Title :
On interference suppression using complementary filters in DS-SSS
Author :
Lee, Bong Woon ; Essman, Joseph E.
Author_Institution :
Ohio Univ., Athens, OH, USA
Abstract :
An alternate interference suppression method used in conjunction with direct-sequence spread-spectrum systems (DS-SSS) is proposed. It consists of a complementary filter and reference loop using a scalar filter in the Walsh-Hadamard domain. Analytical expressions for chip-error probability (Pe) in the reference loop are given, and the performance of the complementary filter is compared with that of the other suppression filters via a simulation. The results show that the complementary filter is superior to the other filters when Pe is less than 0.25
Keywords :
digital filters; filtering and prediction theory; interference suppression; spread spectrum communication; DS-SSS; Walsh-Hadamard domain; chip-error probability; complementary filter; digital filters; direct-sequence spread-spectrum systems; interference suppression; scalar filter reference loop; Band pass filters; Error probability; Filtering; Interference suppression; Low pass filters; Nonlinear filters; Performance analysis; Signal processing; Spread spectrum communication; Wiener filter;
Conference_Titel :
Military Communications Conference, 1989. MILCOM '89. Conference Record. Bridging the Gap. Interoperability, Survivability, Security., 1989 IEEE
Conference_Location :
Boston, MA
DOI :
10.1109/MILCOM.1989.103975
