发明授权
- 专利标题: Carrier signals for synchronization
- 专利标题(中): 载波信号用于同步
-
申请号: US12814206申请日: 2010-06-11
-
公开(公告)号: US08451814B2公开(公告)日: 2013-05-28
- 发明人: Walter Rausch , Harry Perlow
- 申请人: Walter Rausch , Harry Perlow
- 申请人地址: US WA Bellevue
- 专利权人: Clearwire IP Holdings LLC
- 当前专利权人: Clearwire IP Holdings LLC
- 当前专利权人地址: US WA Bellevue
- 代理机构: McDonnell Boehnen Hubert & Berghoff LLP
- 主分类号: H04W4/00
- IPC分类号: H04W4/00 ; H04J3/06
摘要:
Disclosed herein are methods and systems that may help a WiMAX base station function without a GPS signal by providing a high-stability reference signal via a subcarrier of a broadcast signal, such as an FM radio signal. An exemplary broadcast station may therefore be configured to phase-lock a subcarrier signal to a GPS signal, and include this subcarrier in its broadcast signal, thereby providing the subcarrier signal for use by a base station as a high-stability reference signal for local-oscillator stabilization at the base station. The broadcast station may further modulate a timing signal onto the subcarrier signal. An exemplary base station may therefore receive the broadcast signal, decode the broadcast signal to acquire the subcarrier signal, and use the subcarrier signal to stabilize its local oscillator, rather than using a GPS signal. The base station may further demodulate the subcarrier to acquire the timing signal, which the base station may use for frame-start synchronization, instead of a GPS signal.
公开/授权文献
- US20110305146A1 Carrier Signals For Synchronization 公开/授权日:2011-12-15