专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明申请

WO2009093233A2 BEAMFORMING IN MIMO COMMUNICATION SYSTEMS 审中-公开
标题翻译： MIMO通信系统中的波束形成
公开(公告)号：WO2009093233A2
公开(公告)日：2009-07-30
申请号：PCT/IL2009/000020
申请日：2009-01-06
申请人： PROVIGENT LTD. , RAVID, Rafi , MONTEKYO, Zohar , AHARONY, Ahikam
发明人： RAVID, Rafi , MONTEKYO, Zohar , AHARONY, Ahikam
IPC分类号： H04B1/00 , H03D3/24
CPC分类号： H04B7/063 , H04B7/0617 , H04B7/0857
摘要： A communication terminal (24A) includes first and second transmitters (28, 32A, 32B), which are coupled to produce respective first and second Radio Frequency (RF) signals that are phase-shifted with respect to one another by a beamforming phase offset, and to transmit the RF signals toward a remote communication terminal (24B). The terminal includes a reception subsystem (32A, 32B, 52) including first and second receivers (32A, 32B) and a phase correction unit (52). The first and second receivers are respectively coupled to receive third and fourth RF signals from the remote communication terminal. The phase correction unit is coupled to produce, responsively to the third and fourth RF signals, a phase correction for correcting an error component in the beamforming phase offset.
摘要翻译：通信终端（24A）包括第一和第二发射机（28,32A，32B），其被耦合以产生通过波束形成相位偏移相对于彼此相移的相应的第一和第二射频（RF）信号，并且向远程通信终端（24B）发送RF信号。终端包括包括第一和第二接收器（32A，32B）和相位校正单元（52）的接收子系统（32A，32B，52）。第一和第二接收机分别被耦合以从远程通信终端接收第三和第四RF信号。相位校正单元被耦合以响应于第三和第四RF信号产生用于校正波束形成相位偏移中的误差分量的相位校正。

2. 发明申请

WO2009093232A2 MULTI-MODE WIRELESS COMMUNICATION LINK 审中-公开
标题翻译：多模式无线通信链路
公开(公告)号：WO2009093232A2
公开(公告)日：2009-07-30
申请号：PCT/IL2008/001620
申请日：2008-12-15
申请人： PROVIGENT LTD. , AHARONY, Ahikam , RAVID, Rafi , FRIEDMANN, Jonathan
发明人： AHARONY, Ahikam , RAVID, Rafi , FRIEDMANN, Jonathan
IPC分类号： H03C7/02 , H04B1/02 , H04B7/02
CPC分类号： H04B7/0871 , H04B7/0617 , H04B7/0619 , H04B7/0669 , H04B7/0689 , H04B7/0693 , H04B7/0697 , H04B7/0877 , H04B7/10
摘要： A communication system (20) includes first and second transmitters (36A, 36B), which are coupled to transmit respective first and second Radio Frequency (RF) signals carrying first and second data over a wireless communication channel. The transmitters are coupled to select an operational mode from a group of operational modes and to operate in the selected operational mode. The group of the operational modes includes at least two of a protection mode, wherein the second transmitter serves as backup to the first transmitter, a spatial multiplexing mode, in which the first data is different from the second data and the first and second transmitters transmit simultaneously, and a beam-forming mode, in which the first data is identical to the second data, the second RF signal includes a phase-shifted replica of the first RF signal, and the first and second transmitters transmit simultaneously.
摘要翻译：通信系统（20）包括第一和第二发射机（36A，36B），其被耦合以通过无线通信信道发送携带第一和第二数据的相应的第一和第二射频（RF）信号。发射机被耦合以从一组操作模式中选择操作模式并且以所选择的操作模式操作。该组操作模式包括保护模式中的至少两个，其中第二发射机用作第一发射机的备份，空间复用模式，其中第一数据不同于第二数据，第一和第二发射机发送同时和波束形成模式，其中第一数据与第二数据相同，第二RF信号包括第一RF信号的相移副本，并且第一和第二发射机同时发射。

3. 发明申请

WO2011114242A1 REDUCTION OF DIGITAL-TO-ANALOG CONVERTER DISTORTION USING CONSTELLATION ROTATION 审中-公开
标题翻译：使用协调旋转减少数字到模拟转换器的失真
公开(公告)号：WO2011114242A1
公开(公告)日：2011-09-22
申请号：PCT/IB2011/050592
申请日：2011-02-13
申请人： PROVIGENT LTD , FRIEDMANN, Jonathan , RAVID, Rafi
发明人： FRIEDMANN, Jonathan , RAVID, Rafi
IPC分类号： H03M1/66
CPC分类号： H03M1/0614 , H03M1/66 , H04L27/368
摘要： A method for signal conversion includes generating a complex digital signal, which includes digital In-phase (I) and Quadrature (Q) components, for conversion into respective analog I and Q components by first and second Digital-to-Analog Converters (DACs - 36A, 36B). A distortion generated by the DACS in the analog I and Q components is reduced by applying a phase rotation to the complex digital signal. After applying the phase rotation, the digital I and Q components of the complex digital signal are converted into the respective analog I and Q components using the first and second DACs.
摘要翻译：一种用于信号转换的方法包括生成包括数字同相（I）和正交（Q）分量的复数数字信号，用于由第一和第二数模转换器（DAC）转换成相应的模拟I和Q分量 36A，36B）。 DACS在模拟I和Q分量中产生的失真通过对复数数字信号施加相位旋转来减小。在施加相位旋转之后，使用第一和第二DAC将复数数字信号的数字I和Q分量转换成相应的模拟I和Q分量。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式