U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Training sequence for a radio communications system

Patent 6731689 Issued on May 4, 2004. Estimated Expiration Date: Icon_subject February 19, 2022. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Patent References

642220

Processor for a TDMA burst modem
Patent #: 4232197
Issued on: 11/04/1980
Inventor: Acampora ,   et al.

Method and apparatus for detecting the training sequence for a self-adapting equalizer
Patent #: 4433425
Issued on: 02/21/1984
Inventor: de Jaeger

Offset frequency multipoint modem and communications network
Patent #: 5052024
Issued on: 09/24/1991
Inventor: Moran, III, et al.

Method and apparatus for frequency hopping a signalling channel in a communication system
Patent #: 5381443
Issued on: 01/10/1995
Inventor: Borth, et al.

Method and apparatus for supporting TDMA operating over hybrid fiber coaxial (HFC) or other channels
Patent #: 5666358
Issued on: 09/09/1997
Inventor: Paratore, et al.

Method of upstream channel modeling for PCM modem
Patent #: 5887027
Issued on: 03/23/1999
Inventor: Cohen, et al.

Method and apparatus for decision directed demodulation using antenna arrays and spatial processing
Patent #: 5909470
Issued on: 06/01/1999
Inventor: Barratt, et al.

Method and apparatus for estimating parameters of a communication system using antenna arrays and spatial processing
Patent #: 5930243
Issued on: 07/27/1999
Inventor: Parish, et al.

AM compatible digital audio broadcasting signal transmision using digitally modulated orthogonal noise-like sequences
Patent #: 5956373
Issued on: 09/21/1999
Inventor: Goldston, et al.

More ...

Inventor

Application

No. 10079620 filed on 02/19/2002

US Classes:

375/259SYSTEMS USING ALTERNATING OR PULSATING CURRENT

Examiners

Primary: Bayard, Emmanuel

Attorney, Agent or Firm

Foreign Patent References

  • WO9818272 WO 04/01/1998
  • WO9853561 WO 11/01/1998
  • WO0059147 WO 10/01/2000

International Class

H04L 2700

Abstract

A training sequence for a radio communications system is provided. According to one aspect of the present invention, the invention includes a core sequence of symbols, a successive repetition of the core sequence, and a marker sequence having a sequence of symbols different from the core sequence.

Other References

  • Brown et al , Low-power Correlator Architectures for Wideband CDMA Code Acquisition, IEEE 1999, p.p. 125-129.*
  • Granzow et al, High-Quality Speech at 4 kb/s, IEEE 1990, p.p. 0941-0945.*
  • Shi et al, a New Rapid Acquisition Scheme For Burst Mode DS Spread Spectrum Packet Radio, IEEE 1991, p.p. 0809-0813.*
  • PCT Search Report, PCT/US 01/42494, May 6, 2002, 4 pps.
PatentsPlus Images
Enhanced PDF formats
loading...
PatentsPlus: add to cart
PatentsPlus: add to cartSearch-enhanced full patent PDF image
$9.95more info
PatentsPlus: add to cart
PatentsPlus: add to cartIntelligent turbocharged patent PDFs with marked up images
$16.95more info
 
Sign InRegister
Username  
Password   
forgot password?