Title :
Human-body shadowing effects on indoor MIMO-OFDM channels at 5.2 GHz
Author :
Tan, H. ; DasGupta, J. ; Ziri-Castro, K.
Author_Institution :
Sch. of Eng. Syst., Queensland Univ. of Technol., Brisbane, QLD, Australia
Abstract :
Pedestrian movement is known to cause significant effects on indoor MIMO channels. In this paper, a statistical characterization of the indoor MIMO-OFDM channel subject to pedestrian movement is reported. The experiment used 4 sending and 4 receiving antennas and 114 sub-carriers at 5.2 GHz. Measurement scenarios varied from zero to ten pedestrians walking randomly between transmitter (Tx) and receiver (Rx) arrays. The empirical cumulative distribution function (CDF) of the received fading envelope fits the Ricean distribution with K factors ranging from 7 dB to 15 dB, for the 10 pedestrians and vacant scenarios respectively. In general, as the number of pedestrians increase, the CDF slope tends to decrease proportionally. Furthermore, as the number of pedestrians increase, increasing multipath contribution, the dynamic range of channel capacity increases proportionally. These results are consistent with measurement results obtained in controlled scenarios for a fixed narrowband Single-Input Single-Output (SISO) link at 5.2 GHz in previous work. The described empirical characterization provides an insight into the prediction of human-body shadowing effects for indoor MIMO-OFDM channels at 5.2 GHz.
Keywords :
Antenna measurements; Channel capacity; Distribution functions; Dynamic range; Fading; Legged locomotion; MIMO; Receiving antennas; Shadow mapping; Transmitters;
Conference_Titel :
Antennas and Propagation (EuCAP), 2010 Proceedings of the Fourth European Conference on
Conference_Location :
Barcelona, Spain
Print_ISBN :
978-1-4244-6431-9
Electronic_ISBN :
978-84-7653-472-4