Title:
無線ローカル・エリア・ネットワーク用の多重路軽減機能を備えたスペクトル拡散方式トランシーバー
Document Type and Number:
Japanese Patent JP2004500725
Kind Code:
A
Abstract:
A method and spread spectrum transceiver for demodulating a spread spectrum signal is disclosed. A spread spectrum phase shift keyed (PSK) modulated information signal is received within a demodulator of a spread spectrum receiver on a signal channel. The information signal includes a sequence of data symbols formed from a plurality of high rate mode chips. A precursor portion of the signal channel is Viterbi detected. A multi-state trellis is formed having a predetermined number of states. A post-cursor portion of the signal channel is feedback equalized with a finite impulse response filter having feedback taps operatively connected to a chip detection circuit that tracks high rate mode chips and a carrier loop circuit for phase and frequency tracking. The information signal is despread within a spread spectrum code function correlator.
Inventors:
Karl Andren
Webster, Mark A
Webster, Mark A
Application Number:
JP2000538443A
Publication Date:
January 08, 2004
Filing Date:
January 15, 1999
Export Citation:
Assignee:
INTERSIL CORPORATION
International Classes:
H04L27/227; H04B1/707; H04B1/711; H04B7/08; H04L12/28; H04L25/03; H04B1/709; (IPC1-7): H04L27/227; H04B1/707
Attorney, Agent or Firm:
Tadahiko Ito