Title :
Structural correlation between signal and CW interference in the spread spectrum systems
Author :
Cherniakov, Mikhail ; Lo, Jonathan
Author_Institution :
Dept. of Comput. Sci. & Electr. Eng., Queensland Univ., St. Lucia, Qld., Australia
Abstract :
Even though spread spectrum (SS) systems have high immunity to narrowband interference, it can be shown that structural correlation exists between the SS signal and continuous wave (CW) interference. This correlation is proven to have the effect of degrading the receiving signal quality. The aim of this paper is to evaluate the signal-to-noise ratio (SNR) of an SS system in the present of CW interference using statistical analysis. The results show that the degradation caused by this structural correlation depends on the CW frequency. However, regardless to the type and length of the SS sequence, a maximum reduction of about 3-5 dB on the SNR is observed
Keywords :
correlation methods; radiofrequency interference; signal representation; spread spectrum communication; statistical analysis; CW interference; SNR reduction; SS sequence length; SS signal; continuous wave interference; narrowband interference immunity; receiving signal quality; signal; signal-to-noise ratio; spread spectrum systems; statistical analysis; statistical signal representation; structural correlation; Bandwidth; Binary phase shift keying; Degradation; Frequency; Immune system; Interference; Matched filters; Narrowband; Radio transmitters; Spread spectrum communication;
Conference_Titel :
Global Telecommunications Conference, 1998. GLOBECOM 1998. The Bridge to Global Integration. IEEE
Conference_Location :
Sydney,NSW
Print_ISBN :
0-7803-4984-9
DOI :
10.1109/GLOCOM.1998.775918
