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    • 44. 发明公开
    • ULTRA WIDEBAND SCRAMBLER FOR REDUCING POWER SPECTRAL DENSITY
    • 超宽带加扰器降低功率谱密度
    • EP1712011A1
    • 2006-10-18
    • EP05807403.0
    • 2005-01-10
    • MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.Mo, Shaomin Samuel
    • GELMAN, Alexander, D.GELMAN, Alexander, D
    • H04B1/69
    • H04L25/03866H04B1/7176H04B1/719
    • Scrambling methods for scrambling ultra wideband (UWB) data are disclosed. UWB data (420) having payload data and non-payload data is scrambled (422, 424) by shifting a first bit string (412) a first number of bits, shifting a second bit string (410) a second number of bits, combining (414A - 414N) the first and second shifted bit strings, generating (418) scrambler control bits (416) from the combined first and second shifted bit strings, and scrambling (424) at least a portion of the UWB data responsive to the scrambler control bits. According to another aspect, UWB data is scrambled by scrambling payload data using a pseudo-random number generator having a seed set of multiple seeds having low seed correlation, each seed within the seed set having a predefined number of bits, and selective applying random frame reversion (428, 430) to non-payload data and/or to entire frame of data.
    • 公开了用于加扰超宽带(UWB)数据的加扰方法。 通过将第一位串(412)移位第一位数,将第二位串(410)移位第二位数,对具有有效载荷数据和无有效载荷数据的UWB数据(420)进行加扰(422,424) (414A-414N)所述第一和第二移位位串,从所述组合的第一和第二移位位串中产生(418)扰乱器控制位(416),以及响应于所述扰乱器扰乱(424)所述UWB数据的至少一部分 控制位。 根据另一方面,通过使用具有具有低种子相关性的多个种子的种子集的伪随机数生成器来对UWB数据进行加扰,所述种子集中的每个种子具有预定数量的比特,并且选择性地应用随机帧 (428,430)转换为非有效载荷数据和/或整个数据帧。
    • 46. 发明公开
    • COMMUNICATIONS SYSTEMS AND METHODS
    • 通信系统和方法
    • EP1656743A1
    • 2006-05-17
    • EP04743461.8
    • 2004-07-19
    • ARTIMI LTD
    • BAKER, DavidMOORE, Mark, Justin
    • H04B1/69
    • H04B1/71637H04B1/7176H04B1/719
    • This invention generally relates to wired and Wireless ultra wideband (UWB) data communications apparatus and methods, and in particular to UWB receiver systems and architectures, and to correlators therefore. An ultra wideband (UWB) receiver system comprising: a receiver front end to receive a UWB signal having a plurality of multipath components; and a correlator coupled to said receiver front end to correlate said UWB signal with a reference signal; and wherein said UWB signal comprises a plurality of pulses; wherein each said pulse has a plurality of multipath components; wherein said reference signal comprises a plurality of multipath components of a said pulse; and wherein said correlator comprises at least one correlator module configured to correlate a plurality of said multipath components of a said pulse with said reference signal.
    • 本发明一般涉及有线和无线超宽带(UWB)数据通信设备和方法,并且特别涉及UWB接收机系统和体系结构,并因此涉及相关器。 一种超宽带(UWB)接收机系统,包括:接收机前端,用于接收具有多个多路径分量的UWB信号; 以及一个与所述接收机前端耦合的相关器,用于将所述UWB信号与一个参考信号相关联; 并且其中所述UWB信号包括多个脉冲; 其中每个所述脉冲具有多个多路径分量; 其中所述参考信号包括所述脉冲的多个多径分量; 并且其中所述相关器包括至少一个相关器模块,其被配置为将所述脉冲的多个所述多径分量与所述参考信号进行相关。