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公开(公告)号：US08085879B2
公开(公告)日：2011-12-27
申请号：US12508544
申请日：2009-07-23
申请人： Neil Birkett , Trevor Yensen , Phil Guillemette
发明人： Neil Birkett , Trevor Yensen , Phil Guillemette
IPC分类号： H04L27/22
摘要： The invention relates generally to the field of wireless communications and more particularly to a method of and device for detecting the presence of a received data packet in a digital receiver. The present invention proposes a simplified method of correlation by removing dependency on the amplitude fluctuations while at the same time maintaining phase relevancy. The key advancement involves mapping the complex quadrature amplitude modulation (QAM) preamble to a quantized phase shift keying (PSK) constellation before application to a matched complex correlator. The proposed process essentially “amplitude normalizes” the input signal without the use or complexity associated with a divider. This simplified normalization scheme makes the packet detection algorithm robust against amplitude variations in the input signal, while still allowing for good correlation output. In applications where interference is superimposed on the I/Q input signals, the invention improves the detection capability over automatic gain control (AGC) normalization methods.
摘要翻译： 本发明一般涉及无线通信领域，更具体地说，涉及用于检测数字接收机中接收的数据分组的存在的方法和设备。 本发明提出了一种简化的相关方法，通过消除对振幅波动的依赖性，同时保持相位相关性。 关键进步涉及将复数正交幅度调制（QAM）前导码映射到量化相移键控（PSK）星座，然后应用于匹配复合相关器。 所提出的过程基本上“幅化归一化”输入信号，而不需要与分频器相关联的使用或复杂性。 这种简化的归一化方案使得分组检测算法对于输入信号中的幅度变化是鲁棒的，同时仍然允许良好的相关输出。 在I / Q输入信号上叠加干扰的应用中，本发明改进了自动增益控制（AGC）归一化方法的检测能力。
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公开(公告)号：US20090285334A1
公开(公告)日：2009-11-19
申请号：US12508544
申请日：2009-07-23
申请人： Neil Birkett , Trevor Yensen , Phil Guillemette
发明人： Neil Birkett , Trevor Yensen , Phil Guillemette
IPC分类号： H04L25/06
摘要： The invention relates generally to the field of wireless communications and more particularly to a method of and device for detecting the presence of a received data packet in a digital receiver. The present invention proposes a simplified method of correlation by removing dependency on the amplitude fluctuations while at the same time maintaining phase relevancy. The key advancement involves mapping the complex quadrature amplitude modulation (QAM) preamble to a quantized phase shift keying (PSK) constellation before application to a matched complex correlator. The proposed process essentially “amplitude normalizes” the input signal without the use or complexity associated with a divider. This simplified normalization scheme makes the packet detection algorithm robust against amplitude variations in the input signal, while still allowing for good correlation output. In applications where interference is superimposed on the I/Q input signals, the invention improves the detection capability over automatic gain control (AGC) normalization methods.
摘要翻译： 本发明一般涉及无线通信领域，更具体地说，涉及用于检测数字接收机中接收的数据分组的存在的方法和设备。 本发明提出了一种简化的相关方法，通过消除对振幅波动的依赖性，同时保持相位相关性。 关键进步涉及将复数正交幅度调制（QAM）前导码映射到量化相移键控（PSK）星座，然后应用于匹配复合相关器。 所提出的过程基本上“幅化归一化”输入信号，而不需要与分频器相关联的使用或复杂性。 这种简化的归一化方案使得分组检测算法对于输入信号中的幅度变化是鲁棒的，同时仍然允许良好的相关输出。 在I / Q输入信号上叠加干扰的应用中，本发明改进了自动增益控制（AGC）归一化方法的检测能力。
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公开(公告)号：US20060240790A1
公开(公告)日：2006-10-26
申请号：US11389406
申请日：2006-03-24
申请人： Paul Timmis , Michael Brown , Andrew Munro , Theo Pantazopoulos , Jeffrey Lariviere , Trevor Yensen , Niclas Lewis
发明人： Paul Timmis , Michael Brown , Andrew Munro , Theo Pantazopoulos , Jeffrey Lariviere , Trevor Yensen , Niclas Lewis
CPC分类号： H04B1/0343 , H04B1/034 , H04B1/0483 , H04K3/41 , H04K3/42 , H04K3/43 , H04K3/44 , H04K2203/34
摘要： A wireless transmitter for generating and transmitting wireless signals comprises a main unit and a plurality of auxiliary units, each having an outer casing and a fastening mechanism for connecting the casing of each auxiliary unit to that of the main unit. The main unit includes a signal generator for generating a plurality of carrier signals simultaneously and an interface for transmitting a carrier signal to each of the auxiliary units when connected thereto. Each auxiliary unit comprises a power amplifier and an optional upconverter, and a connector for connecting an antenna thereto. The signal generator of the main unit is configurable to generate different predetermined waveforms which are received through a communication interface. The transmitter unit is portable and a coupling mechanism is provided to lock the transmitter onto a backpack support.
