Title :
Dispersive chirp combining spread-spectrum system
Author :
Suhartanto, C. Hendra ; McGillem, Clare D.
Author_Institution :
Sch. of Electr. Eng., Purdue Univ., West Lafayette, IN, USA
Abstract :
Chirp (linear FM) filters are dispersive in nature; that is, the time delay of the filter varies with frequency. This dispersive nature can be exploited to perform dispersive combining of the resolved multipath components. Frequency shiftings are performed on the received multipath signals to compensate for the path delays. The proper values for the frequency shifts are obtained via a multipath tracking loop. The performance of the dispersive Chirp combining system in Yegani-McGillem channel models is evaluated via computer simulation
Keywords :
fading; matched filters; radiowave propagation; spread spectrum communication; Chirp linear FM filters; Yegani-McGillem channel models; computer simulation; dispersive Chirp combining system; frequency shifts; multipath signals; multipath tracking loop; path delays; radiowave propagation; spread-spectrum system; time delay; Chirp; Delay effects; Dispersion; Diversity reception; Fading; Frequency; Matched filters; Nonlinear filters; Spread spectrum communication; Transmitters;
Conference_Titel :
Singapore ICCS/ISITA '92. 'Communications on the Move'
Print_ISBN :
0-7803-0803-4
DOI :
10.1109/ICCS.1992.255000
