Title :
Enhanced continuous-wave interference reduction in low complexity digital direct-sequence spread-spectrum receivers
Author :
Goiser, Alois M J
Author_Institution :
Inst. fur Allgemeine Elektotech., Tech. Univ. Wien, Austria
Abstract :
The performance of low complexity digital direct-sequence spread-spectrum receivers with integrated interference reduction schemes is compared to the analog-receiver and the simple hard-limiter receiver. As an interference situation, we assume additive white Gaussian noise and strong constant envelope continuous wave interference. An interference reduction scheme, consisting of a special 2-bit nonlinearity with matched magnitude window weighting is employed. The received signal´s magnitude distribution and zero-crossings are used to estimate the composition of the interference. By simulation results the proposed adaptive concept is compared to that proposed by Amoroso (1983), which could be described as a robust scheme
Keywords :
Gaussian noise; adaptive signal processing; digital radio; interference suppression; pseudonoise codes; radio receivers; radiofrequency interference; spread spectrum communication; white noise; 2-bit nonlinearity; adaptive concept; additive white Gaussian noise; analog receiver; constant envelope continuous wave interference; continuous-wave interference reduction; direct-sequence spread-spectrum receivers; hard limiter receiver; integrated interference reduction; low complexity digital receivers; matched magnitude window weighting; received signal magnitude distribution; receiver performance; robust scheme; simulation results; zero-crossings; AWGN; Additive white noise; Communication system control; Gaussian noise; Interference; Quantization; Robustness; Satellite communication; Spread spectrum communication; Statistics;
Conference_Titel :
Military Communications Conference, 1996. MILCOM '96, Conference Proceedings, IEEE
Conference_Location :
McLean, VA
Print_ISBN :
0-7803-3682-8
DOI :
10.1109/MILCOM.1996.568634
