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    • 1. 发明申请
    • Apparatus and method for canceling interference in a single antenna 1xEV-DV mobile station
    • 用于消除单个天线1xEV-DV移动台中的干扰的装置和方法
    • US20060045170A1
    • 2006-03-02
    • US10929842
    • 2004-08-30
    • Cornelius van RensburgLai TeeJoseph Cleveland
    • Cornelius van RensburgLai TeeJoseph Cleveland
    • H04B1/707
    • H04B1/7107H04J13/0048
    • A mobile station for canceling interference caused by a dominant interferer signal in a 1xEV-DV wireless network. The mobile station comprises an RF down-converter for outputting a down-converted signal, r(n); a first PN demodulator for multiplying the down-converted r(n) signal by a first PN code sequence to produce a first demodulated output signal; W Walsh code demodulators that multiply the first demodulated output signal by a selected set of W Walsh codes to produce W raw user signals; W subtractors that subtract a selected estimated interference signal from one of the W raw user signals to produce W estimated user signals; and a detector that outputs a detected user signal for each of the W estimated user signals that exceeds a first threshold value. The mobile station further comprises an interference estimator that receives W detected user signals from the first detector and outputs W estimated interference signals to the W subtractors.
    • 一种用于消除由1xEV-DV无线网络中的主要干扰信号引起的干扰的移动站。 移动站包括用于输出下变频信号r(n)的RF下变频器; 第一PN解调器,用于将下变频的r(n)信号乘以第一PN码序列以产生第一解调输出信号; W沃尔什码解调器,其将第一解调输出信号乘以选定的W Walsh码组,以产生W个原始用户信号; W个减法器,其从W个原始用户信号之一减去所选估计的干扰信号以产生W估计的用户信号; 以及检测器,其针对超过第一阈值的每个W个估计用户信号输出检测到的用户信号。 移动站还包括干扰估计器,其接收来自第一检测器的W个检测到的用户信号,并向W个减法器输出W个估计的干扰信号。
    • 3. 发明申请
    • System and method for providing SOHO BTS coverage based on angle of arrival of mobile station signals
    • 基于移动台信号到达角度提供SOHO BTS覆盖的系统和方法
    • US20080026763A1
    • 2008-01-31
    • US11492737
    • 2006-07-25
    • Cornelius van RensburgJoseph ClevelandNivi Thadasina
    • Cornelius van RensburgJoseph ClevelandNivi Thadasina
    • H04Q7/20
    • H04W16/28H04W16/16H04W16/32Y02D70/142Y02D70/146
    • Beamforming techniques to limit radiated power where there is the potential for interference with macro-cellular coverage or with adjacent mobile stations. Smart antenna beamforming techniques (including the use of angle of arrival information) are combined with access probe information to determine the direction for radiated power and the level of the needed transmitted power as well for the small office or home (SOHO) environment. The placement of RF power in the SOHO specific to where it is needed, minimizes radiating power in directions where it will cause interference with macrocell coverage. In addition, the beamforming techniques provide a base transceiver station with an economical method to quickly solve coverage issues internal to a SOHO, without introducing interference external to this coverage environment. In addition, there specific placement of the RF power where it is needed provides an increase in spectral efficiency of a deployed network.
