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    • 3. 发明申请
    • Loudspeaker
    • 喇叭
    • US20130058521A1
    • 2013-03-07
    • US13696742
    • 2011-05-18
    • Julia DavidsonJack Anthony Oclee Brown
    • Julia DavidsonJack Anthony Oclee Brown
    • H04R1/00
    • H04R7/18H04R7/26H04R9/043H04R2307/201
    • A loudspeaker is disclosed, comprising a driven body and a suspension for providing a restoring force to the driven body, the suspension having a cup geometry wherein its attachment point on the fixed portion of the loudspeaker is displaced along the axis of motion relative to its attachment point on the driven body and comprising a first concentric region that is extendible to allow reciprocating axial movement of the driven body, a second concentric region which extends transversely from the first region toward one of the attachment points, and a circumferential member affixed to the suspension at a location between the first and second concentric regions, the circumferential member being relatively stiff compared to the material forming the first and second concentric regions.
    • 公开了一种扬声器,包括从动体和用于向被驱动体提供恢复力的悬架,所述悬架具有杯形几何形状,其中扬声器的固定部分上的附接点相对于其附接物沿运动轴线移位 并且包括可延伸以允许从动体的往复轴向运动的第一同心区域,从第一区域横向延伸到附接点之一的第二同心区域,以及附接到悬架的圆周构件 在第一和第二同心区域之间的位置处,与形成第一和第二同心区域的材料相比,周向构件相对较硬。
    • 6. 发明申请
    • DOWNLINK TRANSMISSION IN A MULTIPLE-USER MULTIPLE-INPUT MULTIPLE-OUTPUT (
    • 多用户多输入多输出(“MU-MIMO”)无线通信系统中的下行链路传输
    • US20110176629A1
    • 2011-07-21
    • US12689223
    • 2010-01-18
    • Alireza BayestehAmin MobasherHua XuYongkang JiaYi YuJack Anthony SmithZhijun Sam CaiShiwei Gao
    • Alireza BayestehAmin MobasherHua XuYongkang JiaYi YuJack Anthony SmithZhijun Sam CaiShiwei Gao
    • H04B7/02H04L27/00
    • H04B7/0632H04B7/0417H04B7/0452H04B7/0639H04B7/0641
    • Information transmission in a multiple-input multiple-output (“MIMO”) wireless communication system is provided. In one embodiment, a method for transmitting information in a MIMO wireless communication system, comprising updating channel quality information (“CQI”) values of a plurality of wireless devices, wherein updating said CQI values consider the effects of interference from transmissions to those wireless devices associated with a pre-assigned companion codeword set; pairing said plurality of wireless devices using at least said CQI values, a precoding matrix index (“PMI”) value and said pre-assigned companion codeword set, wherein said pre-assigned companion codeword set, pre-assigned companion codewords associated with said pre-assigned companion codeword set and said PMI value are updated for each of said plurality of wireless devices; precoding the information for each of said plurality of wireless devices using said PMI value; and transmitting said precoded information to each of said plurality of wireless devices.
    • 提供了多输入多输出(“MIMO”)无线通信系统中的信息传输。 在一个实施例中,一种用于在MIMO无线通信系统中发送信息的方法,包括更新多个无线设备的信道质量信息(“CQI”)值,其中更新所述CQI值考虑来自传输到那些无线设备的干扰的影响 与预分配的伴随码字集相关联; 使用至少所述CQI值,预编码矩阵索引(“PMI”)值和所述预分配协同码字集合来配对所述多个无线设备,其中所述预分配伴随码字集合,与所述预先分配的伴随码字集相关联的预先分配的伴随码字 为所述多个无线设备中的每一个更新所分配的伴随码字集合和所述PMI值; 使用所述PMI值对所述多个无线设备中的每一个预先编码信息; 以及将所述预编码信息发送到所述多个无线设备中的每一个。
    • 8. 发明授权
    • Method of calculating signal propagation loss and creating a data base therefor
    • 计算信号传播损耗并创建数据库的方法
    • US06289203B1
    • 2001-09-11
    • US09030091
    • 1998-02-25
    • Jack Anthony SmithJohn Douglas ReedAdam Dewhirst
    • Jack Anthony SmithJohn Douglas ReedAdam Dewhirst
    • H04Q720
    • H04W16/18H04B17/3911H04W24/00H04W52/24
    • A method for determining a final propagation loss of a signal transmitted from a transmitter (302) and received at a receiver (303) located in a proximity of a road (340) in a predefined area (350) includes calculating an environmental factor based on a transportation network information associated with predefined area (350), and determining the final propagation loss based on the environmental factor. A method of creating a data base used for calculating the propagation loss includes providing a preliminary data base, calculating a road density constant based on a road profile of predefined area (350), calculating a road constant based on a road classification profile of road (340), calculating the environmental factor by summing the road density constant, and the road constant, and modifying the preliminary data base according to the environmental factor to produce the data base.
    • 一种用于确定从发射机(302)发送并在位于预定区域(350)中的道路(340)附近的接收机(303)处接收的信号的最终传播损耗的方法包括:基于 与预定区域(350)相关联的运输网络信息,以及基于环境因素确定最终传播损耗。 创建用于计算传播损失的数据库的方法包括提供初步数据库,基于预定义区域(350)的道路轮廓计算道路密度常数,基于道路的道路分类轮廓来计算道路常数( 340),通过将道路密度常数和道路常数相加来计算环境因子,并根据环境因素修改初步数据库以产生数据库。