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

WO2002089313A2 FREQUENCY CONVERSION OF SIGNALS 审中-公开
标题翻译：信号频率转换
公开(公告)号：WO2002089313A2
公开(公告)日：2002-11-07
申请号：PCT/GB2002/001973
申请日：2002-04-30
申请人： WIRELESS SYSTEMS INTERNATIONAL LIMITED , KENINGTON, Peter , COPE, Mark , MEADE, Steven , ROBERTSON, Mark
发明人： KENINGTON, Peter , COPE, Mark , MEADE, Steven , ROBERTSON, Mark
IPC分类号： H03D7/00
CPC分类号： H03D7/161
摘要： When using a DSP to digitally predistort the RF input to a power amplifier, it is necessary to downconvert the frequency the of the input signal to enable it to be processed by the DSP. The predistored amplifier input signal produced by the DSP is then upconverted to its original frequency and supplied to the power amplifier. The downconverter and the upconverter processes each comprise a number of mixers that operate in series upon the amplifier input signal. Each of the mixers mixes a respective reference signal into the amplifier input signal to change the latter's frequency. All of the reference signals are derived from the same reference oscillator. If the total number of mixers that perform high-sided mixing is constrained to be even, then frequency errors associated with the downconversion and subsequent upconversion are eliminated.
摘要翻译：当使用DSP对功率放大器的RF输入进行数字预失真时，需要对输入信号的频率进行下变频，以使其能够被DSP处理。然后由DSP产生的预先放大的输入信号上变频到其原始频率并提供给功率放大器。下变频器和上变频器过程各自包括多个混合器，其在放大器输入信号上串联操作。每个混频器将相应的参考信号混合到放大器输入信号中以改变其频率。所有的参考信号都是从相同的参考振荡器得到的。如果执行高侧混合的混合器的总数被限制为均匀，则与下转换和随后的上转换相关的频率误差被消除。

2. 发明申请

WO2002103892A2 METHODS AND APPARATUS FOR SIGNAL DISTORTION CORRECTION 审中-公开
标题翻译：信号失真校正的方法和装置
公开(公告)号：WO2002103892A2
公开(公告)日：2002-12-27
申请号：PCT/GB2002/002767
申请日：2002-06-12
申请人： WIRELESS SYSTEMS INTERNATIONAL LIMITED , COPE, Mark , KENINGTON, Peter , MEADE, Steven, Anthony
发明人： COPE, Mark , KENINGTON, Peter , MEADE, Steven, Anthony
IPC分类号： H03F1/00
CPC分类号： H03F1/3247 , H03F1/3294 , H03F2201/3224
摘要： The digital predistorter multiplies the input signal with coefficients obtained from look-up tables. To reduce the amount of storage required, the coefficients are stored in partial form and are either reconstituted by addition of a constant (44, Figure 3b) prior to application to the input signal or the retrieved coefficients are applied directly to the input signal and the resulting modified signal is then combined with the original input signal (34, Figure 2a).
摘要翻译：数字预失真器将输入信号与从查找表获得的系数相乘。为了减少所需的存储量，系数以部分形式存储，并且在应用于输入信号之前通过添加常数（44，图3b）来重构，或者将检索到的系数直接应用于输入信号，并且然后将所产生的经修改的信号与原始输入信号（图2a中的34）组合。

3. 发明申请

WO2002103899A2 SIGNAL PROCESSING 审中-公开
标题翻译：信号处理
公开(公告)号：WO2002103899A2
公开(公告)日：2002-12-27
申请号：PCT/GB2002/002684
申请日：2002-06-11
申请人： WIRELESS SYSTEMS INTERNATIONAL LIMITED , MEADE, Steven, Anthony , BISHOP, John , KENINGTON, Peter
发明人： MEADE, Steven, Anthony , BISHOP, John , KENINGTON, Peter
IPC分类号： H03G
CPC分类号： H03F1/3223 , H03F1/3241
摘要： The input signal to a digital predistorter (14, Figure 1) is interpolated (28) and frequency converted (36 to 44) to condition it for predistortion. Similar conditioning can be applied to signals in a feed-forward lineariser.
摘要翻译：将数字预失真器（14，图1）的输入信号内插（28）并进行频率转换（36至44）以使其预失真。类似的调理可以应用于前馈线性化仪中的信号。

