Supervisory audio tone based carrier-to-interference measurement in a
mobile cellular communication system
    11.
    发明授权
    Supervisory audio tone based carrier-to-interference measurement in a mobile cellular communication system 失效
    在移动蜂窝通信系统中基于监听音频的载波对干扰测量

    公开(公告)号:US5752190A

    公开(公告)日:1998-05-12

    申请号:US99503

    申请日:1993-07-30

    CPC classification number: H04W24/00 H04W16/14 H04W36/30 H04W84/042 H04W88/08

    Abstract: A Supervisory Audio Tone (SAT) based Carrier-to-Interference (C/I) ratio measurement system uses the SAT tone to determine the desired signal to undesired interferers so that an intelligent hand-off decision can be made in a digital cellular communication system. The measurement is implemented by digital signal processors which allows additional signal processing and subsequently noise rejection over analog techniques. The received level of the desired SAT as well as the received levels of the SATs for the co-channel interferers is detected. The ratio of the desired SAT level to the sum of the undesired SAT levels provides the C/I measurement. By monitoring this C/I measurement, the base station can determine when to make a hand-off. This SAT based C/I measurement system also aids in the selection of a candidate cell to which the subscriber is handed-off. Surveillance receivers in the candidate cells make SAT based C/I measurements as well as Received Signal Strength Indication (RSSI) measurements. The cell with the most favorable channel conditions would be the cell to which the hand-off is made.

    Abstract translation: 基于监控音频(SAT)的载波干扰(C / I)比率测量系统使用SAT音调来确定期望的信号到不想要的干扰源,从而可以在数字蜂窝通信系统中进行智能切换决策 。 该测量由数字信号处理器实现,其允许额外的信号处理和随后的噪声抑制超过模拟技术。 检测所期望的SAT的接收电平以及同信道干扰源的SAT的接收电平。 所需SAT电平与不需要的SAT电平之和的比率提供C / I测量值。 通过监视该C / I测量,基站可以确定何时进行切换。 这种基于SAT的C / I测量系统还有助于选择用户被切换的候选小区。 候选单元中的监视接收器使基于SAT的C / I测量以及接收信号强度指示(RSSI)测量。 具有最有利的信道条件的小区将是进行切换的小区。

    Pre-phase error correction
    12.
    发明授权

    公开(公告)号:US08488650B2

    公开(公告)日:2013-07-16

    申请号:US12421028

    申请日:2009-04-09

    Inventor: John D. Kaewell

    Abstract: A CDMA communication system includes a signal processor which encodes voice and nonvoice signals into data at various rates, e.g. data rates of 8 kbps, 16 kbps, 32 kbps, or 64 kbps as I and Q signals. The signal processor selects a specific data rate depending upon the type of signal, or in response to a set data rate. When the signal is received and demodulated, the baseband signal is at the chip level. Both the I and Q components of the signal are despread using the conjugate of the pn sequence used during spreading, returning the signal to the symbol level. Carrier offset correction is performed at the symbol level. A lower overall processing speed is therefore required.

    PRE-PHASE ERROR CORRECTION
    13.
    发明申请
    PRE-PHASE ERROR CORRECTION 有权
    PRE相位错误校正

    公开(公告)号:US20090196330A1

    公开(公告)日:2009-08-06

    申请号:US12421028

    申请日:2009-04-09

    Inventor: John D. Kaewell

    Abstract: A CDMA communication system includes a signal processor which encodes voice and nonvoice signals into data at various rates, e.g. data rates of 8 kbps, 16 kbps, 32 kbps, or 64 kbps as I and Q signals. The signal processor selects a specific data rate depending upon the type of signal, or in response to a set data rate. When the signal is received and demodulated, the baseband signal is at the chip level. Both the I and Q components of the signal are despread using the conjugate of the pn sequence used during spreading, returning the signal to the symbol level. Carrier offset correction is performed at the symbol level. A lower overall processing speed is therefore required.

