Multi-Antenna Receiver for Ambient Backscatter Communication Systems
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A4 Artikkeli konferenssijulkaisussa
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Date
2018-08-24
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en
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2018 IEEE 19th International Workshop on Signal Processing Advances in Wireless Communications, SPAWC 2018, Volume 2018-June, IEEE International Workshop on Signal Processing Advances in Wireless Communications
Abstract
Consider an ambient modulated backscatter communication (AmBCC) system adopting binary phase shift keying modulation that the receiver is to decode the backscatter device induced message without knowledge of the channel state information, the statistical channel covariance matrices, and the noise variance at the receiver antennas. In this paper, we apply the fact that the ambient orthogonal frequency-division multiplexing (OFDM) signals with a large number of subcarriers contain repetitive elements inducing time correlation. We propose a simple sample covariance matrix distance based rule that does not need to invert the estimated covariance matrices. The results show that the developed method enables the receiver to detect the backscatter symbol over one ambient OFDM symbol period applying the time correlation induced by the wideband ambient OFDM transmission which contains repetitive elements.Description
Keywords
Ambient backscatter, binary phase-shift keying, OFDM, sample covariance matrix, time-varying channel
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Citation
Duan, R, Jantti, R, Elmossallamy, M, Han, Z & Pan, M 2018, Multi-Antenna Receiver for Ambient Backscatter Communication Systems . in 2018 IEEE 19th International Workshop on Signal Processing Advances in Wireless Communications, SPAWC 2018 . vol. 2018-June, 8446004, IEEE International Workshop on Signal Processing Advances in Wireless Communications, IEEE, United States, IEEE International Workshop on Signal Processing Advances in Wireless Communications, Kalamata, Greece, 25/06/2018 . https://doi.org/10.1109/SPAWC.2018.8446004