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101. 发明授权

US06822999B1 High-speed cell searching apparatus and method for communication system 有权
标题翻译：高速小区搜索装置及通信系统方法
公开(公告)号：US06822999B1
公开(公告)日：2004-11-23
申请号：US09708453
申请日：2000-11-09
申请人： Byeong Gi Lee , Byoung Hoon Kim
发明人： Byeong Gi Lee , Byoung Hoon Kim
IPC分类号： H04B1707
CPC分类号： H04B1/7075
摘要： A high-speed cell searching apparatus and method for a communication system. The apparatus uses a distributed sample acquisition method and a correlation-assistant distributed sample acquisition method to achieve a high-speed acquisition of long-period scrambling sequences used in a direct sequence code division multiple access (DS/CDMA) cellular system even in a very inferior channel environment. The apparatus further uses a comparison-correction-based synchronization method and a state symbol correlation method according to the DSA technique in the DS/CDMA cellular system.
摘要翻译：一种用于通信系统的高速小区搜索装置和方法。该装置使用分布式样本采集方法和相关辅助分布样本采集方法来实现在直接序列码分多址（DS / CDMA）蜂窝系统中使用的长周期加扰序列的高速采集，即使在非常劣势渠道环境。该装置还在DS / CDMA蜂窝系统中使用根据DSA技术的基于比较校正的同步方法和状态符号相关方法。

102. 发明授权

US06807222B1 Receiving spread spectrum signals with narrowband interference 有权
标题翻译：接收窄带干扰的扩频信号
公开(公告)号：US06807222B1
公开(公告)日：2004-10-19
申请号：US09582717
申请日：2000-06-30
申请人： Terence Widdowson
发明人： Terence Widdowson
IPC分类号： H04B1707
CPC分类号： H04B1/7107 , H04B1/707 , H04B1/71
摘要： A receiver receives spread spectrum signals which include unwanted narrowband signals, for example, radio signals which comprise a mixture of signals from signal sources using the Group Special Mobile (GSM) ETSI standard coding and from signal sources using Code Division Multiple Access (CDMA) coding. Both despreading of the spread spectrum signal and attenuating of predetermined frequencies (corresponding to the narrowband signal) of the spread spectrum signal are performed prior to downconverting. In another approach to decoding a spread spectrum signal in which an unwanted narrowband signal has been coded using a coding scheme with error correction capabilities, the narrowband signal is decoded, regenerated and subtracted prior to despreading of the spread spectrum signal.
摘要翻译：接收机接收包括不想要的窄带信号的扩频信号，例如包括使用组特殊移动（GSM）ETSI标准编码的信号源的信号混合的无线电信号，以及使用码分多址（CDMA）编码的信号源。扩展频谱信号的解扩和扩频信号的预定频率（对应于窄带信号）的衰减在下变频之前进行。在使用具有纠错能力的编码方案对不想要的窄带信号进行编码的扩展频谱信号进行解码的另一种方法中，在扩展频谱信号的解扩之前对窄带信号进行解码，再生和减法。

103. 发明授权

US06804289B2 Wireless communication system and method of controlling same 失效
标题翻译：无线通信系统及其控制方法
公开(公告)号：US06804289B2
公开(公告)日：2004-10-12
申请号：US09785174
申请日：2001-02-20
申请人： Takumi Takahashi
发明人： Takumi Takahashi
IPC分类号： H04B1707
CPC分类号： H04W84/10 , H04B2001/71365 , H04B2001/7154 , H04M1/725 , H04M1/72505 , H04M1/72513 , H04M1/72519 , H04M1/7253 , H04M1/733
摘要： A wireless communication system has a plurality of wireless communication devices capable of communicating with one another directly without the intervention of another device, and a wireless control unit which accommodates these wireless communication devices. The wireless control unit manages the direct communication among the wireless communication devices as well as communication between the wireless control unit and the wireless communication devices.
摘要翻译：无线通信系统具有能够彼此直接通信的多个无线通信设备，而不需要另一设备的干预;以及容纳这些无线通信设备的无线控制单元。无线控制单元管理无线通信设备之间的直接通信以及无线控制单元与无线通信设备之间的通信。

