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. 发明授权

US5533014A Non-continuous transmission for seamless handover in DS-CDMA systems 失效
标题翻译：用于DS-CDMA系统中无缝切换的非连续传输
公开(公告)号：US5533014A
公开(公告)日：1996-07-02
申请号：US431458
申请日：1995-05-01
申请人： Per H. A. Willars , Olof E. Grimlund , Lars-Magnus Ewerbring
发明人： Per H. A. Willars , Olof E. Grimlund , Lars-Magnus Ewerbring
IPC分类号： H04J13/04 , H04B7/005 , H04B7/26 , H04L1/00 , H04W28/06 , H04W36/18 , H04W52/26 , H04W52/28 , H04W52/44 , H04J13/00
CPC分类号： H04W52/265 , H04B7/2628 , H04W36/18 , H04W52/267 , H04W52/282 , H04W52/287 , H04W52/288 , H04W28/06 , H04W52/44
摘要： Introduction of discontinuous transmission in CDMA communications techniques is achieved by using a lower spreading ratio, whereby the spread information only fills an information part of a frame in a compressed mode, leaving an idle part of the frame in which to perform other functions, such as evaluation of other frequencies and execution of seamless handover between frequencies.
摘要翻译：通过使用较低的扩展率来实现CDMA通信技术中的不连续传输的引入，由此扩展信息仅以压缩模式填充帧的信息部分，留下执行其他功能的帧的空闲部分，例如评估其他频率和执行频率之间的无缝切换。

2. 发明授权

US5544156A Direct sequence CDMA coherent uplink detector 失效
标题翻译：直接序列CDMA相干上行检测器
公开(公告)号：US5544156A
公开(公告)日：1996-08-06
申请号：US235527
申请日：1994-04-29
申请人： Paul M. Teder , Lars-Magnus Ewerbring , Lars G. Brismark
发明人： Paul M. Teder , Lars-Magnus Ewerbring , Lars G. Brismark
IPC分类号： H04B1/26 , H04B1/707 , H04B7/005 , H04B7/08 , H04B7/26 , H04L1/00 , H04L25/02 , H04B7/216 , H04L27/22
CPC分类号： H04B1/707 , H04L1/0002 , H04L1/0025 , H04L25/0214 , H04B2201/70703 , Y02B60/31
摘要： A system and method for coherently demodulating an uplink signal in a multirate, CDMA system. By first demodulating information in a control channel which relates to the data rate of a data field in a frame of the data channel of the received signal, phase information can be derived so as to generate a reference for coherent demodulation.
摘要翻译：一种用于在多速率CDMA系统中相干解调上行链路信号的系统和方法。通过首先解调与接收信号的数据信道的帧中的数据字段的数据速率有关的控制信道中的信息，可以导出相位信息，以便产生用于相干解调的参考。

3. 发明授权

US5946345A Apparatus and a method for telecommunication system 失效
标题翻译：电信系统的装置和方法
公开(公告)号：US5946345A
公开(公告)日：1999-08-31
申请号：US911399
申请日：1997-08-14
申请人： Jonas Karlsson , Paul Teder , Lars-Magnus Ewerbring
发明人： Jonas Karlsson , Paul Teder , Lars-Magnus Ewerbring
IPC分类号： H04B1/707 , H04B1/69
CPC分类号： H04B1/707
摘要： A receiver device (703) downspreads signals from a band spreading signal, which generates downspread symbol sequences (803). A vector generator (704) generate symbol vectors (805) which include a symbol from each downspread symbol sequence (803). An auxiliary receiver (705) detects symbol vectors (805) in a first window (809) with the length of one symbol time. The auxiliary receiver (705) generates provisional estimates of the symbol vectors (805) with the help of a device with a first window algorithm (811). A delaying module (706) delays the symbol vectors (805) from the vector generator (704) by one symbol time before they reach a main receiver (707). The main receiver (707) detects in a second window (806) the symbol vectors (805) with the length of one symbol time. The main receiver (707) uses a device with a second window algorithm (808) in order to estimate the received symbol vectors (805) with reference taken to the previously estimated symbol vectors in the main receiver (705) and the provisional estimates of the symbol vectors (805) from the auxiliary receiver (705). A component generator (710) divides up the estimated symbol vectors (807) from the main receiver into separate components (815).
摘要翻译：接收机设备（703）从扩频信号中扩展信号，该频带扩展信号产生下扩频符号序列（803）。向量生成器（704）生成包括来自每个向下扩展符号序列（803）的符号的符号向量（805）。辅助接收机（705）以一个符号时间的长度在第一窗口（809）中检测符号向量（805）。辅助接收器（705）借助具有第一窗口算法（811）的设备产生符号向量（805）的临时估计。延迟模块（706）在向量生成器（704）到达主接收器（707）之前延迟一个符号时间的符号向量（805）。主接收机（707）在第二窗口（806）中检测具有一个符号时间长度的符号向量（805）。主接收机（707）使用具有第二窗口算法（808）的设备，以便参考主接收机（705）中的先前估计的符号向量来估计接收的符号向量（805），并且来自辅助接收器（705）的符号向量（805）。分量生成器（710）将估计的符号向量（807）从主接收机分成单独的分量（815）。

