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    • 1. 发明申请
    • Method and system for power controlled effective allocation of sub-bands in ultra-wideband communication
    • 超宽带通信中子带功率控制有效分配的方法和系统
    • US20070091983A1
    • 2007-04-26
    • US11443040
    • 2006-05-31
    • Wipawee SiriwongpairatZhu HanK.J. Liu
    • Wipawee SiriwongpairatZhu HanK.J. Liu
    • H04B1/00H04K1/10
    • H04L5/0075H04B1/71632H04B1/719H04L5/0007H04L5/0039H04L5/0064
    • A power controlled sub-band assignment and power allocation among users in a multiband UWB system aims to reduce power consumption without compromising performance. The overall transmit power is minimized under the practical constraints, including packet error rate, transmission rate, and FCC regulations. To insure the system feasibility in variable channel conditions, an optimization scheme manages the assignment of UWB devices to respective channels subject to their suitability to the requested users' transmission rates. An inexpensive suboptimal approach reduces the complexity of the optimization procedure and achieves a comparable performance to those of the complex full search optimization routine. The suboptimal scheme obtains the feasible solutions adaptively when the channels assignment, initially calculated under the optimization criteria, is not feasible for the user's rate requirement.
    • 多频带UWB系统中的用户之间的功率受控子带分配和功率分配旨在降低功耗而不影响性能。 在实际限制下,总发射功率最小化,包括分组错误率,传输速率和FCC规定。 为了在可变信道条件下确保系统的可行性,优化方案管理将UWB设备分配给各个信道,由它们适合于所请求的用户的传输速率。 廉价的次优方法降低了优化过程的复杂性,并实现了与复杂的全搜索优化程序的性能相当的性能。 当优化标准初步计算出的信道分配对于用户的速率要求是不可行的,次优方案自适应地获得可行的解决方案。
    • 7. 发明授权
    • Method and system for power controlled effective allocation of sub-bands in ultra-wideband communication
    • 超宽带通信中子带功率控制有效分配的方法和系统
    • US07653122B2
    • 2010-01-26
    • US11443040
    • 2006-05-31
    • Wipawee SiriwongpairatZhu HanK. J. Ray Liu
    • Wipawee SiriwongpairatZhu HanK. J. Ray Liu
    • H04L27/30
    • H04L5/0075H04B1/71632H04B1/719H04L5/0007H04L5/0039H04L5/0064
    • A power controlled sub-band assignment and power allocation among users in a multiband UWB system aims to reduce power consumption without compromising performance. The overall transmit power is minimized under the practical constraints, including packet error rate, transmission rate, and FCC regulations. To insure the system feasibility in variable channel conditions, an optimization scheme manages the assignment of UWB devices to respective channels subject to their suitability to the requested users' transmission rates. An inexpensive suboptimal approach reduces the complexity of the optimization procedure and achieves a comparable performance to those of the complex full search optimization routine. The suboptimal scheme obtains the feasible solutions adaptively when the channels assignment, initially calculated under the optimization criteria, is not feasible for the user's rate requirement.
    • 多频带UWB系统中的用户之间的功率受控子带分配和功率分配旨在降低功耗而不影响性能。 在实际限制下,总发射功率最小化,包括分组错误率,传输速率和FCC规定。 为了在可变信道条件下确保系统的可行性,优化方案管理将UWB设备分配给各个信道,由它们适合于所请求的用户的传输速率。 廉价的次优方法降低了优化过程的复杂性,并实现了与复杂的全搜索优化程序的性能相当的性能。 当优化标准初步计算出的信道分配对于用户的速率要求是不可行的,次优方案自适应地获得可行的解决方案。
    • 9. 发明申请
    • Authentication Method and Apparatus
    • 验证方法和设备
    • US20120079576A1
    • 2012-03-29
    • US12892599
    • 2010-09-28
    • Zhu HanLiu QiangHuan Hao Zou
    • Zhu HanLiu QiangHuan Hao Zou
    • H04L9/32
    • H04L9/321G06F21/316G06F2221/2101H04L2209/56
    • An identity authentication method is provided. The method comprises obtaining records information of a valid user, where the records information indicates behaviors having been executed by the valid user; mapping, based on an orthogonal behavior model having multiple mutually orthogonal dimensions, records information to the multiple dimensions, wherein behaviors indicated by records information mapped to different dimensions do not overlap therebetween and have no logical cause and effect relationship; sampling records information mapped to different dimensions, respectively, so as to generate an authentication questionnaire including a plurality of authentication questions; computing, responsive to answers of a client to the authentication questionnaire, a total confidence P for the client being a valid user; outputting a positive authentication result, responsive to the total confidence probability P falling into a confidence interval; and outputting a negative authentication result, responsive to the total confidence probability P failing to fall into a confidence interval. The present invention further provides a corresponding identity authentication apparatus.
    • 提供身份认证方法。 该方法包括:获取有效用户的记录信息,其中记录信息指示由有效用户执行的行为; 基于具有多个相互正交维度的正交行为模型的映射将信息记录到多维,其中由映射到不同维度的记录信息指示的行为在其之间不重叠,并且没有逻辑因果关系; 分别映射到不同维度的采样记录信息,以便生成包括多个认证问题的认证问卷; 响应于客户端对认证问卷的答案,计算客户端作为有效用户的总置信度P; 响应于落入置信区间的总置信概率P输出肯定认证结果; 并且响应于总置信度概率P不能落入置信区间而输出负认证结果。 本发明还提供了相应的身份认证装置。