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

US06804217B1 CDMA mobile station apparatus 失效
标题翻译： CDMA移动台装置
公开(公告)号：US06804217B1
公开(公告)日：2004-10-12
申请号：US09663359
申请日：2000-09-15
申请人： Tetsuhiko Miyatani , Koji Yotsumoto , Shunji Abe
发明人： Tetsuhiko Miyatani , Koji Yotsumoto , Shunji Abe
IPC分类号： H04B7216
CPC分类号： H04B1/7107
摘要： A CDMA mobile station apparatus receives a spread control signal including a non-orthogonal spread signal generated using a non-orthogonal spreading code which is non-orthogonal with a data signal spreading code and a spread data signal produced by spreading a data signal with a data signal spreading code from a base station apparatus via a radio link. The mobile station apparatus has a non-orthogonal spread signal generating unit for generating a non-orthogonal spread signal whose phase rotation caused by a radio transmission path is compensated for using a non-orthogonal spreading code, a subtracting unit for subtracting the generated non-orthogonal spread signal from the received signal to generate a difference signal, and a data signal demodulating unit for demodulating the difference signal into a data signal. The mobile station apparatus is capable of canceling an entire spread broadcasting signal, processing a band-limited signal, or processing a spreading code with a suppression coefficient.
摘要翻译： CDMA移动站装置接收扩展控制信号，该扩展控制信号包括使用与数据信号扩展码非正交的非正交扩展码产生的非正交扩展信号，以及通过用数据扩展数据信号产生的扩展数据信号信号扩展码经由无线电链路从基站装置发送。移动站装置具有：非正交扩展信号生成单元，用于生成使用非正交扩展码补偿由无线传输路径引起的相位旋转的非正交扩展信号;减法单元，来自接收信号的正交扩展信号以产生差分信号;以及数据信号解调单元，用于将差分信号解调为数据信号。移动站装置能够消除整个扩展广播信号，处理频带限制信号，或者以抑制系数处理扩展码。

2. 发明授权

US06791960B1 Pilot signals for synchronization and/or channel estimation 有权
标题翻译：用于同步和/或信道估计的导频信号
公开(公告)号：US06791960B1
公开(公告)日：2004-09-14
申请号：US09373703
申请日：1999-08-13
申请人： Young-Joon Song
发明人： Young-Joon Song
IPC分类号： H04B7216
CPC分类号： H04L25/0226 , H04B1/7075 , H04B1/709 , H04B2201/70701 , H04L7/041 , H04L25/0224
摘要： The frame synchronization words of the preferred embodiment are especially suitable for frame synchronization confirmation. By adding the autocorrelation functions of shaded frame synchronization words, double maximum values equal in magnitude and opposite polarity at zero and middle shifts are obtained. This property can be used to slot-by-slot and double-check frame synchronization timing and reduce the synchronization search time. Further, the present invention allows a simpler construction of a correlator circuit for a receiver.
摘要翻译：优选实施例的帧同步字特别适用于帧同步确认。通过加上阴影帧同步字的自相关函数，获得了在零和中间位移处的幅度相等和极性相反的双最大值。此属性可用于逐个插槽并仔细检查帧同步定时，并减少同步搜索时间。此外，本发明允许用于接收机的相关器电路的更简单的构造。

