TY - GEN
T1 - OFDM-based distributed estimation for rich scattering environments
AU - Santucci, Robert
AU - Banavar, Mahesh K.
AU - Zhang, Sai
AU - Spanias, Andreas
AU - Tepedelenlioglu, Cihan
N1 - Publisher Copyright:
© 2014 IEEE.
PY - 2014/10/31
Y1 - 2014/10/31
N2 - A preliminary investigation has been conducted into the use of orthogonal frequency-division multiple-access for distributed estimation. The key difference from previous work in the literature is that the channels between the sensors and the fusion center contain multiple paths with time lags, amplitudes, and phase rotations due to fading. Orthogonal frequency-division multiplexing has been proven to be an effective modulation scheme in the presence of multipath channels, and thus has been utilized in these experiments. This estimation system was designed to operate in a heavily scattered environment where synchronizing the transmitters and developing channel statistics has proven difficult to achieve. Sensors measure a signal in noise, modulate the measured data over an OFDM subcarrier, and transmit this to a fusion center over a Gaussian multiple-access channel. The transmissions are received at the fusion center using an OFDM receiver, and the estimation process is completed. Simulations demonstrate the effectiveness of the technique.
AB - A preliminary investigation has been conducted into the use of orthogonal frequency-division multiple-access for distributed estimation. The key difference from previous work in the literature is that the channels between the sensors and the fusion center contain multiple paths with time lags, amplitudes, and phase rotations due to fading. Orthogonal frequency-division multiplexing has been proven to be an effective modulation scheme in the presence of multipath channels, and thus has been utilized in these experiments. This estimation system was designed to operate in a heavily scattered environment where synchronizing the transmitters and developing channel statistics has proven difficult to achieve. Sensors measure a signal in noise, modulate the measured data over an OFDM subcarrier, and transmit this to a fusion center over a Gaussian multiple-access channel. The transmissions are received at the fusion center using an OFDM receiver, and the estimation process is completed. Simulations demonstrate the effectiveness of the technique.
UR - http://www.scopus.com/inward/record.url?scp=84936797972&partnerID=8YFLogxK
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U2 - 10.1109/SSPD.2014.6943311
DO - 10.1109/SSPD.2014.6943311
M3 - Conference contribution
AN - SCOPUS:84936797972
T3 - 2014 Sensor Signal Processing for Defence, SSPD 2014
BT - 2014 Sensor Signal Processing for Defence, SSPD 2014
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 4th Conference of the Sensor Signal Processing for Defence, SSPD 2014
Y2 - 8 September 2014 through 9 September 2014
ER -