Title :
Close-range outdoor wireless channel sounding
Author :
Johnston, Scott E. ; Fiore, Paul D.
Author_Institution :
MIT Lincoln Lab., Lexington, MA, USA
Abstract :
A data collection in the 2.4GHz ISM band was performed in order to characterize the coupling between a colocated transmitter and receiver in a time-varying, frequency-selective, wideband outdoor channel. Once least-squares channel estimates are obtained, channel length, RMS delay spread, coherence time, and coherence bandwidth are calculated. The values help assess the effects of line-of-sight (LOS) versus non-line-of-sight (NLOS) and traffic conditions, and are being used to inform the design of an advanced adaptive communications system.
Keywords :
channel estimation; least squares approximations; radio receivers; radio transmitters; telecommunication traffic; time-varying channels; wireless channels; ISM band; RMS delay spread; advanced adaptive communications system; channel length; close-range outdoor wireless channel sounding; coherence bandwidth; coherence time; colocated receiver; colocated transmitter; data collection; frequency 2.4 GHz; frequency-selective channel; least squares channel estimates; non-line-of-sight condition; time-varying channel; traffic condition; Bandwidth; Channel estimation; Chirp; Coherence; Delay; OFDM; Wireless communication;
Conference_Titel :
Signals, Systems and Computers (ASILOMAR), 2011 Conference Record of the Forty Fifth Asilomar Conference on
Conference_Location :
Pacific Grove, CA
Print_ISBN :
978-1-4673-0321-7
DOI :
10.1109/ACSSC.2011.6190358
