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公开(公告)号：US20110003551A1
公开(公告)日：2011-01-06
申请号：US12864984
申请日：2009-01-22
CPC分类号： H04W52/325 , H04W72/10
摘要： A transmitter which communicates with a receiver. The transmitter includes a null subcarrier allocation unit which allocates a null subcarrier based on a priority and a signal. The priority is for allocating a null subcarrier to each subcarrier. The priority is a ranking predetermined with the receiver. The signal is allocated to each subcarrier. The transmitter includes a transmission unit which transmits the signal using the subcarrier allocated by the null subcarrier allocation unit as the null subcarrier to the receiver.
摘要翻译： 与接收器通信的发射机。 发射机包括基于优先级和信号分配空子载波的无效副载波分配单元。 优先级是将零副载波分配给每个子载波。 优先级是与接收机预定的排名。 信号被分配给每个子载波。 发送机包括发送单元，该发送单元使用由空副载波分配单元分配的副载波作为无效副载波向接收机发送信号。
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公开(公告)号：US20090323515A1
公开(公告)日：2009-12-31
申请号：US12525039
申请日：2008-01-22
申请人： Katsutoshi Ishikura , Hidenobu Fukumasa , Toshiaki Kameno , Hirokazu Kobayashi , Koichi Tsunekawa
发明人： Katsutoshi Ishikura , Hidenobu Fukumasa , Toshiaki Kameno , Hirokazu Kobayashi , Koichi Tsunekawa
IPC分类号： H04J11/00
CPC分类号： H04L27/2657 , H04L5/0007 , H04L5/0044 , H04L5/0048 , H04L27/2613 , H04L27/2675
摘要： In an environment with large transmission delays, use of an OFDM transmitter which includes: a pilot/data allocator for allocating pilot/data symbols on OFDM symbols and an OFDM receiver which includes: an antenna for receiving the OFDM signals sent out from the antenna of this OFDM transmitter; a ratio unit for frequency transforming the OFDM signals received as RF signals to baseband signals; a frequency offset estimate for estimating an offset value; and a frequency offset corrector for performing frequency compensation by the amount of the frequency offset, improves data transmission efficiency while reducing interference of data between sub-carriers to prevent degradation of reception characteristics by performing appropriate frequency offset correction.
摘要翻译： 在具有大传输延迟的环境中，使用OFDM发射机，其包括：用于在OFDM符号上分配导频/数据符号的导频/数据分配器和OFDM接收机，其包括：用于接收从天线发送的OFDM信号的天线 该OFDM发射机; 用于将作为RF信号接收的OFDM信号频率变换为基带信号的比率单元; 用于估计偏移值的频率偏移估计; 以及用于通过频率偏移量执行频率补偿的频率偏移校正器，在减少子载波之间的数据干扰的同时提高数据传输效率，以通过执行适当的频率偏移校正来防止接收特性的劣化。
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公开(公告)号：US20070263529A1
公开(公告)日：2007-11-15
申请号：US11660762
申请日：2005-08-08
IPC分类号： H04L5/04
CPC分类号： H04L5/0016 , H04L1/0057 , H04L1/0072 , H04L5/0048 , H04L5/0053 , H04L25/0226 , H04L25/0228
摘要： In a wireless communication system based on an OFDM technology, a control channel and a low-speed data channel can be multiplexed without a reduction in the transmission speed of a traffic channel. In a communication system that is operated by multiplexing a traffic channel for performing high-speed data transmission and a control channel for performing low-speed control information transmission, an OFDM signal for transmitting the traffic channel and an OFDM signal for transmitting a control signal are multiplexed for transmission. In a receiving station, the control channel is first demodulated/decoded and a judgment is made as to whether or not any signal addressed to the self station is contained in a traffic channel signal. When any signal addressed to the self station is contained, the control channel signal is cancelled from the reception signal in accordance with a wireless channel quality and the traffic channel is demodulated.
