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
    • 2. 发明授权
    • Methodology for received signal enhancement utilizing delay diversity
processing
    • 使用延迟分集处理的接收信号增强方法
    • US6118807A
    • 2000-09-12
    • US535947
    • 1995-09-28
    • Bruce G. WarrenAlan F. JovanovichFrank J. Pergal
    • Bruce G. WarrenAlan F. JovanovichFrank J. Pergal
    • H04B1/7073H04B1/7117H04N5/225A61F2/06H04L27/30
    • H04B1/7073H04B1/7117
    • A delay diversity processor for use in receiving direct sequence spread spectrum data utilizes multipath signals to enhance bit synchronization performance by integrating the magnitude of each multipath signal to allow for erratic fluctuations in the multipath signal. As a result, the receiver is less prone to sudden signal strength variation that might trigger erroneous bit resynchronization. The delay diversity processor comprises a first circuit which determines a magnitude value for each of a plurality of correlated signal samples of individual data bits of plural data streams of the received spread spectrum data. A second circuit integrates each of the magnitude values over a period of time corresponding to receipt of a plurality of the individual data bits. The integrated magnitude values provide a measure of confidence of a particular one of the correlated signal samples with respect to remaining ones of the correlated signal samples. The correlated signal sample having the most consistently high measure of confidence is thus most likely to contain reliable and valid data. In an embodiment of the delay diversity processor, the digital delay circuit of the second circuit provides for resetting of the integrated magnitude values within following interruption of receipt of the spread spectrum data. The data values within the digital delay circuit can be reset either to zero, or to a predetermined value. The use of a predetermined value improves the ability of the delay diversity processor to generate valid data following an interruption of the spread spectrum data.
    • 用于接收直接序列扩展频谱数据的延迟分集处理器利用多径信号来增强比特同步性能,通过对每个多路径信号的幅度进行积分以允许多径信号中的不稳定波动。 结果,接收机不太容易发生可能触发错误位重新同步的突发信号强度变化。 延迟分集处理器包括第一电路,其确定接收到的扩展频谱数据的多个数据流的各个数据比特的多个相关信号样本中的每一个的幅度值。 第二电路在对应于多个单独数据位的接收的一段时间内对每个幅度值进行积分。 集成的幅度值提供相对于相关信号样本中的特定一个相对于相关信号样本中的剩余信号样本的置信度的量度。 因此,具有最一致的高置信度的相关信号样本最有可能包含可靠且有效的数据。 在延迟分集处理器的实施例中,第二电路的数字延迟电路提供在接收扩展频谱数据的随后中断之前复位积分幅度值。 数字延迟电路内的数据值可以重置为零或预定值。 使用预定值提高延迟分集处理器在扩展频谱数据的中断之后产生有效数据的能力。