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热词
    • 2. 发明授权
    • Method and system for the dynamic modification of control paremeters in
a transmitter power control system
    • 发射机功率控制系统中控制参数的动态修改方法和系统
    • US5396516A
    • 1995-03-07
    • US020482
    • 1993-02-22
    • Roberto PadovaniNoam Ziv
    • Roberto PadovaniNoam Ziv
    • H04B1/40H04B7/005H04B7/26H04J13/00H04L1/00H04L1/08H04L25/02H04B17/00
    • H04W52/267H04L1/0046H04L1/08H04L1/201H04L25/0262H04B2201/70705H04W52/12H04W52/20H04W52/50Y02B60/50
    • In a communication system in which direct sequence spread spectrum modulation techniques are used interference is generated in communications by remote stations since the communications share the same frequency spectrum. In order to increase system capacity the power level of the remote station transmitters are controlled by the local station. A setpoint is generated by the local station and compared with the remote station signal strength measured at the local station. The result of this comparison is used to generate power level adjustment commands which are sent to the remote station. The remote station is responsive to the power level adjustment commands for increasing or decreasing remote station transmitter power. In a spread spectrum communication system in which data is encoded at variable data rates, the local station determines the rate at which received data was encoded by the transmitting remote station. The data is decoded at each possible rate with error metrics generated that are representative of the quality of the data decoded at each rate. A rate decision algorithm is used to evaluate the error metrics and make a decision on the rate at which the data was transmitted. A pattern match of rate decisions is used to modify a setpoint so as to closely control the transmitting power of the remote station as a function of the quality of the received data.
    • 在使用直接序列扩频调制技术的通信系统中,由远程站的通信产生干扰,因为通信共享相同的频谱。 为了提高系统容量,远程站发射机的功率电平由本地站控制。 设定点由本地站产生,并与本地站测量的远程站信号强度进行比较。 该比较的结果用于产生发送到远程站的功率电平调整命令。 远程站响应于用于增加或减少远程站发射机功率的功率电平调整命令。 在以可变数据速率对数据进行编码的扩频通信系统中,本地站确定接收到的数据由发送远程站编码的速率。 以每个可能的速率对数据进行解码,其中生成的误差度量代表以每个速率解码的数据的质量。 使用速率决策算法来评估误差度量,并对数据传输速率作出决定。 使用速率决定的模式匹配来修改设定点,以便根据接收到的数据的质量来密切地控制远程站的发射功率。