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    • 1. 发明申请
    • METHOD FOR SPECIFYING PULSE CHARACTERISTICS
    • 用于指定脉冲特性的方法
    • WO0197477A3
    • 2002-04-18
    • PCT/US0118795
    • 2001-06-12
    • TIME DOMAIN CORPFULLERTON LARRY WROBERTS MARK DPENDERGRASS MARCUS HRICHARDS JAMES L
    • ROBERTS MARK DPENDERGRASS MARCUS HRICHARDS JAMES L
    • H04L25/49
    • A coding method specifies characteristics of pulses of a pulse train including, but not limited to, time position, polarity, amplitude, width, and type. Pulse characteristics are specified, for example, by mapping code elements to value range layouts, discrete value layouts, or to combination value range/discrete value layouts. A code element can be an integer of floating point value, and can specify two or more characteristics of a pulse. Various approaches are described. A value range layout can be subdivided into components, sub-components of components, where each sub-component can be a sub-component of the component, or a smaller component of the sub-component (or an even smaller component of the smaller component, ad infinitum). Methods are provided for defining non-allowable regions within value range layouts to be considered when generating a code. Various approaches address characteristic value layouts specifying fixed values and characteristic value layouts specifying non-fixed values, and accommodate differences between temporal and non-temporal pulse characteristics. The method can require codes to satisfy predefined criteria. Predefined criteria can limit the number of pulse characteristic values within a non-allowable region. The predefined criteria can be based on relative pulse characteristic values. The predefined criteria can also pertain to spectral properties and to correlation properties. The predefined criteria may pertain to code length and to the number of members of a code family. The pulse train characteristics may pertain to a subset of the pulse train
    • 编码方法规定了包括但不限于时间位置,极性,幅度,宽度和类型的脉冲序列的脉冲的特性。 例如,通过将代码元素映射到值范围布局,离散值布局或组合值范围/离散值布局来指定脉冲特性。 代码元素可以是浮点值的整数,并且可以指定脉冲的两个或多个特性。 描述各种方法。 值范围布局可以细分为组件的子组件,其中每个子组件可以是组件的子组件,或子组件的较小组件(或较小组件的较小组件) ,ad infinit)。 提供了用于定义在生成代码时要考虑的值范围布局内的不可允许区域的方法。 各种方法解决指定固定值的特征值布局和指定非固定值的特征值布局,并适应时间和非时间脉冲特性之间的差异。 该方法可能需要代码来满足预定义的标准。 预定义的标准可以限制非允许区域内的脉冲特征值的数量。 预定义的标准可以基于相对脉冲特征值。 预定义的标准也可以涉及光谱性质和相关性质。 预定义的标准可以涉及代码长度和代码族的成员数量。 脉冲串特性可能与脉冲序列的子集有关
    • 3. 发明申请
    • A METHOD FOR SPECIFYING NON-TEMPORAL PULSE CHARACTERISTICS
    • 一种用于指定非时间脉冲特性的方法
    • WO0197476A3
    • 2002-06-06
    • PCT/US0118792
    • 2001-06-12
    • TIME DOMAIN CORPROBERTS MARK DPENDERGRASS MARCUS HFULLERTON LARRY WCOWIE IVAN A
    • ROBERTS MARK DPENDERGRASS MARCUS HFULLERTON LARRY WCOWIE IVAN A
    • H04L25/49
    • H04L25/4902
    • A code, comprised of at least one code element, specifies at least one non-temporal characteristic of at least one pulse. A code element can be mapped to a value within a layout, comprising a range of pulse characteristic values, divided into components and sub-components. The code element can be an integer, or a floating-point number, and may be used in conjunction with an absolute or relative offset value. The code element values can be subdivided into parts, that individually, or in combination, specify non-temporal pulse characteristics. The code element can be used to specify a number of characteristics of a pulse, including pulse polarity; pulse amplitude; pulse width; pulse type; and pulse position in time. The type of the pulse indicates whether the pulse is a square wave pulse, sawtooth pulse, Haar wavelet pulse, gaussian monopulse, doublet pulse, triplet pulse, or set of wavelets.
