TOOLS FOR DESIGN AND ANALYSIS OF OVER-THE-AIR TEST SYSTEMS WITH CHANNEL MODEL EMULATION CAPABILITIES
    1.
    发明申请
    TOOLS FOR DESIGN AND ANALYSIS OF OVER-THE-AIR TEST SYSTEMS WITH CHANNEL MODEL EMULATION CAPABILITIES 有权
    用于设计和分析具有通道模拟仿真能力的空中测试系统的工具

    公开(公告)号:US20110270567A1

    公开(公告)日:2011-11-03

    申请号:US13095656

    申请日:2011-04-27

    IPC分类号: G06F19/00

    摘要: A wireless electronic device may serve as a device under test in a test system. The test system may include an array of over-the-air antennas that can be used in performing over-the-air wireless tests on the device under test (DUT). A channel model may be used in modeling a multiple-input-multiple-output (MIMO) channel between a multi-antenna wireless base station and a multi-antenna DUT. The test system may be configured to perform over-the-air tests that emulate the channel model. A design and analysis tool may be used to identify an optimum over-the-air test system setup. The tool may be used in converting a geometric model to a stochastic model for performing conducted tests. The tool may be used in converting a stochastic model to a geometric model and then further convert the geometric model to an over-the-air emulated stochastic model. The over-the-air emulated stochastic model may be used in performing conducted tests.

    摘要翻译: 无线电子设备可以在测试系统中用作被测设备。 测试系统可以包括可用于在被测设备(DUT)上执行空中无线测试的空中天线阵列。 可以使用信道模型来建模多天线无线基站和多天线DUT之间的多输入多输出(MIMO)信道。 测试系统可以被配置为执行模拟通道模型的空中测试。 可以使用设计和分析工具来识别最佳的空中测试系统设置。 该工具可用于将几何模型转换为用于执行进行测试的随机模型。 该工具可用于将随机模型转换为几何模型,然后将几何模型进一步转换为空中仿真随机模型。 空中仿真随机模型可用于进行测试。

    Tools for design and analysis of over-the-air test systems with channel model emulation capabilities
    2.
    发明授权
    Tools for design and analysis of over-the-air test systems with channel model emulation capabilities 有权
    用于设计和分析具有通道模拟仿真功能的空中测试系统的工具

    公开(公告)号:US08793093B2

    公开(公告)日:2014-07-29

    申请号:US13095656

    申请日:2011-04-27

    摘要: A wireless electronic device may serve as a device under test in a test system. The test system may include an array of over-the-air antennas that can be used in performing over-the-air wireless tests on the device under test (DUT). A channel model may be used in modeling a multiple-input-multiple-output (MIMO) channel between a multi-antenna wireless base station and a multi-antenna DUT. The test system may be configured to perform over-the-air tests that emulate the channel model. A design and analysis tool may be used to identify an optimum over-the-air test system setup. The tool may be used in converting a geometric model to a stochastic model for performing conducted tests. The tool may be used in converting a stochastic model to a geometric model and then further convert the geometric model to an over-the-air emulated stochastic model. The over-the-air emulated stochastic model may be used in performing conducted tests.

    摘要翻译: 无线电子设备可以在测试系统中用作被测设备。 测试系统可以包括可用于在被测设备(DUT)上执行空中无线测试的空中天线阵列。 可以使用信道模型来建模多天线无线基站和多天线DUT之间的多输入多输出(MIMO)信道。 测试系统可以被配置为执行模拟通道模型的空中测试。 可以使用设计和分析工具来识别最佳的空中测试系统设置。 该工具可用于将几何模型转换为用于执行进行测试的随机模型。 该工具可用于将随机模型转换为几何模型,然后将几何模型进一步转换为空中仿真随机模型。 空中仿真随机模型可用于进行测试。

    SUM RATE OF BROADCAST CHANNELS WITH OUTDATED 1-BIT FEEDBACK
    3.
    发明申请
    SUM RATE OF BROADCAST CHANNELS WITH OUTDATED 1-BIT FEEDBACK 有权
    广泛采用1位反馈的通道频率

    公开(公告)号:US20090005028A1

    公开(公告)日:2009-01-01

    申请号:US12111152

    申请日:2008-04-28

    IPC分类号: H04Q7/38

    CPC分类号: H04L1/0029 H04L1/0026

    摘要: A single-input single-output (SISO) downlink channel with K users is analyzed in the presence of Rayleigh flat fading. A limited channel state information (CSI) feedback scheme is included, where only an outdated 1-bit feedback per user is available at the base station for each fading block. A closed-form expression for the achievable ergodic sum-rate of the 1-bit feedback scheme is presented for any number of users, as a function of the fading temporal correlation coefficient, the threshold of the 1-bit CSI quantizer and the SNR. The sum-rate scales with increasing number of users as log logK, which is the same scaling law achieved by the optimal non-delayed full CSI feedback scheme.

    摘要翻译: 在存在瑞利平坦衰落的情况下分析具有K个用户的单输入单输出(SISO)下行链路信道。 包括有限的信道状态信息(CSI)反馈方案,其中每个用户在每个衰落块仅在基站处可用过时的1比特反馈。 根据衰落时间相关系数,1位CSI量化器的阈值和SNR,可以为任意数量的用户提供1位反馈方案的可实现的遍历和速率的闭合表达式。 总和率随着用户数量的增加而变化,如log logK,这是通过最佳非延迟全CSI反馈方案实现的相同的缩放规律。

    Sum rate of broadcast channels with outdated 1-bit feedback
    4.
    发明授权
    Sum rate of broadcast channels with outdated 1-bit feedback 有权
    具有过时1位反馈的广播频道总和率

    公开(公告)号:US08112095B2

    公开(公告)日:2012-02-07

    申请号:US12111152

    申请日:2008-04-28

    IPC分类号: H04W72/00

    CPC分类号: H04L1/0029 H04L1/0026

    摘要: A single-input single-output (SISO) downlink channel with K users is analyzed in the presence of Rayleigh flat fading. A limited channel state information (CSI) feedback scheme is included, where only an outdated 1-bit feedback per user is available at the base station for each fading block. A closed-form expression for the achievable ergodic sum-rate of the 1-bit feedback scheme is presented for any number of users, as a function of the fading temporal correlation coefficient, the threshold of the 1-bit CSI quantizer and the SNR. The sum-rate scales with increasing number of users as log log K, which is the same scaling law achieved by the optimal non-delayed full CSI feedback scheme.

    摘要翻译: 在存在瑞利平坦衰落的情况下分析具有K个用户的单输入单输出(SISO)下行链路信道。 包括有限的信道状态信息(CSI)反馈方案,其中每个用户在每个衰落块仅在基站处可用过时的1比特反馈。 根据衰落时间相关系数,1位CSI量化器的阈值和SNR,可以为任意数量的用户提供1位反馈方案的可实现的遍历和速率的闭合表达式。 总和率随着用户数量的增加而增加,作为log log K,这是通过最佳非延迟全CSI反馈方案实现的相同的缩放规律。