Title :
An adaptive direct-sequence spread-spectrum receiver for operation in fading channels with narrowband interference
Author_Institution :
Dept. of Electr. & Comput. Eng., California Univ., Santa Barbara, CA, USA
fDate :
28 Nov-1 Dec 1988
Abstract :
An adaptive version of the GLRT (general likelihood-ratio test) receiver is presented, where the recursive least-squares (RLS) algorithm provides the desired joint estimates. Bit-error rate results are presented for a direct-sequence receiver with differential detection as a function of the number of iterations of the RLS algorithm. It is shown that convergence is achieved within a time period of 3 to 10 bit durations, depending on the particular combination of multipath and interference present. The GLRT receiver considered uses differential phase-shift keying (DPSK)
Keywords :
fading; least squares approximations; phase shift keying; radio receivers; radiofrequency interference; spread spectrum communication; telecommunication channels; BER; DPSK; RLS algorithm; adaptive direct-sequence spread-spectrum receiver; bit error rate; convergence; differential detection; differential phase-shift keying; fading channels; general likelihood-ratio test; iterations; joint estimates; narrowband interference; recursive least-squares; Bit error rate; Differential quadrature phase shift keying; Fading; Frequency; Interference; Narrowband; RAKE receivers; Resonance light scattering; Spread spectrum communication; Testing;
Conference_Titel :
Global Telecommunications Conference, 1988, and Exhibition. 'Communications for the Information Age.' Conference Record, GLOBECOM '88., IEEE
Conference_Location :
Hollywood, FL
DOI :
10.1109/GLOCOM.1988.25898