    • 波束形成技术来限制辐射功率,其中存在对宏蜂窝覆盖的干扰或与相邻移动站的干扰。 将智能天线波束形成技术(包括使用到达角信息)与接入探测信息相结合,以确定辐射功率的方向和所需发射功率的水平以及小型办公室或家庭(SOHO)环境。 在SOHO中将RF功率放置在特定于需要的地方,可以最大程度地降低发生干扰宏小区覆盖的方向上的辐射功率。 另外,波束成形技术为基站收发机提供了一种经济的方法来快速解决SOHO内部的覆盖问题,而不会引起该覆盖环境外部的干扰。 此外,在需要的地方,RF功率的具体布置提供了部署网络的频谱效率的提高。
    • 8. 发明申请
    • Apparatus and method for managing SOHO BTS interference using antenna beam coverage based on pilot strength measurement messages
    • 基于导频强度测量消息,使用天线波束覆盖来管理SOHO BTS干扰的装置和方法
    • US20070238414A1
    • 2007-10-11
    • US11391108
    • 2006-03-28
    • Joseph ClevelandNivi ThadasinaJohn Jubin
    • Joseph ClevelandNivi ThadasinaJohn Jubin
    • H04B1/00H04B15/00
    • H04W52/243
    • A small office/home office base transceiver station (SOHO BTS) server capable of managing interference by correlating pilot strength measurements sent by mobile devices and directing the attenuation settings for each transmit path. An array of antennas coupled to an array of transmit paths are selectively activated one at a time. When a transmit path is activated, the SOHO BTS server sets the associated variable attenuator to its maximum level. The SOHO BTS server detects whether a radio environment report or and a pilot strength measurement message (PSMM) containing information about a mobile station's pilot strength is present. When the pilot strength is greater than a predetermined value, the SOHO BTS server increases the setting on the attenuator. Otherwise, the SOHO BTS server decreases the attenuator setting until such pilot strength information is available or if the lowest attenuator setting has been set. The other transmit paths are also tested accordingly.
    • 能够通过将由移动设备发送的导频强度测量相关并且指导每个发射路径的衰减设置来管理干扰的小型办公室/家庭办公室基站收发台(SOHO BTS)服务器。 耦合到发射路径阵列的天线阵列被一次一个地选择性地激活。 当发送路径被激活时,SOHO BTS服务器将相关联的可变衰减器设置为其最大电平。 SOHO BTS服务器检测是否存在包含关于移动台的导频强度的信息的无线电环境报告或导频强度测量消息(PSMM)。 当导频强度大于预定值时,SOHO BTS服务器增加衰减器上的设置。 否则,SOHO BTS服务器减少衰减器设置,直到这种导频强度信息可用或者如果最低衰减器设置已经被设置。 其他发送路径也进行了相应的测试。
    • 9. 发明授权
    • Practical M-ary demodulator and method of operation for use in a CDMA wireless network base station
    • CDMA无线网络基站中的实际M-ary解调器及操作方法
    • US07095810B2
    • 2006-08-22
    • US10038873
    • 2001-12-31
    • Joseph ClevelandAdnan Kavak
    • Joseph ClevelandAdnan Kavak
    • H03D1/00
    • H04B1/707H04B2001/70935
    • A demodulator for demodulating S orthogonal modulation codes, each code comprising M binary bits representing an N-bit data symbol, where M=2N. The demodulator comprises a Logic 00 detector for comparing pairs of binary bits to 00 and outputting [+1,+1] if a match occurs or [−1,−1] otherwise; S accumulators; and a Logic 00 switch array comprising S switches, where a Kth switch couples an output of the Logic 00 detector to a first input of a Kth S accumulator. The demodulator also comprises a storage array for storing S code masks, each code mask comprising M/2 code mask bits and each M/2 code mask bit associated with a corresponding sequential pair of M binary bits; and control circuitry for synchronously applying the M/2 code mask bits in a Kth code mask as a control signal to the Kth switch in the Logic 00 switch array.
    • 一种用于解调S个正交调制码的解调器,每个代码包括表示N位数据符号的M个二进制位,其中M = 2 N。 解调器包括一个逻辑00检测器,用于将二进制位对比较为00,并且如果发生匹配则输出[+ 1,+ 1],否则为[-1,-1] S蓄能器 以及包括S个开关的逻辑00开关阵列,其中第K个开关将逻辑00检测器的输出耦合到第K个S累加器的第一个输入。 解调器还包括用于存储S码掩码的存储阵列,每个码掩码包括M / 2码屏蔽位和与对应的M个二进制比特序列对相关联的每个M / 2码掩码位; 以及用于将第K个码掩码中的M / 2码屏蔽位同步施加到逻辑00开关阵列中的第K个开关的控制信号的控制电路。