DocumentCode :
2472303
Title :
Ultra-wideband spatio-temporal channel sounding with use of an OFDM signal in the presence of narrowband interference
Author :
Sugizaki, Daisuke ; Iwakiri, Naohiko ; Kobayashi, Takehiko
Author_Institution :
Wireless Syst. Lab., Tokyo Denki Univ., Tokyo, Japan
fYear :
2010
fDate :
13-15 Dec. 2010
Firstpage :
1
Lastpage :
10
Abstract :
An Ultra wideband (UWB) spatio-temporal channel sounder, employing an orthogonal frequency division multiplexing (OFDM) signal and a receiving virtual array antenna was prototyped and evaluated in a narrowband interference environment. Channel information of the OFDM signal was estimated from the measured data. Time of arrival (TOA) was calculated by correlating the received waveforms with a template. Angle of arrival (AOA) was derived by employing a multiple signal classification (MUSIC) algorithm and an angular histogram method proposed by the authors. The frequency spectrum and the AOA of the narrowband interference signal can be simultaneously estimated by means of the same methodology. Propagation experiments were carried out to validate the techniques in one- and two-path environments in a radio anechoic chamber. The bandwidths of the UWB OFDM and the narrowband signals were respectively 500 and 20 MHz. The TOA and the AOA of the wideband signal were estimated within reasonable bounds of error in the presence of narrowband interference, and the AOA and the occupied bandwidth of the narrowband signal were also satisfactorily estimated.
Keywords :
OFDM modulation; channel capacity; direction-of-arrival estimation; signal classification; time-of-arrival estimation; ultra wideband communication; OFDM signal; angle of arrival; angular histogram method; channel information; multiple signal classification algorithm; narrowband interference; time of arrival; ultra-wideband spatio-temporal channel sounding; Arrays; Interference; Multiple signal classification; Narrowband; Niobium; OFDM; Wideband; OFDM; Ultra wideband; angle of arrival; channel sounder; cognitive radio; delay profile; radio propagation; time of arrival;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Signal Processing and Communication Systems (ICSPCS), 2010 4th International Conference on
Conference_Location :
Gold Coast, QLD
Print_ISBN :
978-1-4244-7908-5
Electronic_ISBN :
978-1-4244-7906-1
Type :
conf
DOI :
10.1109/ICSPCS.2010.5709743
Filename :
5709743
Link To Document :
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