3. 发明授权

US06791955B1 System, transmitter and receiver for code division multiplex transmission 失效
标题翻译：用于码分复用传输的系统，发射机和接收机
公开(公告)号：US06791955B1
公开(公告)日：2004-09-14
申请号：US09663202
申请日：2000-09-18
申请人： Hideo Kikuchi , Mutsumu Serizawa , Tokihiko Yokoi , Eiichi Watanabe , Shuji Hirakawa
发明人： Hideo Kikuchi , Mutsumu Serizawa , Tokihiko Yokoi , Eiichi Watanabe , Shuji Hirakawa
IPC分类号： H04B7216
CPC分类号： H04L1/0059 , H04B1/7075 , H04B1/7115 , H04J3/0605 , H04J13/00 , H04L1/0025 , H04L1/0071 , H04L1/0075 , H04L1/0078 , H04L7/046
摘要： The code division multiplex transmission system according to the present invention produces data for transmission by, time-division multiplexing the signals for synchronizing spread code prepared for an easy synchronization of spread code on the receiving side and the information related to the structure or synchronization of each of a plurality of transmission data streams such as parameters information about the coding rate of the convolution code and interleaving size for each transmission data stream, generating spread frequency modulated signals of the above time-division multiplexed signals by a spread frequency modulation using a spread code known to the receiving side, and code-division multiplexing the resulting spread frequency modulated signals over the spread frequency modulated signals of the plurality of transmission data streams. As a result, the receiving terminal can obtain information such as parameters information of all the transmission data streams, as long as the receiving terminal receives the synchronization signal. Therefore, even if the receiving terminal does not understand the parameter values required for the reception of each transmission data stream, the receiving terminal can receive any transmission data stream easily and quickly, by setting the parameter values for each receiving process based on the parameters information about each transmission data stream obtained by the reception of the synchronization signal.
摘要翻译：根据本发明的码分复用传输系统通过对接收侧的扩展码的容易同步准备的同步扩频码的信号进行时分复用和与各接收侧的结构或同步相关的信息进行时分复用，多个传输数据流，例如关于卷积码的编码率和每个传输数据流的交织大小的参数信息，通过使用扩展码的扩频调制产生上述时分复用信号的扩频调制信号在接收侧已知，并且对所述多个传输数据流的扩频调制信号进行码分多路复用。结果，只要接收终端接收到同步信号，接收终端可以获得诸如所有发送数据流的参数信息的信息。因此，即使接收终端不理解每个发送数据流的接收所需的参数值，接收终端也可以通过基于参数信息设定各接收处理的参数值，容易且快速地接收任何发送数据流关于通过接收同步信号获得的每个传输数据流。

4. 发明授权

US06788662B2 Method for adaptive reverse power control for spread-spectrum communications 有权
标题翻译：用于扩频通信的自适应反向功率控制的方法
公开(公告)号：US06788662B2
公开(公告)日：2004-09-07
申请号：US09789830
申请日：2001-02-21
申请人： Faith M. Ozluturk , Gary R. Lomp , John Kowalski
发明人： Faith M. Ozluturk , Gary R. Lomp , John Kowalski
IPC分类号： H04B7216
CPC分类号： H04W52/322 , G06F13/374 , H03H17/0226 , H03H17/06 , H04B1/707 , H04B1/7075 , H04B1/70753 , H04B1/70755 , H04B1/70758 , H04B1/7077 , H04B1/708 , H04B1/7085 , H04B1/7093 , H04B1/7115 , H04B1/712 , H04B7/2637 , H04B7/264 , H04B2201/70701 , H04B2201/70702 , H04B2201/70703 , H04B2201/70707 , H04B2201/7071 , H04J13/16 , H04L1/0042 , H04L1/0047 , H04L1/0059 , H04L5/1446 , H04L25/0212 , H04L27/206 , H04L27/2332 , H04L2027/003 , H04L2027/0053 , H04N1/00912 , H04N1/3333 , H04N2201/3335 , H04W52/08 , H04W52/146 , H04W52/24 , H04W52/26 , H04W52/325 , H04W52/343 , H04W52/36 , H04W52/367 , H04W52/44 , H04W52/50 , H04W52/52 , H04W52/54 , H04W52/60
摘要： A code-division-multiple-access (CDMA) system employing spread-spectrum modulation. The CDMA system has a base station (BS), and a plurality of subscriber units. The signals transmitted between the base station and subscriber unit use spread-spectrum modulation. The improvement method for adaptive reverse power control (APC) from a subscriber unit (SU) to a base station (BS), comprises the steps of sending from the subscriber unit, using spread-spectrum modulation, a SU-spreading code on a reverse channel. The base station despreads the SU-spreading code on the reverse channel as a despread signal, determines a first power level Pd which includes power of the despread signal plus noise and a second power level PN, which includes despread-noise power. The base station determines a first error signal e1, from the first power level Pd, the second power level PN, and a required signal-to-noise ratio SNRREQ for service type, and a second error signal e2, from a measure of total received power Prt at the base station, and an automatic gain control (AGC) set point Po. The base station forms a combined error signal from the first error signal e1, the second error signal e2, a first weight a1 and a second weight a2, and hard limits the combined error signal to form a single APC bit. The APC bit is transmitted to the subscriber unit. In response to the APC bit, the subscriber adjusts transmitter power to the base station.
摘要翻译：采用扩频调制的码分多址（CDMA）系统。 CDMA系统具有基站（BS）和多个用户单元。在基站和用户单元之间传输的信号使用扩频调制。从用户单元（SU）到基站（BS）的自适应反向功率控制（APC）的改进方法包括以下步骤：使用扩展频谱调制从用户单元发送SU扩频码渠道。基站将反向信道上的SU扩频码解扩展为解扩信号，确定包括解扩信号加噪声功率的第一功率电平Pd和包括解扩噪声功率的第二功率电平PN。基站从第一功率电平Pd，第二功率电平PN和用于服务类型的所需信噪比SNRREQ和第二误差信号e2根据接收到的总数量度量确定第一误差信号e1 基站的功率Prt和自动增益控制（AGC）设定点Po。基站形成来自第一误差信号e1，第二误差信号e2，第一权重a1和第二权重a2的组合误差信号，并且硬限制组合误差信号以形成单个APC比特。 APC位被发送到用户单元。响应于APC位，用户调整到基站的发射机功率。

