发明授权
US07610024B2 Methods and apparatus of providing transmit and/or receive diversity with multiple antennas in wireless communication systems
有权
在无线通信系统中提供与多个天线的发射和/或接收分集的方法和装置
- 专利标题: Methods and apparatus of providing transmit and/or receive diversity with multiple antennas in wireless communication systems
- 专利标题(中): 在无线通信系统中提供与多个天线的发射和/或接收分集的方法和装置
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申请号: US11284285申请日: 2005-11-21
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公开(公告)号: US07610024B2公开(公告)日: 2009-10-27
- 发明人: Rajiv Laroia , Junyi Li , Sundeep Rangan , Murari Srinivasan , Frank A. Lane , Prashanth Hande
- 申请人: Rajiv Laroia , Junyi Li , Sundeep Rangan , Murari Srinivasan , Frank A. Lane , Prashanth Hande
- 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
- 代理商 Michael P. Straub; Milan I. Patel
- 主分类号: H04B7/06
- IPC分类号: H04B7/06
摘要:
Transmit and/or receive diversity is achieved using multiple antennas. In some embodiments, a single transmitter chain within a wireless terminal is coupled over time to a plurality of transmit antennas. At any given time, a controllable switching module couples the single transmitter chain to one the plurality of transmit antennas. Over time, the switching module couples the output signals from the single transmitter chain to different transmit antennas. Switching decisions are based upon predetermined information, dwell information, and/or channel condition feedback information. Switching is performed on some dwell and/or channel estimation boundaries. In some OFDM embodiments, each of multiple transmitter chains is coupled respectively to a different transmit antenna. Information to be transmitted is mapped to a plurality of tones. Different subsets of tones are formed for and transmitted through different transmit chain/antenna sets simultaneously. The balance of tones allocated to the subsets for each antenna are changed as a function of predetermined information, dwell information, and/or channel condition feedback information.