Title :
On the effects of rotating blades on DS/SS communication systems
Author :
Zhang, Yaman ; Amin, Moeness G. ; Mancuso, Vincent
Author_Institution :
Dept. of Electr. & Comput. Eng., Villanova Univ., PA, USA
Abstract :
Direct-sequence spread-spectrum (DS/SS) techniques are widely used in military and commercial communication systems as well as in the global positioning system (GPS). We consider the Doppler effect of rotating blades in a helicopter on the DS/SS communications. We analyze the performance of DS/SS communications under such a multipath environment, by taking into consideration both Doppler fading and time delays. The model describing the effects of rotating blades on the desired signal is established, and the system performance is analyzed. It is shown that, for this specific application, the communication channel is not Rayleigh and does not resemble any of the commonly assumed fading models in wireless communications
Keywords :
Doppler effect; Global Positioning System; delays; fading channels; military communication; mobile satellite communication; multipath channels; spread spectrum communication; DS/SS communication systems; Doppler effect; Doppler fading; GPS; communication channel; direct-sequence spread-spectrum techniques; global positioning system; helicopter; military communication; multipath environment; performance; rotating blades; time delays; wireless communications; Blades; Delay effects; Doppler effect; Global Positioning System; Helicopters; Military aircraft; Military communication; Performance analysis; Rayleigh channels; Spread spectrum communication;
Conference_Titel :
Statistical Signal and Array Processing, 2000. Proceedings of the Tenth IEEE Workshop on
Conference_Location :
Pocono Manor, PA
Print_ISBN :
0-7803-5988-7
DOI :
10.1109/SSAP.2000.870213