5. 发明授权

US06781976B1 Time-alignment apparatus and method for providing data frames of a plurality of channels with predetermined time-offsets 有权
标题翻译：时间校准装置和方法，用于提供具有预定时间偏移量的多个信道的数据帧
公开(公告)号：US06781976B1
公开(公告)日：2004-08-24
申请号：US09667529
申请日：2000-09-22
申请人： Raimund Sönning , Gian Huaman-Bollo
发明人： Raimund Sönning , Gian Huaman-Bollo
IPC分类号： H04B7216
CPC分类号： H04J3/0632
摘要： The invention relates to a time-alignment apparatus and a time-alignment method of a transmitter (TX) of a telecommunication system TELE. Successive data frames (ch1/0, ch2/0, ch3/0, ch4/0, ch8/0, ch300/0) are written to one or two frame memories (RAM 1, RAM2) starting at a respective frame start write address (FRST-ADRchy). A third frame memory (RAM3) having a read state is read out in the column direction such that one data symbol of each storage resource (RES1, RES2 . . . RES300) can be output to a modulator unit (BBTX) of the transmitter (TX). The read-write state (WR/RD) of the three frame memories (RAM1, RAM2, RAM3) is cyclically switched through a first lo third alignment mode (M1, M2, M3) such that always a first write state memory (RAM1) and a second write state memory (RAM2) are provided.
摘要翻译：本发明涉及电信系统TELE的发射机（TX）的时间对准装置和时间对准方法。将相继的数据帧（ch1 / 0，ch2 / 0，ch3 / 0，ch4 / 0，ch8 / 0，ch300 / 0）写入从相应帧起始写入地址开始的一个或两个帧存储器（RAM1，RAM2）（FRST-ADRchy）。具有读取状态的第三帧存储器（RAM3）在列方向被读出，使得每个存储资源（RES1，RES2 ... RES300）的一个数据符号可被输出到发送器的调制器单元（BBTX） TX）。三个帧存储器（RAM1，RAM2，RAM3）的读写状态（WR / RD）通过第一第三对准模式（M1，M2，M3）循环切换，使得总是第一写入状态存储器（RAM1）并提供第二写入状态存储器（RAM2）。

6. 发明授权

US06778833B1 Method for allocating identifiers in a cellular wireless network 失效
标题翻译：在蜂窝无线网络中分配标识符的方法
公开(公告)号：US06778833B1
公开(公告)日：2004-08-17
申请号：US09711439
申请日：2000-11-13
申请人： Frederick Fortuna
发明人： Frederick Fortuna
IPC分类号： H04B7216
CPC分类号： H04W16/12 , H04W16/02 , H04W16/24
摘要： A method for allocating identifiers in a cellular wireless network. The method may determine the optimal distribution of identifiers, such as pseudo-random offset numbers, to the sectors and cells of a Code Division Multiple Access cellular wireless system. The method may ensure that those identifiers that are used more than once by the system are allocated to sectors that are as far apart as possible. The method allocates identifiers preferentially to sectors in more tightly packed regions of the network. Then the method determines how widely spread the identifiers are. Sectors with identifiers that are near each other are then preferentially reallocated their identifiers. The method repeats determining the spread of identifiers and reallocating the identifiers until the sectors retain the same identifiers, thereby reflecting a stable allocation of identifiers in the cellular wireless system.
摘要翻译：一种在蜂窝无线网络中分配标识符的方法。该方法可以确定码分多址蜂窝无线系统的扇区和小区的诸如伪随机偏移号的标识符的最佳分布。该方法可以确保系统使用多于一次的那些标识符被分配给尽可能远的扇区。该方法优先将标识符分配给网络中更紧密包装的区域中的扇区。然后，该方法确定标识符的扩展程度。标识符彼此靠近的扇区然后优先重新分配其标识符。该方法重复确定标识符的扩展并重新分配标识符，直到扇区保持相同的标识符，从而反映蜂窝无线系统中的标识符的稳定分配。

