发明授权
- 专利标题： Integer spreading rotation matrices for QAM constellations and its decode-remodulate-forward cooperative communication strategy
- 专利标题（中）： 用于QAM星座的整数扩展旋转矩阵及其解码重构协作通信策略
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申请号： US12096975申请日： 2006-12-08
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公开(公告)号： US08509352B2公开(公告)日： 2013-08-13
- 发明人: Jun Yang , Monisha Ghosh
- 申请人： Jun Yang , Monisha Ghosh
- 申请人地址： NL Eindhoven
- 专利权人： Koninklijke Philips Electronics N.V.
- 当前专利权人： Koninklijke Philips Electronics N.V.
- 当前专利权人地址： NL Eindhoven
- 代理商 Larry Liberchuk
- 国际申请： PCT/IB2006/054720 WO 20061208
- 国际公布： WO2007/069172 WO 20070621
- 主分类号： H03K9/00
- IPC分类号： H03K9/00
摘要：
Diversity techniques are commonly used in wireless communications to combat multipath fading. Recent interests in ultra-wideband technology focus on multi-band OFDM systems that can explore the high diversity due to the independent frequency bands. To achieve full diversity with high data rate, a system, apparatus and method that uses coded modulation with spreading rotation of transmitted signals. A 2×2 integer rotation matrix for QAM signals, 3×3 and 4×4 integer rotation matrices for QAM signals are provided. Compared with the non-regular QAM shape for real rotation matrices, each of these integer rotation matrices makes the regular QAM shape after rotation.
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