• Publications
  • Influence
RFID Reader Receivers for Physical Layer Collision Recovery
tl;dr
An analysis of the achievable throughput increase of a system that can recover from collisions at a physical layer and successfully read the data. Expand
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Vienna MIMO Testbed
tl;dr
This paper presents a flexible testbed developed to examine MIMO algorithms and channel models described in literature by transmitting data at through real, physical channels, supporting simultaneously four transmit and four receive antennas. Expand
  • 96
  • 4
  • Open Access
A smart collision recovery receiver for RFIDs
tl;dr
In this work, we focus on framed slotted Aloha (FSA) and passive ultra high-frequency radio frequency identification multi-antenna systems with physical layer collision recovery. Expand
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Channel estimation in tag collision scenarios
Multiple tags in Radio Frequency Identification (RFID) systems are scheduled by a medium access control layer using the Framed Slotted Aloha (FSA) or binary tree protocol. The focus of our researchExpand
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Direction of Arrival Estimation by Phased Arrays in RFID
In this paper we propose a direction of arrival esti- mation for a dual receive antenna RFID reader. In a strong line of sight environment, the phase shift on the elements of a receive ar- ray of theExpand
  • 32
  • 1
  • Open Access
Broadband suppression properties of active leaking carrier cancellers
In passive UHF RFID systems backscattering is used for tag to reader communication. This technique relies on a continuous wave signal being transmitted by the reader during the tag's data transfer.Expand
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  • 1
  • Open Access
A Modular UHF Reader Frontend for a Flexible RFID Testbed
tl;dr
We present the implementation of a modular UHF reader frontend for a flexible RFID testbed. Expand
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  • Open Access
Active carrier compensation for a multi-antenna RFID reader frontend
In this paper we present our multi-antenna radio frequency identification (RFID) research and development environment. We show measurement results for an ultra high frequency multi-antenna (oneExpand
  • 13
  • 1
  • Open Access
Automatic leaking carrier canceller adjustment techniques
tl;dr
In this contribution, four automatic adjustment algorithms for leakage carrier cancellation in radio frequency identification (RFID) readers are compared: full search, gradient search, fast and direct. Expand
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Fast Algorithm for Leaking Carrier Canceller Adjustment
RFID readers for passive tags generally suffer from self-interference. The transmitter of the RFID reader is also in operation during receive periods to power the tag and enable backscatterExpand
  • 5
  • 1
  • Open Access