caa a22 4500 606190171 CHVBK 20210128100854.0 cr unu---uuuuu 210128e20151201xx s 000 0 eng 10.1007/s10776-015-0281-0 doi (NATIONALLICENCE)springer-10.1007/s10776-015-0281-0 Xu Renhui College of Communications Engineering, PLAUST, Nanjing, China aut Density Function of the Received Signal in OFDM-based Distributed Detection Fusion System [Elektronische Daten] [Renhui Xu] Probability density function (pdf) of the received signal is necessary for the distributed detection fusion when the unreliable channels between the local sensors and the fusion center are considered. Hitherto study has never been made on the statistical distribution of the demodulated OFDM signal over multipath fading channel. Modeling the OFDM system over the multi-path channel, we derived the pdf of the channel frequency domain impulse response by introducing the characteristic function. And the pdf of the demodulated OFDM signal on the receiver side is deduced based on the theory of spherically symmetric random vectors. In addition, an example of OFDM-based distributed detection fusion is presented to illustrate the application of the derived pdf. Simulations show that the fusion with signal statistic information generally does better than fusion without any signal statistic information, and achieves the same performance as the fusion with perfect channel state information if the channel signal-to-noise ratio is above 7dB. Springer Science+Business Media New York, 2015 International Journal of Wireless Information Networks Springer US; http://www.springer-ny.com 22/4(2015-12-01), 357-368 1068-9605 22:4<357 2015 22 10776 https://doi.org/10.1007/s10776-015-0281-0 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s10776-015-0281-0 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Xu Renhui College of Communications Engineering, PLAUST, Nanjing, China aut NATIONALLICENCE 773 0- International Journal of Wireless Information Networks Springer US; http://www.springer-ny.com 22/4(2015-12-01), 357-368 1068-9605 22:4<357 2015 22 10776