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    • 1. 发明授权
    • Method and apparatus for sharing transmit shaping filters among phase shifted signals
    • 用于在相移信号之间共享发射整形滤波器的方法和装置
    • US06181674B2
    • 2001-01-30
    • US09164428
    • 1998-09-30
    • Weizhuang XinGanning YangKenneth S. Walley
    • Weizhuang XinGanning YangKenneth S. Walley
    • H04J1100
    • H04L25/03834H04L27/20
    • A unique system for efficiently implementing filtered, phase shifted channels is disclosed. Instead of using separate transmit shaping filters for each channel, and modulating the filtered signals with phase-shifted carrier and one might suppose, the system phase rotates the signals for each channel and modulates such phase rotated signals with a single carrier. In addition, the system decomposes the phase rotations into 90° pre-filter portions and a post-filter portion of, for example, 45°. In an 8 channel system, such as proposed in the IS-95B standard, the channels are divided into two groups and the 90° phase rotations for each group are done at the input of the transmit shaping filters. A 45° phase rotation is then done for one of the groups at the output of the transmit shaping filter. Significantly, no multiplication is required.
    • 公开了一种用于有效实施滤波的相移信道的独特系统。 代替为每个通道使用单独的发送整形滤波器,并且用相移载波调制滤波信号,并且可以假设,系统相位旋转每个信道的信号并且用单载波调制这种相位旋转的信号。 此外,系统将相位旋转分解为90°预过滤部分和后过滤部分,例如45°。 在诸如IS-95B标准中提出的8通道系统中,通道被分成两组,每组的90°相位旋转在发送整形滤波器的输入处完成。 然后,在发射整形滤波器的输出处,对于组之一进行45°相位旋转。 值得注意的是,不需要乘法。
    • 9. 发明授权
    • System and method for receiving a signal
    • 用于接收信号的系统和方法
    • US06360085B1
    • 2002-03-19
    • US09409484
    • 1999-09-30
    • Kenneth S. Walley
    • Kenneth S. Walley
    • H04B1700
    • H04B1/1027H04B17/318
    • A system for receiving a signal is provided. The system includes a receiver that is operable to receive the signal, but which may also receive a noise signal. A duty cycle system is connected to the receiver. The duty cycle system can turn the receiver off and on at a controllable frequency. A signal strength system is also connected to the receiver, and is further connected to the duty cycle system. The signal strength system can determine the signal strength of the signal received by the receiver. If the signal strength indicates that the noise signal is not being received, the signal strength system generates control commands to the duty cycle system that cause the duty cycle system to cycle various components of the receiver that are used to suppress noise on and off, so as to conserve power.
    • 提供了一种用于接收信号的系统。 该系统包括可操作以接收信号但也可以接收噪声信号的接收器。 一个占空比系统连接到接收器。 占空比系统可以以可控的频率关闭和接通接收器。 信号强度系统也连接到接收器,并进一步连接到占空比系统。 信号强度系统可以确定接收机接收的信号的信号强度。 如果信号强度指示没有接收到噪声信号,则信号强度系统产生对占空比系统的控制命令,该占空比系统使占空比系统循环用于抑制噪声打开和关闭的接收机的各种组件,因此 以节省权力。