4. 发明申请

WO2002089336A2 ANALOGUE AND DIGITAL SIGNAL PROCESSING 审中-公开
标题翻译：模拟和数字信号处理
公开(公告)号：WO2002089336A2
公开(公告)日：2002-11-07
申请号：PCT/GB2002/001974
申请日：2002-04-30
申请人： WIRELESS SYSTEMS INTERNATIONAL LIMITED , KENINGTON, Peter , COPE, Mark , KNIGHTS, Philip , FARQUHAR, Graham
发明人： KENINGTON, Peter , COPE, Mark , KNIGHTS, Philip , FARQUHAR, Graham
IPC分类号： H04B
CPC分类号： H03F1/3247 , H03F1/3241 , H04B1/0475 , H04B1/28 , H04B2001/0425
摘要： A power amplifier (PA) in linearised by predistorting its input signal using a digital card. The output of the digital card is upconverted to RF and supplied to the amplifier. In order to be predistorted, the amplifier input signal is downconverted if it is provided at RF. The local oscillator signals used in the frequency conversion of the amplifier input signal and the clock signals used in the digital card are derived from the same master oscillator so that they are coherent. This coherency is beneficial in that, for example, it reduces the number and spread of spurious mixing products created in the frequency conversion process(es).
摘要翻译：功率放大器（PA），通过使用数字卡预失真其输入信号进行线性化。数字卡的输出上变频到RF并提供给放大器。为了进行预失真，放大器输入信号如果在RF处被提供则被下变频。在放大器输入信号的频率转换中使用的本地振荡器信号和数字卡中使用的时钟信号来自相同的主振荡器，使得它们是相干的。这种一致性是有益的，因为例如，它减少了在变频过程中产生的混合产物的数量和扩展。

5. 发明申请

WO2002103892A3 METHODS AND APPARATUS FOR SIGNAL DISTORTION CORRECTION 审中-公开
公开(公告)号：WO2002103892A3
公开(公告)日：2002-12-27
申请号：PCT/GB2002/002767
申请日：2002-06-12
申请人： ANDREW CORPORATION , COPE, Mark , KENINGTON, Peter , MEADE, Steven, Anthony
发明人： COPE, Mark , KENINGTON, Peter , MEADE, Steven, Anthony
IPC分类号： H03F1/32
摘要： The digital predistorter multiplies the input signal with coefficients obtained from look-up tables. To reduce the amount of storage required, the coefficients are stored in partial form and are either reconstituted by addition of a constant (44) prior to application to the input signal or the retrieved coefficients are applied directly to the input signal and the resulting modified signal is then combined with the original input signal (34).

6. 发明申请

WO2002103899A3 SIGNAL PROCESSING 审中-公开
公开(公告)号：WO2002103899A3
公开(公告)日：2002-12-27
申请号：PCT/GB2002/002684
申请日：2002-06-11
申请人： ANDREW CORPORATION , MEADE, Steven, Anthony , BISHOP, John , KENINGTON, Peter
发明人： MEADE, Steven, Anthony , BISHOP, John , KENINGTON, Peter
IPC分类号： H03F1/32
摘要： The input signal to a digital predistorter (14) is interpolated (28) and frequency converted (36 to 44) to condition it for predistortion. Similar conditioning can be applied to signals in a feed-forward lineariser.

7. 发明申请

WO2002089318A3 SIGNAL PROCESSING APPARATUS 审中-公开
公开(公告)号：WO2002089318A3
公开(公告)日：2002-11-07
申请号：PCT/GB2002/001969
申请日：2002-04-30
申请人： ANDREW CORPORATION , KENINGTON, Peter , MEADE, Steven , BISHOP, John
发明人： KENINGTON, Peter , MEADE, Steven , BISHOP, John
IPC分类号： H03F1/32
摘要： Where a DSP is used to predistort the input to a radio frequency power amplifier (RF PA) in the digital domain, then the DSP can also be used to perform a mathematical clipping operation on the input signal. This means that unwanted distortion is not introduced via the clipping process.