    • 由至少一个代码元素组成的代码指定至少一个脉冲的至少一个非时间特性。 代码元素可以被映射到布局内的值,包括被分成组件和子组件的脉冲特征值的范围。 代码元素可以是整数或浮点数,并且可以与绝对或相对偏移值一起使用。 代码元素值可以细分为部分,分别或组合地指定非时间脉冲特征。 代码元素可用于指定脉冲的特征数,包括脉冲极性; 脉冲幅度; 脉宽 脉冲型; 和脉搏位置。 脉冲类型表示脉冲是方波脉冲,锯齿波脉冲,哈尔小波脉冲,高斯单脉冲,双脉冲,三线态脉冲或一组小波。
    • 5. 发明申请
    • METHOD AND APPARATUS FOR IMPLEMENTING PRECISION TIME DELAYS
    • 实现精度时间延迟的方法和装置
    • WO03025853A3
    • 2003-05-08
    • PCT/US0229361
    • 2002-09-17
    • TIME DOMAIN CORP
    • BRETHOUR VERNON RPENDERGRASS MARCUS HCONFER RYAN N
    • H03K5/00H03K5/13H03K5/135H03K5/159H04B1/7163H03K3/00
    • H04B1/71635H03K5/13H03K5/135H03K5/159H03K2005/00156H04B1/71632
    • A system and method of implementing precision time delays that provides important and novel improvements over prior techniques of implementing time delays by utilizing a new strategy for selecting the values 812, 814 from a sine/cosine lookup table 1124. Sine and cosine values 812, 814 which result in non-uniform amplitudes enable increased overall accuracy with fewer bits communicated from the look-up table 1124 to the analog portion of the system. There is further provided a variable amplitude threshold element 1112 for receiving the output from a summer element 1110 which performs summing of the multiplied sine and cosine signals. The time delay accuracy of the resulting phase and amplitude hybrid system can be improved either by increasing the number of bits in the sine/cosine phase management section or by increasing the number of bits in the amplitude section.
    • 一种实现精确时间延迟的系统和方法,其通过利用从正弦/余弦查找表1124中选择值812,814的新策略来实现实现时间延迟的先前技术提供重要和新颖的改进。正弦和余弦值812,814 这导致不均匀的幅度使得能够以从查找表1124传送到系统的模拟部分的较少比特来增加总体精度。 还提供了一个可变幅度阈值元件1112,用于接收来自对乘法正弦和余弦信号进行求和的加法元件1110的输出。 可以通过增加正弦/余弦相位管理部分中的位数或通过增加幅度部分中的位数来提高所得到的相位和幅度混合系统的时间延迟精度。
    • 7. 发明申请
    • METHODS AND SETS OF PICONETS USING TIME FREQUENCY DIVISION MULTIPLE ACCESS
    • 使用时频分割多路访问的方法和胶片集
    • WO2004036833A3
    • 2004-08-12
    • PCT/US0333125
    • 2003-10-17
    • ALEREON INCPENDERGRASS MARCUS HBRETHOUR VERNON R
    • PENDERGRASS MARCUS HBRETHOUR VERNON R
    • H04B1/713H04L12/28H04L12/56H04W28/04H04W84/18
    • H04L5/0037H04L5/0062H04L5/0073H04W84/18
    • A set of piconets and corresponding methods and computer programs may reduce contention time between piconets. In one embodiment, a seven-length code architecture may be used with group(s) of bands so that contention time cannot exceed 1/7 of the time. Up to seven different bands can be used within each group. When less than seven bands are used (e.g., three or six), at least one of the bands may be assigned to more than one dwell time during a time span. Alternatively, each dwell time within the time span may be assigned to a different band. The state may be changed as needed or desired. Substitution of extra bands may also be used. Using either scheme (repeated bands or changing states), a prime-number architecture can be used with a non-prime number of different bands. Simultaneous communications using at least two bands within a piconet may be used.
    • 一组微微网以及相应的方法和计算机程序可以减少微微网之间的争用时间。 在一个实施例中,七长码体系结构可以与一个或多个频带组一起使用,使得争用时间不能超过时间的1/7。 每个组内最多可以使用七个不同的频段。 当使用少于七个频带(例如三个或六个)时,至少一个频带可以在一段时间间隔内被分配多于一个驻留时间。 或者,可以将时间跨度内的每个停留时间分配给不同的频带。 状态可能会根据需要或需要进行更改。 也可以使用替换额外的乐队。 使用任一方案(重复频带或改变状态),素数结构可以与非素数的不同频带一起使用。 可以使用在微微网内使用至少两个频带的同时通信。