Invention Grant
US07697639B2 Apparatus and method for robust BPSK/QPSK blind modulation classification against errors in satellite control system
失效
用于对卫星控制系统中的误差进行鲁棒BPSK / QPSK盲调制分类的装置和方法
- Patent Title: Apparatus and method for robust BPSK/QPSK blind modulation classification against errors in satellite control system
- Patent Title (中): 用于对卫星控制系统中的误差进行鲁棒BPSK / QPSK盲调制分类的装置和方法
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Application No.: US11442078Application Date: 2006-05-25
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Publication No.: US07697639B2Publication Date: 2010-04-13
- Inventor: Il-Han Kim , Joon-Gyu Ryu , Ho-Kyom Kim , Deock-Gil Oh
- Applicant: Il-Han Kim , Joon-Gyu Ryu , Ho-Kyom Kim , Deock-Gil Oh
- Applicant Address: KR
- Assignee: Electronics and Telecommunications Research Institute
- Current Assignee: Electronics and Telecommunications Research Institute
- Current Assignee Address: KR
- Agency: Blakely, Sokoloff, Taylor & Zafman
- Priority: KR10-2005-0043905 20050525
- Main IPC: H03D3/22
- IPC: H03D3/22
Abstract:
Provided are an apparatus and method for robust Binary Phase Shift Keying/Quadrature Phase Shift Keying (BPSK/QPSK) blind modulation classification. The apparatus includes first and second likelihood value calculators for calculating a likelihood value of a received baseband signal each for of BPSK and QPSK modulation modes. A maximum setting unit derives a maximum value of the likelihood values or ith likelihood ratios calculated by the first and second likelihood value calculators. A flag is set for the maximum value to “1” and a flag for the remaining value is set to “0”. First and second flag combining units combine the flags for the modulation modes. A modulation mode flag setting unit selects a maximum value from the flags combined by the first and second flag combining units.
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