Title :
A broadband measurement system for the indoor multipath fading channel
Author_Institution :
Inst. fuer Allgemeine Elektrotech und Elektron. Tech. Univ. Vienna, Austria
Abstract :
A system is described for broadband measurements of the multipath fading channel which is found in the indoor radio environment or in factories. The system employs the direct-sequence spread-spectrum technique. The transmitted wideband probe signal is an m-sequence with 511 chips phase-shift keying (PSK)-modulated onto a 1.75-GHz carrier. Due to the chip duration of 22.7 ns, the system is able to detect differences in path length ≈7 m. The correlation is performed by a SAW-convolver with 16 μs integration time, delivering measurements of excess delay up to 10 μs in the present configuration
Keywords :
fading; spread spectrum communication; surface acoustic wave devices; telecommunication channels; 1.75 GHz; SAW-convolver; UHF; broadband measurement system; direct-sequence spread-spectrum technique; factories; indoor radio environment; m-sequence; multipath fading channel; phase-shift keying; wideband probe signal; Fading; Indoor radio communication; Performance evaluation; Phase shift keying; Probes; Production facilities; Semiconductor device measurement; Spread spectrum communication; Time measurement; Wideband;
Conference_Titel :
Electrotechnical Conference, 1991. Proceedings., 6th Mediterranean
Conference_Location :
LJubljana
Print_ISBN :
0-87942-655-1
DOI :
10.1109/MELCON.1991.161941
