会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 8. 发明授权
    • Device and method for controlling powers of orthogonal channel and quasi-orthogonal channel in CDMA communication system
    • CDMA通信系统正交信道和准正交信道功率的装置及方法
    • US06671266B1
    • 2003-12-30
    • US09277653
    • 1999-03-26
    • Hi-Chan MoonJae-Heung YeomSoon-Young YoonJae-Min Ahn
    • Hi-Chan MoonJae-Heung YeomSoon-Young YoonJae-Min Ahn
    • H04B7216
    • H04W52/24H04B1/707H04J13/0003H04J13/0022H04J13/004H04W52/44
    • A power control device for a CDMA communication system using different kinds of spreading codes. In the power control device for a base station device, a first channel generator generates a first channel signal by spreading first input data with an orthogonal code and a second channel generator generates a second channel signal by spreading second input data with a quasi-orthogonal code. The second channel signal has a gain higher than that of the first channel signal. A first gain controller controls power of the first channel signal and a second gain controller controls power of the second channel signal. An adder adds the first channel signal to the second channel signal, and a spreader spreads a signal output from the adder with a pseudo-random noise (PN) code. The base station transmits a response request message to a mobile station via the second channel, and retransmits the response request message after increasing a transmission power of the second channel when a response message is not received from the mobile station.
    • 一种使用不同种类的扩展码的CDMA通信系统的功率控制装置。 在用于基站装置的功率控制装置中,第一信道发生器通过以正交码扩频第一输入数据来产生第一信道信号,第二信道发生器通过用准正交码扩频第二输入数据来产生第二信道信号 。 第二通道信号的增益高于第一通道信号的增益。 第一增益控制器控制第一通道信号的功率,第二增益控制器控制第二通道信号的功率。 加法器将第一通道信号加到第二通道信号上,扩展器以伪随机噪声(PN)代码扩展从加法器输出的信号。 基站经由第二信道向移动台发送应答请求消息,并且在不从移动台接收到响应消息的情况下,在增加第二信道的发送功率之后,重发响应请求消息。
    • 9. 发明授权
    • Device and method for reducing the peak-to-average power ratio of a mobile station's transmit power
    • 用于降低移动台发射功率的峰值与平均功率比的装置和方法
    • US06459723B1
    • 2002-10-01
    • US09310389
    • 1999-05-12
    • Je-Woo KimYoung-Jun HwangSoon-Young YoonJae-Heung Yeom
    • Je-Woo KimYoung-Jun HwangSoon-Young YoonJae-Heung Yeom
    • H04B1707
    • H04W52/367H04B1/707H04B2201/70706H04W52/52
    • A device and method are provided for reducing the peak-to-average power ratio of a mobile station's transmit power in a mobile communication system by spreading and modulating the transmission data by a complex spreading sequence. The complex spreading sequence is generated to have a plurality of chips and a phase difference of 90° between every two successive complex chips in response to each chip of a PN (Pseudo Noise) sequence. The device and method flexibly control the mobile transmit power by limiting its peak-to-average power ratio to a specific range and thus confining the mobile transmit power to a linear characteristic portion in a characteristic curve of a power amplifier. The phase of the complex spreading sequence is prevented from shifting by 180° (i.e., &pgr;) to maintain the mobile transmit power in the linear portion of the power amplifier characteristic curve.
    • 提供一种装置和方法,用于通过以复扩展顺序扩展和调制发送数据来减少移动台在移动通信系统中的发射功率的峰均功率比。 响应于PN(伪噪声)序列的每个芯片,产生复扩展序列以具有多个芯片,并且在每两个连续复合码片之间具有90°的相位差。 该装置和方法通过将其峰值平均功率比限制在特定范围并且因此将移动发射功率限制在功率放大器的特性曲线中的线性特征部分来灵活地控制移动发射功率。 复数扩展序列的相位被防止偏移180°(即,pi),以将移动发射功率保持在功率放大器特性曲线的线性部分。