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发明申请
US20070165699A1 Code Division Multiple Access Wireless System With Closed Loop Mode Using Ninety Degree Phase Rotation and Beamformer Verification 有权
使用九十度相位旋转和波束成形器验证的闭环模式的码分多址无线系统

  • 专利标题： Code Division Multiple Access Wireless System With Closed Loop Mode Using Ninety Degree Phase Rotation and Beamformer Verification
  • 专利标题（中）： 使用九十度相位旋转和波束成形器验证的闭环模式的码分多址无线系统
  • 申请号： US11681088
    申请日： 2007-03-01
  • 公开(公告)号： US20070165699A1
    公开(公告)日： 2007-07-19
  • 发明人: Anand Dabak , Eko Onggosanusi
  • 申请人： Anand Dabak , Eko Onggosanusi
  • 主分类号： H04B1/00
  • IPC分类号： H04B1/00
Code Division Multiple Access Wireless System With Closed Loop Mode Using Ninety Degree Phase Rotation and Beamformer Verification
摘要：
A wireless communication system (10). The system comprises a user station (12). The user station comprises despreading circuitry (22) for receiving and despreading a plurality of slots received from at least a first transmit antenna (A121) and a second transmit antenna (A122) at a transmitting station (14). Each of the plurality of slots comprises a first channel (DPCH) comprising a first set of pilot symbols and a second channel (PCCPCH) comprising a second set of pilot symbols. The user station further comprises circuitry (50) for measuring a first channel measurement (α1,n) for each given slot in the plurality of slots from the first transmit antenna and in response to the first set of pilot symbols in the given slot. The user station further comprises circuitry (50) for measuring a second channel measurement (a2,n) for each given slot in the plurality of slots from the second transmit antenna and in response to the first set of pilot symbols in the given slot. The user station further comprises circuitry (52) for measuring a phase difference value (φ2(n)) for each given slot in the plurality of slots in response to the first channel measurement and the second channel measurement for the given slot and in response to a ninety degree rotation of the given slot relative to a slot which was received by the despreading circuitry immediately preceding the given slot.
摘要（中）：

一种无线通信系统（10）。 该系统包括用户站（12）。 用户站包括解扩电路（22），用于接收和解扩从至少第一发射天线（A 12 1 1）和第二发射天线（A 12＆lt; 2＆gt; 1＆ / SUB>）。 多个时隙中的每一个包括包括第一组导频符号的第一信道（DPCH）和包括第二组导频符号的第二信道（PCCPCH）。 用户站还包括电路（50），用于测量来自第一发射天线的多个时隙中的每个给定时隙的第一信道测量（α1，n N），并且响应于第一组 导频符号在给定的时隙。 用户站还包括电路（50），用于测量来自第二发射天线的多个时隙中的每个给定时隙的第二信道测量（α2，n N），并且响应于第一组 导频符号在给定的时隙。 用户站还包括用于响应于第一信道测量和第二信道测量而针对多个时隙中的每个给定时隙测量相位差值（phi <2> 2（n））的电路（52） 对于给定的时隙，并且响应于给定时隙相对于由紧接在给定时隙之前的解扩电路接收的时隙的九十度旋转。

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