摘要翻译： 在基于OFDM技术的无线通信系统中，可以复用控制信道和低速数据信道，而不会降低业务信道的传输速度。 在通过多路化用于执行高速数据传输的业务信道和用于执行低速控制信息传输的控制信道进行操作的通信系统中，用于发送业务信道的OFDM信号和用于发送控制信号的OFDM信号是 多路传输。 在接收站中，首先对控制信道进行解调/解码，并且判断寻址到自身站的任何信号是否包含在业务信道信号中。 当包含寻址到自站的任何信号时，控制信道信号根据无线信道质量从接收信号中消除，业务信道被解调。
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4.发明申请CELLULAR MOBILE COMMUNICATION SYSTEM, BASE STATION TRANSMISSION DEVICE AND MOBILE STATION RECEPTION DEVICE IN CELLULAR MOBILE COMMUNICATION SYSTEM, AND BASE STATION SELECTION CONTROL METHOD IN CELLULAR MOBILE COMMUNICATION SYSTEM 审中-公开蜂窝移动通信系统，蜂窝移动通信系统中的基站传输设备和移动站接收设备，以及蜂窝移动通信系统中的基站选择控制方法公开(公告)号：US20100222063A1
公开(公告)日：2010-09-02
申请号：US11997544
申请日：2006-07-31
IPC分类号： H04W72/04
CPC分类号： H04L27/2602 , H04B1/692 , H04B7/022 , H04B7/024 , H04L1/0003 , H04L1/0006 , H04L1/0009 , H04L1/0026 , H04L1/0031 , H04L1/0035 , H04L1/009 , H04L1/04 , H04L1/206 , H04L5/0007 , H04L5/0035 , H04L27/2626 , H04L27/2647 , H04L2001/0092 , H04L2001/0093
摘要： A cellular mobile communication system has a problem that communication quality is lowered by increase of an attenuation amount of a desired signal and increase of an interfering signal amount at a position apart from a base station and high-speed data communication becomes difficult. To solve this problem, when a mobile station M is at a location D where the radio attenuation is small, the mobile station M uses an OFDM signal to transmit data x, y and z via a traffic channel all at once so that data communication is performed at the maximum communication speed. On the other hand, when the mobile station M moves from the location D to a location E which is far from any of the base stations A, B and C, the mobile station M divides, the data x, y and z into three and, by using a diffusion OFDM signal having a high interference resistance, increases the interference resistance, and transmits data, x, y and z almost simultaneously from the three base stations A, B and C, thereby realizing equivalence of high-speed data transmission.
摘要翻译： 蜂窝移动通信系统存在通过增加期望信号的衰减量并且在远离基站的位置增加干扰信号量而降低通信质量的问题，并且高速数据通信变得困难。 为了解决这个问题，当移动站M在无线电衰减小的位置D时，移动站M使用OFDM信号通过业务信道同时发送数据x，y和z，以便数据通信是 以最大通信速度执行。 另一方面，当移动站M从位置D移动到远离任何基站A，B和C的位置E时，移动站M将数据x，y和z分成三个和 通过使用具有高抗干扰性的扩散OFDM信号，增加了干扰电阻，并且几乎同时从三个基站A，B和C发送数据x，y和z，从而实现了高速数据传输的等同。
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5.发明申请公开(公告)号：US20130003597A1
公开(公告)日：2013-01-03
申请号：US13635871
申请日：2011-03-29
IPC分类号： H04W24/00
CPC分类号： H04W24/10 , H04L1/0026 , H04L1/0035 , H04L1/20 , H04L2001/0097 , H04W84/047
摘要： A base station device communicates with a mobile station device, either directly or via a relay station device. The base station device includes: a reference signal transmission instruction unit configured to instruct the mobile station device to transmit a reference signal; and a reference signal measurement instruction unit configured to instruct the relay station device to measure the reference signal that is transmitted by the mobile station device.
摘要翻译： 基站装置直接或经由中继站装置与移动台装置进行通信。 基站装置包括：参考信号发送指示单元，其被配置为指示移动站装置发送参考信号; 以及参考信号测量指示单元，被配置为指示中继站设备测量由移动站设备发送的参考信号。
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公开(公告)号：US06198731B1
公开(公告)日：2001-03-06
申请号：US08995252
申请日：1997-12-19
IPC分类号： H04B7216
CPC分类号： H04B1/707 , H04B7/2628
摘要： There are disclosed a radiocommunication apparatus and a radiocommunication system. There are provided a receiving section capable of receiving a plurality of types of signals which have been spread through use of different spread code information according to a CDMA scheme in a transmitting-side radiocommunication apparatuses; and a spread demodulation section which carries out despread processing for the common signal portions of the plurality of types of signals received by the receiving section through use of a composite spread code formed from a plurality of spread codes. Accordingly, it becomes possible to significantly improve the quality of received signals.
