, Member; Min Kang, Graduate School Representative
- Reconfigurable Passive Mixer-First Receivers.(2018-12-18) Wilson, Charley Theodore; Brian Floyd, Chair; Jacob Adams, Member; Brian Hughes, Member; Muhammad Shahzad, Member