摘要翻译： 用于生成和发送无线信号的无线发射机包括主单元和多个辅助单元，每个辅助单元具有外壳和用于将每个辅助单元的壳体与主单元的壳体连接的紧固机构。 主单元包括用于同时产生多个载波信号的信号发生器和用于当连接到每个辅助单元时将载波信号发送到各个辅助单元的接口。 每个辅助单元包括功率放大器和可选的上变频器，以及用于将天线连接到其上的连接器。 主单元的信号发生器可配置为产生通过通信接口接收的不同预定波形。 发射器单元是便携式的，并且提供耦合机构以将发射器锁定到背包支架上。
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公开(公告)号：US07567631B2
公开(公告)日：2009-07-28
申请号：US10661943
申请日：2003-09-12
申请人： Neil Birkett , Trevor Yensen , Phil Guillemette
发明人： Neil Birkett , Trevor Yensen , Phil Guillemette
IPC分类号： H03D3/22
摘要： The invention relates generally to the field of wireless communications and more particularly to a method of and device for detecting the presence of a received data packet in a digital receiver. The present invention proposes a simplified method of correlation by removing dependency on the amplitude fluctuations while at the same time maintaining phase relevancy. The key advancement involves mapping the complex quadrature amplitude modulation (QAM) preamble to a quantized phase shift keying (PSK) constellation before application to a matched complex correlator. The proposed process essentially “amplitude normalizes” the input signal without the use or complexity associated with a divider. This simplified normalization scheme makes the packet detection algorithm robust against amplitude variations in the input signal, while still allowing for good correlation output. In applications where interference is superimposed on the I/Q input signals, the invention improves the detection capability over automatic gain control (AGC) normalization methods.
摘要翻译： 本发明一般涉及无线通信领域，更具体地说，涉及用于检测数字接收机中接收的数据分组的存在的方法和设备。 本发明提出了一种简化的相关方法，通过消除对振幅波动的依赖性，同时保持相位相关性。 关键进步涉及将复数正交幅度调制（QAM）前导码映射到量化相移键控（PSK）星座，然后应用于匹配复合相关器。 所提出的过程基本上“幅化归一化”输入信号，而不需要与分频器相关联的使用或复杂性。 这种简化的归一化方案使得分组检测算法对于输入信号中的幅度变化是鲁棒的，同时仍然允许良好的相关输出。 在I / Q输入信号上叠加干扰的应用中，本发明改进了自动增益控制（AGC）归一化方法的检测能力。
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公开(公告)号：US20050058227A1
公开(公告)日：2005-03-17
申请号：US10661943
申请日：2003-09-12
申请人： Neil Birkett , Trevor Yensen , Phil Guillemette
发明人： Neil Birkett , Trevor Yensen , Phil Guillemette
摘要： The invention relates generally to the field of wireless communications and more particularly to a method of and device for detecting the presence of a received data packet in a digital receiver. The present invention proposes a simplified method of correlation by removing dependency on the amplitude fluctuations while at the same time maintaining phase relevancy. The key advancement involves mapping the complex quadrature amplitude modulation (QAM) preamble to a quantized phase shift keying (PSK) constellation before application to a matched complex correlator. The proposed process essentially “amplitude normalizes” the input signal without the use or complexity associated with a divider. This simplified normalization scheme makes the packet detection algorithm robust against amplitude variations in the input signal, while still allowing for good correlation output. In applications where interference is superimposed on the I/Q input signals, the invention improves the detection capability over automatic gain control (AGC) normalization methods.
摘要翻译： 本发明一般涉及无线通信领域，更具体地说，涉及用于检测数字接收机中接收的数据分组的存在的方法和设备。 本发明提出了一种简化的相关方法，通过消除对振幅波动的依赖性，同时保持相位相关性。 关键进步涉及将复数正交幅度调制（QAM）前导码映射到量化相移键控（PSK）星座，然后应用于匹配复合相关器。 所提出的过程基本上“幅化归一化”输入信号，而不需要与分频器相关联的使用或复杂性。 这种简化的归一化方案使得分组检测算法对于输入信号中的幅度变化是鲁棒的，同时仍然允许良好的相关输出。 在I / Q输入信号上叠加干扰的应用中，本发明改进了自动增益控制（AGC）归一化方法的检测能力。
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