摘要翻译： 公开了一种无线电通信装置和无线电通信系统。 提供了一种能够在发送侧无线电通信装置中接收根据CDMA方案通过使用不同扩展码信息而扩展的多种类型的信号的接收部分; 以及扩展解调部分，通过使用由多个扩展码形成的复合扩展码，对由接收部分接收的多种类型的信号的公共信号部分进行解扩处理。 因此，可以显着提高接收信号的质量。
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7.发明授权Wireless communication system, base station device, mobile station device, and macrodiversity selection method 有权无线通信系统，基站装置，移动台装置，宏分集选择方法公开(公告)号：US08219042B2
公开(公告)日：2012-07-10
申请号：US12067762
申请日：2006-09-11
摘要： A wireless communication system, a base station device, a mobile station device, and a macrodiversity selection method of the invention, in a base station device including a macrodiversity function among a plurality of sectors, select a macrodiversity method for the mobile station device from a plurality of macrodiversity methods, in accordance with a predetermined determination reference based on reception conditions of the mobile station device.
摘要翻译： 本发明的无线通信系统，基站装置，移动台装置以及宏分集选择方法，在包含多个扇区中的宏分集功能的基站装置中，从移动台装置的宏分集方法 多个宏分集方法，根据基于移动站装置的接收条件的预定确定参考。
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公开(公告)号：US07376114B2
公开(公告)日：2008-05-20
申请号：US10272660
申请日：2002-10-17
CPC分类号： H04J13/0003 , H04B1/707 , H04B2201/70706 , H04J13/0051 , H04J13/18
摘要： A code multiplexing transmitting apparatus spread-spectrum modulates transmission data of a plurality of channels by spreading codes that differ from one another, combines the spread-spectrum signals of each of the channels and transmits the resultant spread-spectrum modulated signal. A spread-spectrum modulating unit for each channel includes a phase shifter for shifting, by a predetermined angle channel by channel, the phase of a position vector of the spread-spectrum modulated signal of each channel. As the result of such phase control, the phases of pilot signal portions of the spread-spectrum modulated signals of the respective channels are shifted relative to one another so that the peak values of the code-multiplexed signal can be suppressed.
摘要翻译： 扩频编码多路复用发送装置通过扩展彼此不同的码来对多个信道的发送数据进行扩频调制，合成各个信道的扩频信号，并发送合成的扩频调制信号。 用于每个通道的扩频调制单元包括移相器，用于以预定的角度逐个通道移位每个通道的扩频调制信号的位置矢量的相位。 作为这种相位控制的结果，各通道的扩频调制信号的导频信号部分的相位彼此相对移位，从而可以抑制码复用信号的峰值。
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公开(公告)号：US06791965B2
公开(公告)日：2004-09-14
申请号：US10272635
申请日：2002-10-17
IPC分类号： H04B7216
CPC分类号： H04J13/00 , H04B1/707 , H04B2201/70701 , H04B2201/70706 , H04J13/0051 , H04J13/12
摘要： A code multiplexing transmitting apparatus spread-spectrum modulates transmission data of a plurality of channels by spreading codes that differ from one another, combines the spread-spectrum signals of each of the channels and transmits the resultant spread-spectrum modulated signal. A spread-spectrum modulating unit for each channel includes a phase shifter for shifting, by a predetermined angle channel by channel, the phase of a position vector of the spread-spectrum modulated signal of each channel. As the result of such phase control, the phases of pilot signal portions of the spread-spectrum modulated signals of the respective channels are shifted relative to one another so that the peak values of the code-multiplexed signal can be suppressed.
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公开(公告)号：US06359875B1
公开(公告)日：2002-03-19
申请号：US09084830
申请日：1998-05-26
IPC分类号： H04B7216
CPC分类号： H04B1/707 , H04B2201/70707
摘要： A CDMA receiving apparatus receives a direct sequence CDMA signal produced through QPSK spreading modulation, performs coherent detection of the direct sequence CDMA signal, and despreads the signals, obtained through the coherent detection, through a despreading portion. The despreading portion comprises a selector portion. The selector portion selects signals as a demodulated and despread in-phase output signal and a demodulated and despread quadrature output signal, in accordance with despreading codes, from demodulated in-phase and quadrature signals obtained through the coherent detection, and an inverted in-phase and quadrature signals obtained as a result of the signs of the demodulated in-phase and quadrature signals being inverted.
摘要翻译： CDMA接收装置接收通过QPSK扩展调制产生的直接序列CDMA信号，执行直接序列CDMA信号的相干检测，并且通过去扩展部分解调通过相干检测获得的信号。 解扩部分包括选择器部分。 选择器部分根据去扩展码从解调的通过相干检测获得的同相和正交信号中选择信号作为解调和去扩展的同相输出信号和解调和去扩展的正交输出信号，以及反相同相 并且作为被解调的同相和正交信号的符号的结果获得的正交信号被反转。
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