Tanish Agrawal - Academia.edu (original) (raw)
Supervisors: Panagiotis Tsakalides and Manolis G.H. Katevenis
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Dhirubhai Ambani Institute of Information and Communication Technology (DA-IICT)
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Papers by Tanish Agrawal
CENSE 2.1 aims to upgrade the existing platform to facilitate easier and faster testing of Sensor... more CENSE 2.1 aims to upgrade the existing platform to facilitate easier and faster testing of Sensor Network applications, in order to reduce the time and cost involved in developing them. ZigbitTM OEM module is chosen as it contains Atmel’s ATmega1281 microcontroller and AT86RF230 RF Transceiver fabricated into one chip, drastically reducing the size and the cost. Also, a major design decision was to incorporate all digital sensors replacing analog sensors used in previous versions to improve accuracy and reliability. It also helps in making highly application specific designs with optimized power consumption, automatic synchronization and small physical size.
Radio and Wireless …
This paper considers compressed sensing (CS) techniques for signal reconstruction and channel est... more This paper considers compressed sensing (CS) techniques for signal reconstruction and channel estimation in OFDM-based high-rate ultra wideband (UWB) communication systems. We employ a parallel CS structure that exploits frequency domain sparsity. We also consider multipath UWB channels in both the line-of-sight and non line-of-sight environments. UWB signal detection and channel estimation from sub-Nyquist analog projections is carried out using an optimized orthogonal matching pursuit algorithm and the smoothed ℓ0 algorithm. Simulation results demonstrate significant gains in the form of reliable signal recovery and channel estimation as well as dramatically sub-Nyquist sampling rates for the analog-to-digital converters while maintaining high data rates.
CENSE 2.1 aims to upgrade the existing platform to facilitate easier and faster testing of Sensor... more CENSE 2.1 aims to upgrade the existing platform to facilitate easier and faster testing of Sensor Network applications, in order to reduce the time and cost involved in developing them. ZigbitTM OEM module is chosen as it contains Atmel’s ATmega1281 microcontroller and AT86RF230 RF Transceiver fabricated into one chip, drastically reducing the size and the cost. Also, a major design decision was to incorporate all digital sensors replacing analog sensors used in previous versions to improve accuracy and reliability. It also helps in making highly application specific designs with optimized power consumption, automatic synchronization and small physical size.
Radio and Wireless …
This paper considers compressed sensing (CS) techniques for signal reconstruction and channel est... more This paper considers compressed sensing (CS) techniques for signal reconstruction and channel estimation in OFDM-based high-rate ultra wideband (UWB) communication systems. We employ a parallel CS structure that exploits frequency domain sparsity. We also consider multipath UWB channels in both the line-of-sight and non line-of-sight environments. UWB signal detection and channel estimation from sub-Nyquist analog projections is carried out using an optimized orthogonal matching pursuit algorithm and the smoothed ℓ0 algorithm. Simulation results demonstrate significant gains in the form of reliable signal recovery and channel estimation as well as dramatically sub-Nyquist sampling rates for the analog-to-digital converters while maintaining high data rates.