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    • 1. 发明授权
    • Downlink synchronization for a cellular OFDM communication system
    • 用于蜂窝OFDM通信系统的下行链路同步
    • US08134996B2
    • 2012-03-13
    • US11459313
    • 2006-07-21
    • Eko N. OnggosanusiAnand G. DabakTimothy M. SchmidlAlan Gatherer
    • Eko N. OnggosanusiAnand G. DabakTimothy M. SchmidlAlan Gatherer
    • H04J3/06
    • H04L27/2613H04J11/0069H04L5/0007H04L27/2657H04L27/2662
    • The present invention provides a method of operating a base station transmitter. In one embodiment, the method includes providing a cellular downlink synchronization signal having primary and secondary portions, wherein the primary portion is common for all cells and the secondary portion is cell-specific and transmitting the cellular downlink synchronization signal. In another embodiment, the method includes providing a cellular downlink synchronization signal having primary and secondary portions wherein the primary portion employs a corresponding one of a plurality of different primary signals allocated to adjoining transmission cells. The method also includes further providing cell-specific information in the secondary portion and transmitting the cellular downlink synchronization signal. The present invention also provides a method of operating user equipment. The method includes receiving a cellular downlink synchronization signal having primary and secondary portions wherein the secondary portion provides cell-specific parameters and identifying and extracting the secondary portion.
    • 本发明提供一种操作基站发射机的方法。 在一个实施例中,该方法包括提供具有主要和次要部分的蜂窝下行链路同步信号,其中主要部分对于所有小区是公共的,并且次要部分是小区特定的,并且发送蜂窝下行链路同步信号。 在另一个实施例中,该方法包括提供具有主要和次要部分的蜂窝下行链路同步信号,其中主要部分采用分配给相邻传输小区的多个不同主信号中的相应一个信号。 该方法还包括在次级部分中进一步提供小区特定信息并发送蜂窝下行同步信号。 本发明还提供了一种操作用户设备的方法。 该方法包括接收具有主要和次要部分的蜂窝下行链路同步信号,其中辅助部分提供小区特定参数并且识别和提取次要部分。
    • 2. 发明申请
    • DOWNLINK SYNCHRONIZATION FOR A CELLULAR OFDM COMMUNICATION SYSTEM
    • 用于蜂窝OFDM通信系统的下行同步
    • US20080019350A1
    • 2008-01-24
    • US11459313
    • 2006-07-21
    • Eko N. OnggosanusiAnand G. DabakTimothy M. SchmidlAlan Gatherer
    • Eko N. OnggosanusiAnand G. DabakTimothy M. SchmidlAlan Gatherer
    • H04J3/06
    • H04L27/2613H04J11/0069H04L5/0007H04L27/2657H04L27/2662
    • The present invention provides a method of operating a base station transmitter. In one embodiment, the method includes providing a cellular downlink synchronization signal having primary and secondary portions, wherein the primary portion is common for all cells and the secondary portion is cell-specific and transmitting the cellular downlink synchronization signal. In another embodiment, the method includes providing a cellular downlink synchronization signal having primary and secondary portions wherein the primary portion employs a corresponding one of a plurality of different primary signals allocated to adjoining transmission cells. The method also includes further providing cell-specific information in the secondary portion and transmitting the cellular downlink synchronization signal. The present invention also provides a method of operating user equipment. The method includes receiving a cellular downlink synchronization signal having primary and secondary portions wherein the secondary portion provides cell-specific parameters and identifying and extracting the secondary portion.
    • 本发明提供一种操作基站发射机的方法。 在一个实施例中,该方法包括提供具有主要和次要部分的蜂窝下行链路同步信号,其中主要部分对于所有小区是公共的,并且次要部分是小区特定的,并且发送蜂窝下行链路同步信号。 在另一个实施例中,该方法包括提供具有主要和次要部分的蜂窝下行链路同步信号,其中主要部分采用分配给相邻传输小区的多个不同主信号中的相应一个信号。 该方法还包括在次级部分中进一步提供小区特定信息并发送蜂窝下行同步信号。 本发明还提供了一种操作用户设备的方法。 该方法包括接收具有主要和次要部分的蜂窝下行链路同步信号,其中辅助部分提供小区特定参数并且识别和提取次要部分。
    • 3. 发明授权
    • Code division multiple access wireless system with time reversed space time block transmitter diversity
    • 码分多址无线系统具有时间反转空间时间块发射机多样性
    • US07154958B2
    • 2006-12-26
    • US09885878
    • 2001-06-20
    • Anand G. DabakEko N. OnggosanusiTimothy M SchmidlAlan Gatherer
    • Anand G. DabakEko N. OnggosanusiTimothy M SchmidlAlan Gatherer
    • H04B7/06
    • H04L1/0631H04B1/7115H04B7/0613H04J13/00H04J13/0048H04L1/0065H04L1/0071H04L1/0618
    • A wireless communication network (10) includes a wireless transmitter having a plurality of antennas (AT11, AT12). The transmitter includes for each of a plurality of different user channels (Dn), circuitry (22n) for providing a plurality of groups of symbols in a first symbol group sequence (D1n). Each of the plurality of different user channels includes circuitry (241n) for forming a first modulated symbol group sequence for the user channel by modulating the symbols in the first symbol group sequence with a unique code that corresponds to the user channel and distinguishes the user channel from each other of the plurality of different user channels and circuitry (261) for combining the first modulated symbol group sequences for transmission by a first antenna (AT11). Each of the plurality of different user channels includes circuitry (22n) for forming a second symbol group sequence (D2n) by time reversing symbols in at least some of the groups of symbols.
    • 无线通信网络(10)包括具有多个天线(AT 1> 1,AT 1 2 N 2)的无线发射机。 发射机包括用于多个不同用户信道(D S)中的每一个,用于在第一符号组序列中提供多个符号组的电路(22) (D n> n)。 多个不同用户信道中的每一个包括用于通过调制第一符号组中的符号来形成用于用户信道的第一调制符号组序列的电路(24< n0> n) 序列,其具有对应于用户信道的唯一代码,并且将用户信道与多个不同用户信道中的用户信道和电路(26 1)进行区分,用于组合用于传输的第一调制符号组序列 第一天线(AT 1 1 1)。 多个不同的用户信道中的每一个包括用于通过时间反转来形成第二符号组序列(D 2> n )的电路(22 ) 符号中的至少一些符号组。