Noncoherent Orthogonal Frequency Division Multiplexing (Ph.D. thesis, 2010 - 2013)

AcR architecture LTCC and multipliers Bit-error-rate for different mixer input powers
(a) Architecture of the noncoherent UWB autocorrelation receiver (AcR). (b) Low-temperature cofired ceramic (LTCC) wih wire-bonded UWB mixers. (c) Simulated bit-error-rate (BER) for various mixer input powers.


The aim of this project was the demonstration, validation, and evaluation of a wireless multicarrier transmission scheme that employs a novel noncoherent receiver. The receiver supports energy detection of a multiband ultra-wideband (UWB) signal. It is a robust, power-efficient receiver architecture that is capable of collecting energy from the multipath components of the channel response and it has a scalable increased data rate. Central element of the demonstrator is an analog frontend that lowers the requirement for digital signal processing and for power hungry analog-to-digital conversion. The proposed receiver may be used in wireless systems that perform data transmissions at extremely large data rates (>= 500 MBit/s) over limited distances (<= 5 m). It could be used to connect mass storage as available in todays mobile handsets to personnel computers, home entertainment systems, or some public/commercial information kiosk, for instance. The discussed receiver has a radically different system architecture. Therefore, it may be capable of providing these ultra-high data rates at a significantly reduced energy per transmitted bit, compared with conventional systems. Key aim of this project was demonstrating the feasibility of such a receiver and evaluating the possible power saving.
Funding: Austrian research promotion agency (FFG; grant number: 825899).
Project Partners: Graz University of Technology (coordinator), EPCOS OHG, XERXES Electronics GmbH, xFace e.U.

Related Publications

  • A. Pedross-Engel, H. Schumacher, and K. Witrisal, "Modeling and Identification of Ultra-Wideband Analog Multipliers," IEEE Transactions on Circuits and Systems I: Regular Papers, vol. 65, no. 1, pp. 283 - 292, Jan. 2018.
  • A. Pedroß-Engel, "Generalized Noncoherent Ultra-Wideband Receivers," Ph.D. thesis, Graz University of Technology, Graz, Austria, June 2014. Thesis can be found here.
  • A. Melzer, A. Pedross, and M. Mücke, "Holistic Biquadratic IIR Filter Design for Communication Systems using Differential Evolution," Journal of Electrical and Computer Engineering; Special Issue on Hardware Implementation of Digital Signal Processing Algorithms, vol. 2013, March 2013.
  • A. Pedross and K. Witrisal, "Analysis of Nonideal Multipliers for Multichannel Autocorrelation UWB Receivers," in 2012 IEEE International Conference on Ultra-Wideband (ICUWB 2012), Syracuse, NY, USA, pp. 140 - 144, Sept. 2012.
  • A. Pedross and K. Witrisal, "Sliding Window Integrator Approximations for Multichannel Autocorrelation UWB Receivers, in 2012 IEEE International Symposium on Circuits and Systems (ISCAS 2012), Seoul, Republic of Korea, pp. 2537 - 2540, May 2012.