发明申请
- 专利标题: TRANSMISSION SCHEMES FOR MULTI-ANTENNA COMMUNICATION SYSTEMS UTILIZING MULTI-CARRIER MODULATION
- 专利标题(中): 使用多载波调制的多天线通信系统的传输方案
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申请号: US12558073申请日: 2009-09-11
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公开(公告)号: US20100003931A1公开(公告)日: 2010-01-07
- 发明人: Ranganathan Krishnan , Anand D. Subramaniam , Tamer Kadous
- 申请人: Ranganathan Krishnan , Anand D. Subramaniam , Tamer Kadous
- 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
- 主分类号: H04B7/02
- IPC分类号: H04B7/02
摘要:
Pilot and data transmission schemes for multi-antenna communication systems utilizing multi-carrier modulation are provided. Subband multiplexing is used to avoid interference resulting from transmitting multiple signals simultaneously from multiple antennas. M usable subbands are initially arranged to form multiple groups of subbands, with each group including a different subset of the usable subbands. Each of T transmit antennas is then assigned one or possibly more subband groups for pilot transmission and typically one subband group for data transmission. Pilot and data may then be transmitted from each antenna on the subbands assigned to that antenna for pilot and data transmission. For each transmit antenna, the transmit power for each assigned subband may be scaled higher such that all of the total transmit power available for the antenna is used for transmission. Pilot and/or data may be transmitted simultaneously from all T antennas on all usable subbands without causing mutual interference.