    Abstract translation: CDMA通信系统包括信号处理器,其以不同的速率将语音和非发音信号编码成数据,例如, 数据速率为8kbps,16kbps,32kbps或64kbps作为I和Q信号。 信号处理器根据信号的类型或响应于设定的数据速率来选择特定的数据速率。 当信号被接收和解调时,基带信号处于芯片级。 信号的I和Q分量都使用扩展期间使用的pn序列的共轭进行解扩,将信号返回到符号级。 载波偏移校正在符号级进行。 因此,需要较低的总体处理速度。

    Code division multiple access modem interface
    17.
    发明授权
    Code division multiple access modem interface 失效
    码分多址调制解调器接口

    公开(公告)号:US06973523B1

    公开(公告)日:2005-12-06

    申请号:US09699145

    申请日:2000-10-27

    Abstract: A modem interface transfers data between a high data rate interface and a wireless interface. The modem interface has a plurality of parallel data highways. Each data highway has frames with time slots for transferring data. The plurality of highways outputs data to the high data rate interface and the wireless interface in selected time slots. At least one of the data highways has an input configured to receive data from the high data rate interface in selected time slots. At least one of the data highways has an input configured to receive data from the wireless interface in selected time slots. A processor controls the transfer of data between the plurality of highways.

    Abstract translation: 调制解调器接口在高数据速率接口和无线接口之间传输数据。 调制解调器接口具有多个并行数据高速公路。 每个数据高速公路都具有用于传送数据的时隙的帧。 多个高速公路在选定的时隙中向高数据速率接口和无线接口输出数据。 数据高速公路中的至少一个具有被配置为在所选择的时隙中从高数据速率接口接收数据的输入。 至少一个数据高速公路具有被配置为在所选择的时隙中从无线接口接收数据的输入。 处理器控制多个高速公路之间的数据传送。

    Method for simultaneously receiving and processing multiple channels of data
    18.
    发明授权
    Method for simultaneously receiving and processing multiple channels of data 有权
    同时接收和处理多个数据通道的方法

    公开(公告)号:US06865217B2

    公开(公告)日:2005-03-08

    申请号:US10425431

    申请日:2003-04-29

    Abstract: A method for simultaneously receiving and processing multiple channels of data at independent rates which share a same frequency spectrum begins with receiving a multichannel data communication signal having multiple data channels at independent data rates on the same frequency spectrum. Next, selected channels of data of the received signal are separated and the data rate for each channel is identified. Then each separated channel of the received signal is decoded at an assigned data rate using a common decoding memory. Lastly, each separated channel is directed to a different decoding means and each decoding means is assigned a data rate responsive to the identification of data rates when the channels were separated.

    Abstract translation: 同时以独立速率接收和处理共享相同频谱的多信道数据的方法开始于在相同频谱上以独立数据速率接收具有多个数据信道的多信道数据通信信号。 接下来,分离所接收的信号的所选择的数据通道,并且识别每个通道的数据速率。 然后,使用公共解码存储器,以分配的数据速率解码接收信号的每个分离的信道。 最后,每个分离的信道被引导到不同的解码装置,并且当信道被分离时,每个解码装置被分配响应于数据速率的识别的数据速率。

    User equipment which uses pre-rotation before transmission
    19.
    发明授权
    User equipment which uses pre-rotation before transmission 有权
    传输前使用预旋转的用户设备

    公开(公告)号:US06690711B2

    公开(公告)日:2004-02-10

    申请号:US10077634

    申请日:2002-02-15

    Inventor: John D. Kaewell

    Abstract: The present invention is an apparatus for reducing transmission errors by a user equipment (UE) when transmitting a communication signal. An RF communication signal is received at the UE and analyzed for errors. A correction signal is then generated based upon the analysis. Prior to transmission of the communication signal from the UE, the communication signal is corrected using the correction signal.

    Abstract translation: 本发明是一种用于在发送通信信号时减少用户设备(UE)的传输错误的装置。 在UE处接收RF通信信号并分析错误。 然后基于分析产生校正信号。 在从UE发送通信信号之前,使用校正信号校正通信信号。

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