Panos N. Alevizos

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—With rapid advances of scatter radio systems, the principle of reflection rather than active transmission employed by backscatter sensor networks has emerged as a potential key enabler for low-cost, large-scale and dense ubiquitous sensor networks. Despite the presence of three different unknown channel links due to the bistatic setup (i.e., carrier(More)
This work offers concrete, low-complexity (small codeword length) channel coding for the bistatic scatter radio channel, complementing the uncoded setup of recent work. The theoretical design is experimentally validated with a commodity software-defined radio (SDR) reader; tag-to-reader ranges up to 134 meters are demonstrated with 13 dBm emitter power,(More)
—Orthogonal modulation, for example, frequency-shift keying (FSK) or pulse-position modulation (PPM), is primarily used in relatively-low-rate communication systems that operate in the power-limited regime. Optimal noncoherent detection of orthogonally modulated signals takes the form of sequence detection and has exponential (in the sequence length)(More)
Frequency-shift keying (FSK) is an orthogonal modulation technique that is primarily used in relatively low-rate communication systems that operate in the power-limited regime. Optimal noncoherent detection of FSK takes the form of sequence detection and has exponential complexity in the sequence length when implemented through an exhaustive search among(More)
Distributed cooperative network location estimation in motionless and mobile narrowband wireless sensor networks (WSNs) is studied, where agents (to be localized) are several hops away from the anchors (with a priori known location). This work proposes a reduced-communication cooperative and distributed particle filtering (CoopPF) approach based on(More)