Title :
Experimental test results of an asynchronous DS-CDMA satellite system
Author :
Nogueira, Alexandre H. ; De Carvalho, Pado Henrique P ; Soares, Antonio J M
Author_Institution :
Air Minist., Brazil
fDate :
6/23/1905 12:00:00 AM
Abstract :
In this work a satellite communication system operating in an asynchronous DS-CDMA scheme is presented. The system is submitted to a set of tests in order to verify its behavior concerning the bit error rate and the loss of synchronism as a function of the process gain and the levels of interference. An investigation on the transmission of DS-CDMA signals over a shared frequency band with QPSK narrowband signals is also performed. An analytical method to determine the capacity of shared carriers in the frequency band in a DS-CDMA scheme is presented and experimentally tested.
Keywords :
channel capacity; code division multiple access; error statistics; mobile satellite communication; quadrature phase shift keying; radiofrequency interference; spread spectrum communication; telecommunication equipment testing; QPSK narrowband signals; asynchronous DS-CDMA; bit error rate; code division multiple access; interference levels; process gain; satellite communication system; shared frequency band; signal transmission; synchronism loss; system capacity; tests; Bit error rate; Frequency synchronization; Interference; Modems; Multiaccess communication; Performance gain; Propagation losses; Satellite communication; Signal processing; System testing;
Conference_Titel :
Microwave and Optoelectronics Conference, 2001. IMOC 2001.Proceedings of the 2001 SBMO/IEEE MTT-S International
Print_ISBN :
0-7803-7065-1
DOI :
10.1109/SBMOMO.2001.1008713
