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    • 24. 发明申请
    • Code Division Multiple Access Wireless System With Closed Loop Mode Using Ninety Degree Phase Rotation and Beamformer Verification
    • 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
    • US20070165699A1
    • 2007-07-19
    • US11681088
    • 2007-03-01
    • Anand DabakEko Onggosanusi
    • Anand DabakEko Onggosanusi
    • H04B1/00
    • H04B7/0615H04B7/0617H04B7/0634H04B7/0645H04B7/0654H04B7/0857H04B17/104H04B17/24
    • 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.
    • 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。
    • 28. 发明申请
    • Code division multiple access wireless system with closed loop mode using ninety degree phase rotation and beamformer verification
    • 码分多址无线系统采用闭环模式,采用九十度相位旋转和波束形成器验证
    • US20050026566A1
    • 2005-02-03
    • US10919470
    • 2004-08-16
    • Anand DabakEko Onggosanusi
    • Anand DabakEko Onggosanusi
    • H04B7/06H04B7/08H04B17/00H04B1/02H04B1/04
    • H04B7/0615H04B7/0617H04B7/0634H04B7/0645H04B7/0654H04B7/0857H04B17/104H04B17/24
    • 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 (α2,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.
    • 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),用于在发射站(14)处接收和解扩从至少第一发射天线(A121)和第二发射天线(A122)接收的多个时隙。 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)以及响应于给定时隙中的第一组导频符号的电路(50)。 用户站还包括电路(50),用于响应于给定时隙中的第一组导频符号,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)。 用户站还包括电路(52),用于响应于给定时隙的第一信道测量和第二信道测量以及响应于第二信道测量而测量多个时隙中的每个给定时隙的相位差值(phi2(n)), 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。
    • 30. 发明申请
    • Wireless precoding methods
    • 无线预编码方法
    • US20060029157A1
    • 2006-02-09
    • US11199629
    • 2005-08-09
    • Anand DabakEko Onggosanusi
    • Anand DabakEko Onggosanusi
    • H04L27/20
    • H04B7/0456H04B7/0417H04B7/0619H04L5/023H04L25/0206H04L27/2608
    • Various wireless precoding systems and methods are presented. In some embodiments, a wireless transmitter comprises an antenna preceding block, a transform block, and multiple transmit antennas. The antenna preceding block receives frequency coefficients from multiple data streams and distributes the frequency coefficients across multiple transmit signals in accordance with frequency-dependent matrices. The transform block transforms the precoded frequency coefficients into multiple time domain transmit signals to be transmitted by the multiple antennas. The frequency coefficients from multiple data streams may be partitioned into tone groups, and all the frequency coefficients from a given tone group may be redistributed in accordance with a single matrix for that tone group. In some implementations, the frequency coefficients within a tone group for a given data stream may also be precoded. In some alternative embodiments, tone group preceding may be employed in a single channel system.
    • 提出了各种无线预编码系统和方法。 在一些实施例中,无线发射机包括先前块天线,变换块和多个发射天线。 天线先前块从多个数据流接收频率系数,并根据频率依赖矩阵在多个发射信号之间分配频率系数。 变换块将预编码的频率系数转换成由多个天线发射的多个时域发射信号。 来自多个数据流的频率系数可以被划分为音调组,并且来自给定音调组的所有频率系数可以根据该音调组的单个矩阵重新分配。 在一些实现中,给定数据流的音调组内的频率系数也可以被预编码。 在一些替代实施例中,可以在单个信道系统中采用先前的音调组。