发明授权
- 专利标题: Apparatus and method for initial fractional frequency offset estimation in a broadband wireless access communication system
- 专利标题(中): 宽带无线接入通信系统中初始分数频偏估计的装置和方法
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申请号: US12030370申请日: 2008-02-13
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公开(公告)号: US07907682B2公开(公告)日: 2011-03-15
- 发明人: In-Chun Lim , Yong-Sun Hwang , Bong-Gee Song
- 申请人: In-Chun Lim , Yong-Sun Hwang , Bong-Gee Song
- 申请人地址: KR Suwon-si
- 专利权人: Samsung Electronics Co., Ltd.
- 当前专利权人: Samsung Electronics Co., Ltd.
- 当前专利权人地址: KR Suwon-si
- 代理机构: Jefferson IP Law, LLP
- 优先权: KR10-2007-0014655 20070213
- 主分类号: H04L27/00
- IPC分类号: H04L27/00
摘要:
An apparatus and method for initial fractional frequency offset estimation are provided. In an apparatus for estimating an initial fractional frequency offset in a Broadband Wireless Access (BWA) communication system, the apparatus includes a sample power calculator for calculating a power of input sample data and for calculating an average power of a specific symbol, a power threshold comparator for comparing the sample data power in magnitude with the average power of the specific symbol and for outputting one of an accumulation ON and OFF signal, a first buffer for correlating a last data of the sample data with the sample data and for storing sample data corresponding to a preset number of correlation results, a second buffer for storing sample data corresponding to correlation results other than the sample data stored in the first buffer; and an accumulator for allowing accumulation of sample data stored in the second buffer if the power threshold comparator outputs the accumulation ON signal.