104. 发明授权

US06792033B1 Array antenna reception apparatus 有权
标题翻译：阵列天线接收装置
公开(公告)号：US06792033B1
公开(公告)日：2004-09-14
申请号：US09388509
申请日：1999-09-02
申请人： Yasushi Maruta , Shousei Yoshida
发明人： Yasushi Maruta , Shousei Yoshida
IPC分类号： H04B1707
CPC分类号： H01Q3/2605 , H01Q1/246
摘要： An array antenna reception apparatus includes an array antenna, K adaptive receivers, and demodulated signal synthesizer. The array antenna has M (M is an integer of 1 or more) antenna elements linearly laid out on each side (sector) of a polygon having K (K is an integer of 3 or more) sides. Each adaptive receiver receives reception signals from the M antenna elements for a corresponding sector, independently forms a directional pattern having a gain in a desired signal direction for the sector, receives a desired signal, and suppresses an interference signal. The demodulated signal synthesizer receives K demodulated signals as outputs from the K adaptive receivers, weights and synthesizes the signals, and outputs a demodulated signal for a user.
摘要翻译：阵列天线接收装置包括阵列天线，K个自适应接收机和解调信号合成器。阵列天线具有线性地布置在K（K是3以上的整数）的多边形的每一侧（扇区）上的M（M为1以上的整数）天线元件。每个自适应接收机从相应扇区的M个天线元件接收接收信号，独立地形成具有针对扇区的期望信号方向增益的方向图，接收期望信号，并抑制干扰信号。解调信号合成器接收来自K个自适应接收机的K个解调信号作为输出，加权并合成信号，并输出用户的解调信号。

105. 发明授权

US06771689B2 Transmit diversity and reception equalization for radio links 有权
标题翻译：发射无线电链路的分集和接收均衡
公开(公告)号：US06771689B2
公开(公告)日：2004-08-03
申请号：US09839127
申请日：2001-04-23
申请人： Max Aaron Solondz
发明人： Max Aaron Solondz
IPC分类号： H04B1707
CPC分类号： H04B7/0671 , H04B7/10 , Y02D70/1222 , Y02D70/442 , Y02D70/444
摘要： In a mobile communication system, independent versions of a signal are transmitted over plural antennas. The antennas are either spatially separated or orthogonally polarized with respect to each other so that the independent versions of the signal are not subjected to correlated fading. Each independent version of the signal is transmitted from a respective antenna a fixed delay after transmission of a previous version of a signal from a different antenna. The fixed delay is at least one information bit of the signal. Received versions of the signal are equalized in an equalizer or RAKE architecture to provide a composite signal. The equalizer has respective sets of equalizer taps that are separated from adjacent sets of equalizer taps by the fixed delay. The RAKE architecture has respective sets of RAKE fingers that are separated from adjacent sets of RAKE fingers by the fixed delay.
摘要翻译：在移动通信系统中，通过多个天线发送信号的独立版本。天线彼此空间分离或正交极化，使得信号的独立版本不受相关衰落的影响。在从不同天线发送信号的先前版本之后，每个独立版本的信号从相应天线发送固定的延迟。固定的延迟是信号的至少一个信息位。信号的接收版本在均衡器或RAKE架构中被均衡以提供复合信号。均衡器具有相应的均衡器抽头组，其相邻的均衡器抽头组以固定的延迟分开。 RAKE架构具有各自的RAKE指状物组，其相对于相邻的RAKE手指组分离固定的延迟。

106. 发明授权

US06757322B2 Space diversity and coding, spread-spectrum antenna and method 有权
标题翻译：多输入多输出扩频系统及方法
公开(公告)号：US06757322B2
公开(公告)日：2004-06-29
申请号：US10254461
申请日：2002-09-25
申请人： Donald L. Schilling
发明人： Donald L. Schilling
IPC分类号： H04B1707
CPC分类号： H04B1/7115 , H04B7/0671 , H04B7/0678 , H04B7/0697 , H04B7/0891 , H04J13/0077
摘要： A system and method for transmitting a plurality of spread-spectrum signals over a communications channel having fading. The plurality of spread-spectrum signals are radiated by a plurality of antennas, with each antenna preferably spaced by one-quarter wavelength. A plurality of receiver antennas receive the plurality of spread-spectrum signals and a plurality of fading spread-spectrum signals. Each receiver antenna is coupled to a plurality of matched filters having a respective plurality of impulse responses matched to the chip-sequence signals of the plurality of spread-spectrum signals. A RAKE and space-diversity combiner combines, for each respective chip-sequence signal, a respective plurality of detected spread-spectrum signals and a respective multiplicity of detected-multipath-spread-spectrum signals, to generate a plurality of combined signals. The symbol amplitudes can be measured and erasure decoding employed to improve performance.
摘要翻译：一种用于通过具有衰落的通信信道发送多个扩频信号的系统和方法。多个扩频信号由多个天线辐射，每个天线优选地间隔四分之一波长。多个接收机天线接收多个扩频信号和多个衰落扩频信号。每个接收机天线耦合到具有与多个扩频信号的码片序列信号匹配的相应多个脉冲响应的多个匹配滤波器。 RAKE和空间分集组合器对于每个相应的码片序列信号组合相应的多个检测到的扩频信号和相应多个检测到的多路径扩频信号，以产生多个组合信号。可以测量符号幅度并采用擦除解码来提高性能。