8. 发明申请

WO2002089336A3 ANALOGUE AND DIGITAL SIGNAL PROCESSING 审中-公开
公开(公告)号：WO2002089336A3
公开(公告)日：2002-11-07
申请号：PCT/GB2002/001974
申请日：2002-04-30
申请人： ANDREW CORPORATION , KENINGTON, Peter , COPE, Mark , KNIGHTS, Philip , FARQUHAR, Graham
发明人： KENINGTON, Peter , COPE, Mark , KNIGHTS, Philip , FARQUHAR, Graham
IPC分类号： H03D7/16
摘要： A power amplifier (PA) in linearised by predistorting its input signal using a digital card. The output of the digital card is upconverted to RF and supplied to the amplifier. In order to be predistorted, the amplifier input signal is downconverted if it is provided at RF. The local oscillator signals used in the frequency conversion of the amplifier input signal and the clock signals used in the digital card are derived from the same master oscillator so that they are coherent. This coherency is beneficial in that, for example, it reduces the number and spread of spurious mixing products created in the frequency conversion process(es).

9. 发明申请

WO2011157519A1 MOBILE COMMUNICATIONS NETWORK WITH DISTRIBUTED PROCESSING RESOURCES 审中-公开
标题翻译：具有分布式处理资源的移动通信网络
公开(公告)号：WO2011157519A1
公开(公告)日：2011-12-22
申请号：PCT/EP2011/058534
申请日：2011-05-25
申请人： UBIDYNE, INC. , KENINGTON, Peter
发明人： KENINGTON, Peter
IPC分类号： H04W88/08
CPC分类号： H04W88/085
摘要： A mobile communications network is disclosed which comprises a plurality of radio heads, a cloud processing architecture, and a plurality of radio head links. The plurality of radio heads are for transceiving radio signals and for converting the radio signals between baseband representations of the radio signals and radio frequency representation of the radio signals. The cloud processing architecture is for processing the baseband representations of the radio signals. The cloud processing architecture is ad hoc shareable on demand between different ones of the plurality of radio heads. The plurality of radio head links is provided between the plurality of radio heads and the cloud processing architecture. A corresponding method for processing radio signals for a mobile communications network and corresponding computer program products are also disclosed.
摘要翻译：公开了一种移动通信网络，其包括多个无线电头，云处理架构和多个无线电头链路。多个无线电头用于收发无线电信号，并用于在无线电信号的基带表示和无线电信号的射频表示之间转换无线电信号。云处理架构用于处理无线电信号的基带表示。云处理架构可以根据需要在多个无线电头中不同的情况下进行分配。多个无线电头链路被提供在多个无线电头和云处理架构之间。还公开了用于处理移动通信网络和对应的计算机程序产品的无线电信号的相应方法。

10. 发明申请

WO2010115699A3 RADIO SYSTEM AND METHOD FOR RELAYING RADIO SIGNALS WITH A POWER CALIBRATION OF TRANSMIT RADIO SIGNALS 审中-公开
公开(公告)号：WO2010115699A3
公开(公告)日：2010-10-14
申请号：PCT/EP2010/053694
申请日：2010-03-22
申请人： UBIDYNE INC. , KENINGTON, Peter
发明人： KENINGTON, Peter
IPC分类号： H04B17/00 , H01Q3/26 , H04W88/08
摘要： The present invention provides a radio system (1) and a method (800) for relaying radio signals, providing a power calibration of transmit radio signals. With the radio system (1) and the method (800) no dedicated calibration signal generator is required for providing the power calibration of the transmit radio signals. The radio system (1) comprises at least one transmit path, a calibration unit (200) at the least one link (15-1, 15-2,...,15-N) and a power sensor (500). A selected one of coupled transmit signals (90-1, 90-2,..., 90-N) is forwarded to a power sensor (500, 500b) for measuring a power level of a portion (95) of the selected one of the coupled transmit signals (90-1, 90-2,..., 90-N), wherein the calibration unit (200) is adapted to update a power rating of the at least one transmit path (70-1, 70-2,..., 70-N) in response to the transmit power level of the selected one of the coupled transmit signals (90-1, 90-2,..., 90-N).

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