7. 发明授权

US06778515B2 Receiving station for wireless telephone system with diversity transmission and method 失效
标题翻译：无线电话系统接收站采用分集传输方式
公开(公告)号：US06778515B2
公开(公告)日：2004-08-17
申请号：US10095961
申请日：2002-03-12
申请人： D. Ridgely Bolgiano , Gilbert E LaVean
发明人： D. Ridgely Bolgiano , Gilbert E LaVean
IPC分类号： H04B7216
CPC分类号： H04B7/0671 , G01S5/10 , G01S5/14 , H01Q21/29 , H04B7/022 , H04B7/082 , H04B7/0857 , H04B7/0888 , H04W56/00 , H04W64/00
摘要： A subscriber station for a cellular system that utilizes transmission diversity by transmitting a plurality time slotted signals for communicating data. A receiver sequentially receives at least a first data signal corresponding to the data in a first time slot and a second data signal corresponding to the data in a second time slot. The second time slot occurring after the first time slot so that the data signals are not simultaneously received. A combiner for reconstructs the data from the received data signals. Where the subscriber station is for a CDMA cellular system, the receiver receives the first and second time slotted data signals as PN spread spectrum modulated data signals. A despreader and demodulator despreads and demodulates the received data signals using PN codes and the combiner reconstructs the data from the despread and demodulated data signals. In one embodiment, first and second PN codes used by the receiver are part of a PN code sequence produced by a PN code generator without resetting. Preferably, the despreader and demodulater discriminate against all other PN spread spectrum modulated data signals. Preferably, the subscriber station includes a measuring device for measuring respective times of arrival of the received data signals and a processor for computing the location of the subscriber station from respective measured times of arrival of the data signals.
摘要翻译：一种用于蜂窝系统的用户站，其通过发送用于传送数据的多个时隙信号来利用传输分集。接收机顺序地接收与第一时隙中的数据相对应的第一数据信号和对应于第二时隙中的数据的第二数据信号。在第一时隙之后发生的第二时隙，使得不同时接收数据信号。用于从接收到的数据信号重建数据的组合器。在用户站用于CDMA蜂窝系统的情况下，接收机接收第一和第二时隙数据信号作为PN扩频调制数据信号。解扩器和解调器使用PN码对接收的数据信号进行解扩和解调，并且组合器从去扩展和解调的数据信号中重构数据。在一个实施例中，接收机使用的第一和第二PN码是由PN码发生器产生的PN码序列的一部分，而不需要重置。优选地，解扩器和解调器鉴别所有其它PN扩频调制数据信号。优选地，用户站包括用于测量接收到的数据信号的相应时间的测量装置和用于从相应的测量的数据信号到达时间计算用户站的位置的处理器。

8. 发明授权

US06771632B2 Sub-channels for the random access channel in time division duplex 有权
标题翻译：用于时分双工的随机接入信道的子信道
公开(公告)号：US06771632B2
公开(公告)日：2004-08-03
申请号：US10020725
申请日：2001-12-12
申请人： Stephen G. Dick , Ana Lucia Iacono , Janet Stern-Berkowitz
发明人： Stephen G. Dick , Ana Lucia Iacono , Janet Stern-Berkowitz
IPC分类号： H04B7216
CPC分类号： H04B7/2637 , H04B7/2618 , H04B7/2653 , H04W74/0866 , H04W74/0891
摘要： Sub-channels are defined for a physical random access channel of a wireless time division duplex communication system using code division multiple access. The sub-channels carry information between system users and a system network. A series of radio frames have a sequence of timeslots. For a particular timeslot number of the sequence, each sub-channel of the particular timeslot number is uniquely defined by one radio frame of the series.
摘要翻译：子信道被定义为使用码分多址的无线时分双工通信系统的物理随机接入信道。子通道在系统用户和系统网络之间携带信息。一系列无线电帧具有一系列时隙。对于序列的特定时隙号，特定时隙号的每个子信道由该系列的一个无线电帧唯一地定义。