107. 发明授权

US06754257B1 Frame timing synchronization method 有权
标题翻译：帧定时同步方法
公开(公告)号：US06754257B1
公开(公告)日：2004-06-22
申请号：US09407750
申请日：1999-09-28
申请人： Soichi Tsumura
发明人： Soichi Tsumura
IPC分类号： H04B1707
CPC分类号： H04B1/70751 , H04B1/70735 , H04B2201/70707 , H04J3/0608 , H04L27/22
摘要： A frame timing synchronization method of establishing frame synchronization includes the steps of obtaining an integration result, a plurality of number of times, by integrating the square of a complex reception sample from an arbitrary integration start point while shifting an integration range at predetermined intervals, making a search for the maximum integration result from the plurality of integration results, demodulating (despreading) complex reception samples included in a predetermined range having an integration start point as a center corresponding to the maximum integration result while setting the respective samples as demodulation (despreading) start points, and establishing frame synchronization by detecting the portion modulated (spread) by BPSK from the obtained demodulation (despreading) results.
摘要翻译：一种建立帧同步的帧定时同步方法包括以下步骤：通过在以任意的积分开始点积分复数接收样本的平方，通过以预定的间隔移位积分范围来获得积分结果多次，使得搜索来自多个积分结果的最大积分结果，将包含在具有积分开始点的预定范围内的解复用（解扩展）复数接收样本作为与最大积分结果相对应的中心，同时将各个样本设置为解调（解扩）通过从获得的解调（解扩）结果检测通过BPSK调制（扩展）的部分来建立帧同步。

108. 再颁专利

USRE38523E1 Spreading code sequence acquisition system and method that allows fast acquisition in code division multiple access (CDMA) systems 有权
标题翻译：扩展码序列采集系统和方法，允许在码分多址（CDMA）系统中快速采集
公开(公告)号：USRE38523E1
公开(公告)日：2004-06-01
申请号：US09559771
申请日：2000-04-27
申请人： Fatih Ozluturk
发明人： Fatih Ozluturk
IPC分类号： H04B1707
CPC分类号： H04W52/143 , H04B1/70753 , H04B1/70754 , H04B1/708 , H04L25/0212 , H04L27/206 , H04L27/2332 , H04W52/146 , H04W52/265 , H04W52/267
摘要： Methods for generating code sequences that have rapid acquisition properties and apparatus which implement the methods by processing spreading codes on in-phase and quadrature channels. A first method combines two or more short codes to produce a long code. This method may use many types of code sequences, one or more of which are rapid acquisition sequences of length L that have average acquisition phase searches r=log2L. Two or more separate code sequences are transmitted over the complex channels. If the sequences have different phases, an acquisition may be done by acquisition circuits in parallel over the different code sequences when the relative phase shift between the two or more code channels is known. When the received length L codes or the length L correlation codes used to find the phase of the received codes have a mutual phase delay of L/2, the average number of tests to find the code phase of the received code is L/4. The codes sent on each channel may be the same code, with the code phase in one channel being delayed with respect to the other channel, or they may be different code sequences.

