发明授权
- 专利标题： Spatial spreading with space-time and space-frequency transmit diversity schemes for a wireless communication system
- 专利标题（中）： 用于无线通信系统的空时和空频发射分集方案的空间扩展
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申请号： US11217818申请日： 2005-09-01
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公开(公告)号： US07894548B2公开(公告)日： 2011-02-22
- 发明人: Jay Rodney Walton , John W. Ketchum , Mark S. Wallace , Steven J. Howard
- 申请人： Jay Rodney Walton , John W. Ketchum , Mark S. Wallace , Steven J. Howard
- 申请人地址： US CA San Diego
- 专利权人： Qualcomm Incorporated
- 当前专利权人： Qualcomm Incorporated
- 当前专利权人地址： US CA San Diego
- 代理机构： Qualcomm Patent Group
- 代理商 Dmitry R. Milikovsky; James H. Yancey, Jr.
- 主分类号： H04L27/04
- IPC分类号： H04L27/04
摘要：
Techniques for transmitting data using a combination of transmit diversity schemes are described. These transmit diversity schemes include spatial spreading, continuous beamforming, cyclic delay diversity, space-time transmit diversity (STTD), space-frequency transmit diversity (SFTD), and orthogonal transmit diversity (OTD). A transmitting entity processes one or more (ND) data symbol streams based on a transmit diversity scheme (e.g., STTD, SFTD, or OTD) to generate multiple (NC) coded symbol streams. Each data symbol stream may be sent as a single coded symbol stream or as multiple (e.g., two) coded symbol streams using STTD, SFTD, or OTD. The transmitting entity may perform spatial spreading on the NC coded symbol streams with different matrices to generate multiple (NT) transmit symbol streams for transmission from NT antennas. Additionally or alternatively, the transmitting entity may perform continuous beamforming on the NT transmit symbol streams in either the time domain or the frequency domain.
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