Invention Grant
US07957341B2 Frequency correction in a multi-carrier communication system 有权
多载波通信系统中的频率校正

  • Patent Title: Frequency correction in a multi-carrier communication system
  • Patent Title (中): 多载波通信系统中的频率校正
  • Application No.: US11908253
    Application Date: 2006-12-11
  • Publication No.: US07957341B2
    Publication Date: 2011-06-07
  • Inventor: Xiaodong LiTitus Lo
  • Applicant: Xiaodong LiTitus Lo
  • Applicant Address: US WA Bellevue
  • Assignee: Neocific, Inc.
  • Current Assignee: Neocific, Inc.
  • Current Assignee Address: US WA Bellevue
  • Agency: Perkins Coie LLP
  • International Application: PCT/US2006/061881 WO 20061211
  • International Announcement: WO2007/068001 WO 20070614
  • Main IPC: H04W4/00
  • IPC: H04W4/00
Frequency correction in a multi-carrier communication system
Abstract:
Methods and systems for correction of frequency errors in multi-carrier communication systems. The composite frequency error associated with the downlink signals are used to infer or derive the composite frequency error associated with the uplink signals, which are used to pre-compensate the uplink signals. Special signal components are transmitted by multiple base stations to facilitate frequency-error estimation and other system control functionalities at a mobile device. The mobile device carries out temporal, spatial, or spatial-temporal processing of the composite frequency errors associated with one or more base stations to determine the clock frequency error and the Doppler shift with respect to its serving base station.
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