109. 发明授权

US06744807B1 Multi-dimensional spread spectrum modem 失效
标题翻译：多维扩频调制解调器
公开(公告)号：US06744807B1
公开(公告)日：2004-06-01
申请号：US09583707
申请日：2000-05-31
申请人： Louis Philippus Linde , Frans Engelbertius Marx
发明人： Louis Philippus Linde , Frans Engelbertius Marx
IPC分类号： H04B1707
CPC分类号： H04J13/10 , H04B1/707 , H04L27/2272 , H04L27/2273
摘要： An n-dimensional direct sequence spread spectrum modulator (10) comprises a spreading sequence generator (21) for generating a set of n/2 substantially mutually orthogonal spreading sequences. The spreading sequences each comprises combinations of the real and imaginary parts of complex sequences. A first frequency spreading arrangement (24,26) comprises a first input (24.1,26.1) for a first set of n/2 parallel input data streams (d1(t) d2(t)), a second input (24.2, 26.2) for the set of spreading sequences and an output (24.3, 26.3). Respective input data streams are associated with respective spreading sequences in the set of spreading sequences. A second frequency spreading arrangement (28,30) comprises a first input (28.1, 30.1) for a second set of n/2 parallel input data streams (d3(t), d4(t)), a second input (28.2, 30.2) for the set of spreading sequences and an output (28.3, 30.3). Respective input data streams being associated with respective spreading sequences in the set of spreading sequences. A quadrature modulator (42) comprises a first input (36.1) and a second input (38.1) and an output (40). The first input (36.1) is connected to the output of the first frequency spreading arrangement and the second input (38.1) is connected to the output of the second frequency spreading arrangement. An associated demodulator is also disclosed.
摘要翻译： n维直接序列扩频调制器（10）包括用于生成一组n / 2个基本上相互正交的扩频序列的扩展序列发生器（21）。扩展序列各自包括复数序列的实部和虚部的组合。第一频率扩展装置（24,26）包括用于第一组n / 2并行输入数据流（d1（t）d2（t））的第一输入（24.1,26.1），第二输入（24.2,26.2）用于扩展序列的集合和输出（24.3,26.3）。各个输入数据流与扩展序列集合中的相应扩展序列相关联。第二频率扩展装置（28,30）包括用于第二组n / 2并行输入数据流（d3（t），d4（t））的第一输入（28.1,30.1），第二输入（28.2,30.2））用于扩展序列集合和输出（28.3,30.3）。各个输入数据流与扩展序列集合中的相应扩展序列相关联。正交调制器（42）包括第一输入（36.1）和第二输入（38.1）和输出（40）。第一输入（36.1）连接到第一频率扩展装置的输出，第二输入端（38.1）连接到第二频率扩展装置的输出。还公开了相关联的解调器。

110. 发明授权

US06714586B2 Sliding matched filter with flexible hardware complexity 有权
标题翻译：滑动匹配滤波器具有灵活的硬件复杂性
公开(公告)号：US06714586B2
公开(公告)日：2004-03-30
申请号：US09852085
申请日：2001-05-10
申请人： Gang Yang , Don Li
发明人： Gang Yang , Don Li
IPC分类号： H04B1707
CPC分类号： H04B1/70751 , H04B1/70752 , H04B1/70775 , H04B1/7093 , H04B1/7095
摘要： Multi-path effects are common in mobile communications. When coupled with spread-spectrum signals utilizing spreading code sequences, detection of more than one multi-path signal becomes a necessity in order to output a clean signal with little loss. In accord with the invention, a spread-spectrum sliding matched-filter searcher system comprises a partial matched-filter that receives the input spread-spectrum signal. The searcher matches samples of the input signal with a tap length m of the reference code and produces a first correlation value. The first correlation value is compared to a first threshold. When it equals or exceeds the first threshold, the first correlation value is integrated to produce a second correlation value. This second value is compared with a second threshold, which if met signifies the detection of the multi-path signal. The process is repeated until all significant multi-path signals are detected. This design of the present invention is flexible in nature because the searcher can be programmed to act like a matched-filter, a correlator, or a combination of both while significantly improving the search time and reducing the amount of hardware and complexity characteristic of a matched-filter.
摘要翻译：多路径效应在移动通信中很常见。当与利用扩展码序列的扩展频谱信号相结合时，为了输出几乎没有损失的干净信号，检测多于一个多路径信号是必要的。根据本发明，扩频滑动匹配滤波器搜索器系统包括接收输入扩频信号的部分匹配滤波器。搜索者使用参考码的抽头长度m匹配输入信号的样本，并产生第一相关值。将第一相关值与第一阈值进行比较。当其等于或超过第一阈值时，第一相关值被积分以产生第二相关值。将该第二值与第二阈值进行比较，如果满足表示多路径信号的检测。重复该过程，直到检测到所有有效的多路径信号。本发明的这种设计本质上是灵活的，因为搜索器可被编程为像匹配滤波器，相关器或两者的组合一样起作用，同时显着地改善搜索时间并减少硬件的数量和匹配的复杂度特性 -过滤。

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