4. 发明授权

US5883899A Code-rate increased compressed mode DS-CDMA systems and methods 失效
标题翻译：码率增加的压缩模式DS-CDMA系统和方法
公开(公告)号：US5883899A
公开(公告)日：1999-03-16
申请号：US636646
申请日：1996-04-23
申请人： Erik Dahlman , Per Hans P. Willars , Olof E. Grimlund , Lars-Magnus Ewerbring
发明人： Erik Dahlman , Per Hans P. Willars , Olof E. Grimlund , Lars-Magnus Ewerbring
IPC分类号： H04B1/707 , H04B7/005 , H04B7/26 , H04J13/00 , H04J13/12 , H04J13/16 , H04L1/00 , H04W36/18 , H04W36/30 , H04W36/36 , H04W48/12 , H04W52/28 , H04W52/44 , H04J3/16 , H04B7/216 , H04J3/06 , H04J3/22
CPC分类号： H04W48/12 , H04B1/707 , H04B7/2618 , H04B7/264 , H04J13/0029 , H04J13/12 , H04J13/16 , H04L1/0059 , H04W52/282 , H04W52/287 , H04W52/288 , H04W36/18 , H04W36/30 , H04W36/36 , H04W52/44
摘要： Introduction of discontinuous transmission in CDMA communications techniques is achieved by using selectively puncturing coded output of a convolutional encoder. By temporarily increasing the coding rate during a frame, information only fills an information part of a frame in a compressed mode, leaving an idle part of the frame in which to perform other functions, such as evaluation of other frequencies for use in handover between frequencies.
摘要翻译：通过使用卷积编码器的选择性打孔编码输出来实现CDMA通信技术中的不连续传输的引入。通过在帧内临时增加编码率，信息仅以压缩模式填充帧的信息部分，留下执行其他功能的帧的空闲部分，例如用于频率之间切换的其他频率的评估。

5. 发明授权

US5896368A Multi-code compressed mode DS-CDMA systems and methods 失效
标题翻译：多码压缩模式DS-CDMA系统和方法
公开(公告)号：US5896368A
公开(公告)日：1999-04-20
申请号：US636648
申请日：1996-04-23
申请人： Erik Dahlman , Per Hans P. Willars , Olof E. Grimlund , Lars-Magnus Ewerbring
发明人： Erik Dahlman , Per Hans P. Willars , Olof E. Grimlund , Lars-Magnus Ewerbring
IPC分类号： H04B1/707 , H04B7/005 , H04B7/26 , H04J13/00 , H04J13/10 , H04J13/16 , H04L1/00 , H04W36/18 , H04W36/30 , H04W36/36 , H04W48/12 , H04W52/28 , H04W52/44 , H04J13/04
CPC分类号： H04W52/282 , H04B1/707 , H04B7/2618 , H04J13/0029 , H04J13/0077 , H04J13/10 , H04J13/16 , H04L1/0059 , H04W48/12 , H04W52/287 , H04W52/288 , H04W36/18 , H04W36/30 , H04W36/36 , H04W52/44
摘要： Introduction of discontinuous transmission in CDMA communications techniques is achieved by selectively using additional spreading codes for spreading a frame of data. By dividing a frame into two or more portions and spreading each portion with a different spreading code, the frame can be transmitted in a compressed mode wherein the information is transmitted during a portion of the frame period, leaving an idle part of the frame in which to perform other functions, such as evaluation of other frequencies for use in handover between frequencies.
摘要翻译：在CDMA通信技术中引入不连续传输是通过选择性地使用用于扩展数据帧的附加扩展码来实现的。通过将帧划分成两个或更多个部分并且以不同的扩展码扩展每个部分，该帧可以以压缩模式发送，其中信息在帧周期的一部分期间被发送，留下其中的帧的空闲部分执行其他功能，例如评估用于频率之间切换的其他频率。

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