Invention Grant
US07643577B2 Carrier and symbol timing recovery apparatus usable with a vestigial side band receiver and recovery method thereof 有权
可用于残留边带接收机的载波和符号定时恢复装置及其恢复方法

  • Patent Title: Carrier and symbol timing recovery apparatus usable with a vestigial side band receiver and recovery method thereof
  • Patent Title (中): 可用于残留边带接收机的载波和符号定时恢复装置及其恢复方法
  • Application No.: US11237815
    Application Date: 2005-09-29
  • Publication No.: US07643577B2
    Publication Date: 2010-01-05
  • Inventor: Dong-hoon Lee
  • Applicant: Dong-hoon Lee
  • Applicant Address: KR Suwon-si
  • Assignee: Samsung Electronics Co., Ltd.
  • Current Assignee: Samsung Electronics Co., Ltd.
  • Current Assignee Address: KR Suwon-si
  • Agency: Stanzione & Kim LLP
  • Priority: KR10-2004-0079992 20041007
  • Main IPC: H03D1/24
  • IPC: H03D1/24
Carrier and symbol timing recovery apparatus usable with a vestigial side band receiver and recovery method thereof
Abstract:
A carrier and symbol timing recovery apparatus usable in a VSB (Vestigial Side Band) receiver, and a method thereof. For a carrier and symbol timing recovery, error information is detected using a pilot signal, an upper sideband and a lower sideband of a received signal. Each of the detected error information is multiplied by a predetermined weight, respectively, and the results of the respective multiplications are added/combined. Therefore, even though the pilot signal may be corrupted, the carrier recovery can nevertheless be accurately performed. Additionally, even though the upper sideband of a received VSB-modulated signal may be corrupted, the lower sideband can be utilized to perform the symbol timing recovery. As a result, performance of a receiving system can be improved even under unfavorable channel characteristics. Moreover, since the carrier recovery and the symbol timing recovery are executed through a single apparatus, it becomes possible to simplify a hardware implementation thereof.
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