9. 发明授权

US06768728B1 Device and method for exchanging frame messages of different lengths in CDMA communication system 有权
标题翻译：用于在CDMA通信系统中交换不同长度的帧消息的装置和方法
公开(公告)号：US06768728B1
公开(公告)日：2004-07-27
申请号：US09268242
申请日：1999-03-15
申请人： Young-Ky Kim , Jae-Min Ahn , Soon-Young Yoon , Hee-Won Kang , Hyun-Suk Lee , Jin-Soo Park , Jae-Yoel Kim
发明人： Young-Ky Kim , Jae-Min Ahn , Soon-Young Yoon , Hee-Won Kang , Hyun-Suk Lee , Jin-Soo Park , Jae-Yoel Kim
IPC分类号： H04B7216
CPC分类号： H04J13/0003 , H04B7/2628 , H04J13/00 , H04J13/0022 , H04J13/0048
摘要： In a transmission device and method for a CDMA communication system, when a shorter frame message is generated during transmission of a longer frame message, the transmission of the longer frame message is interrupted, whereupon the shorter frame message is immediately transmitted in place of a portion of the longer frame message. In one embodiment, after the longer frame message is interrupted and the shorter frame message is transmitted, only the tail portion of the longer frame message is transmitted thereafter. That is, the replaced portion of the longer frame message is not transmitted following the shorter frame message transmission. In an alternative embodiment, following the shorter frame message transmission, the remainder of the longer frame message, from the point of interruption, is transmitted in its entirety. In the latter case, the longer frame message is delayed by the length of the shorter frame message.
摘要翻译：在用于CDMA通信系统的传输设备和方法中，当在较长帧消息的传输期间产生较短的帧消息时，较长帧消息的传输被中断，因此较短的帧消息被立即发送，代替部分的较长帧消息。在一个实施例中，在更长的帧消息被中断并且发送较短的帧消息之后，仅在其后发送较长帧消息的尾部。也就是说，更短帧消息的更换部分在更短的帧消息传输之后不被发送。在替代实施例中，在更短的帧消息传输之后，从中断点开始，更长的帧消息的其余部分被全部传输。在后一种情况下，较长帧消息被延迟较短帧消息的长度。

10. 发明授权

US06765895B1 Spectrum spread communication system 失效
标题翻译：频谱传播通信系统
公开(公告)号：US06765895B1
公开(公告)日：2004-07-20
申请号：US09661357
申请日：2000-09-14
申请人： Masatoshi Watanabe
发明人： Masatoshi Watanabe
IPC分类号： H04B7216
CPC分类号： H04W56/0085 , H04B7/2668 , H04L7/043 , H04L7/06
摘要： In base station side equipment, a control channel for transmitting control information and a communication channel for transmitting information to each mobile station are spread with different synchronizing codes before being superposed by operating a switch to switch the output of an adder over to the output of a synchronizing code generator. Further, a synchronizing code is periodically inserted in a signal by one symbol length and the signal is transmitted over the superposed channel. In a plurality of base station side equipment, moreover, the synchronizing code and its transmission period are equal and the transmission timing is asynchronous and independent. A synchronizing correlator in mobile station side equipment obtains the correlation value of the whole chip phase in a synchronizing code transmission period using the synchronizing code and decides a base station which is transmitting the synchronizing code at the greatest correlating peak position to the closest one and further extracts symbol timing from the peak position.
摘要翻译：在基站侧设备中，用于发送控制信息的控制信道和用于向每个移动站发送信息的通信信道在通过操作开关叠加以将加法器的输出切换到a的输出之前被扩展为具有不同的同步码同步代码生成器此外，同步码在信号中周期性地插入一个符号长度，并且信号通过叠加信道发送。此外，在多个基站侧设备中，同步码及其发送周期相等，并且发送定时是异步且独立的。移动站侧设备中的同步相关器使用同步码在同步码传输周期中获得整个码片相位的相关值，并将正在发送最大相关峰位置的同步码的基站确定为最接近的一个从峰值位置提取符号定时。

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