发明申请
- 专利标题: Frequency offset estimation scheme in scheduled based wireless system
- 专利标题(中): 基于计划的无线系统中的频偏预测方案
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申请号: US13172075申请日: 2011-06-29
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公开(公告)号: US20130003568A1公开(公告)日: 2013-01-03
- 发明人: Hongyu Xie , Yuan Zhuang , Murat Mese , Brima Ibrahim
- 申请人: Hongyu Xie , Yuan Zhuang , Murat Mese , Brima Ibrahim
- 申请人地址: US CA IRVINE
- 专利权人: BROADCOM CORPORATION
- 当前专利权人: BROADCOM CORPORATION
- 当前专利权人地址: US CA IRVINE
- 主分类号: H04W24/00
- IPC分类号: H04W24/00
摘要:
A technique to provide frequency offset estimation for packets transmitted during a service period allocated strictly for designated source and destination devices. The destination device obtains coarse and fine frequency offset estimation from the short and long preambles. A residual frequency offset is tracked for the data blocks and combined with the coarse and fine frequency offset to obtain a total frequency offset to apply to the data blocks. The total frequency offset value at the end of the first packet is saved and, instead of again estimating the coarse and fine frequency offset values with the short and long preambles of the second packet, the saved total frequency offset value is used as the initialization value to add to the residual frequency offset in the second packet. The saved offset value at the end of each packet becomes the initialization value for the subsequent packet.