The conditions required to implement real-time adaptive prediction filters that provide nearly
optimal performance in realistic input conditions are delineated. The effects of signal …

A fast algorithm for implementation of the QR-factorization-based recursive-least-squares
(RLS) adaptive filter is discussed. This fast adaptive rotors (FAR) algorithm can be …

In direct-sequence (DS) spread-spectrum communications, it is often necessary to obtain
pseudo-noise (PN) code synchronization in the presence of both narrowband interference …

It is already known that the performance of narrowband interference adaptive filtering in DS
spread spectrum systems is additionally degraded in the presence of a frequency hopped …

A modified fully digital pseudonoise code tracking loop is proposed for direct-sequence
spread-spectrum communication. By taking advantage of the inherent diversity, a modified …

The fading characteristics of the HF channel make communication over this channel difficult,
even at moderate data rates. In this correspondence, a practical communication system is …

The author considers the problem of demodulating a direct-sequence (DS) spread-spectrum
signal in the presence of narrowband interference and multipath. A receiver is considered …

The performance of a direct sequence QPSK spread-spectrum receiver using adaptive filters
in the presence of frequency hopped interference is analyzed. The analysis includes both …

The purpose of this paper is to design a stable and high-performance adaptive filter for
suppressing irregular hostile jamming in direct sequence (DS) spread-spectrum systems. A …

A direct sequence spread-spectrum system, employing a least-squares equalizer is shown
to perform nearly as well as the optimal receiver under certain conditions. The system …