发明授权
US08045448B2 Apparatus and method for detecting packet of zero-padded OFDM signal
失效
用于检测零填充OFDM信号的分组的装置和方法
- 专利标题: Apparatus and method for detecting packet of zero-padded OFDM signal
- 专利标题(中): 用于检测零填充OFDM信号的分组的装置和方法
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申请号: US12189931申请日: 2008-08-12
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公开(公告)号: US08045448B2公开(公告)日: 2011-10-25
- 发明人: Kyu-Min Kang , Sang-In Cho , Sangsung Choi
- 申请人: Kyu-Min Kang , Sang-In Cho , Sangsung Choi
- 申请人地址: KR Daejeon
- 专利权人: Electronics and Telecommunications Research Institute
- 当前专利权人: Electronics and Telecommunications Research Institute
- 当前专利权人地址: KR Daejeon
- 代理机构: Staas & Halsey LLP
- 优先权: KR10-2007-0127737 20071210
- 主分类号: H04J11/00
- IPC分类号: H04J11/00
摘要:
Provided is an apparatus and method for detecting a packet of a zero-padded OFDM signal, which are capable of determining if a packet exists in a reception (RX) signal by comparing a cross-correlation value of an OFDM signal delayed by a predetermined sample time, e.g., a zero-padded sample time, with a power value of the RX signal, thereby increasing a packet detection probability and preventing a false alarm. The packet detecting apparatus includes: a cross-correlation calculator for calculating a cross-correlation value of a reception signal received from the outside and delaying the calculated cross-correlation value by a predetermined sample time; a power calculator for calculating a power value of the reception signal; and a packet detector for determining if a packet exists in the reception signal by comparing the delayed cross-correlation value with the calculated power value, and detecting the corresponding packet.