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61. 发明申请

US20120051454A1 Phase rotation for preambles within multiple user, multiple access, and/or MIMO wireless communications 有权
标题翻译：在多用户，多路访问和/或MIMO无线通信中的前导码的相位旋转
公开(公告)号：US20120051454A1
公开(公告)日：2012-03-01
申请号：US13217830
申请日：2011-08-25
申请人： Jun Zheng , Min Chuin Hoo , Vinko Erceg
发明人： Jun Zheng , Min Chuin Hoo , Vinko Erceg
IPC分类号： H04L27/00
CPC分类号： H04L27/227 , H04B7/084 , H04L5/0026 , H04L5/0048 , H04L25/03866 , H04L27/20 , H04L27/2613 , H04L27/2621
摘要： Phase rotation for preambles within multiple user, multiple access, and/or MIMO wireless communications. An appropriately designed phase rotation vector and/or appropriately designed cyclic shift delays (CSDs) are applied to respective sub-band components of the preamble. With appropriately designed CSDs, certain fields within the preamble are not modified. For example, a legacy short training field (L-STF) of the preamble is not changed when using appropriately designed CSDs. The respective CSDs may be implemented as integer multiples of a common CSD (e.g., 0×CSD, 1×CSD, 2×CSD, etc. such that one of the values of such a CSD vector may be zero [0], another may be the common CSD itself, etc.). Also, by employing an appropriately designed phase rotation vector and integer multiples of a CSD to a preamble, the respective peak to average power ratio (PAPR) between different respective fields within the preamble may be minimized.
摘要翻译：在多用户，多路访问和/或MIMO无线通信中的前导码的相位旋转。将适当设计的相位旋转矢量和/或适当设计的循环移位延迟（CSD）应用于前导码的各个子带分量。通过适当设计的CSD，前导码中的某些字段不会被修改。例如，使用适当设计的CSD时，前导码的传统短训练字段（L-STF）不会改变。相应的CSD可以实现为公共CSD的整数倍（例如，0×CSD，1×CSD，2×CSD等，使得这样的CSD向量的值之一可以为零[0]，另一个可以成为常见的CSD本身等）。此外，通过将适当设计的相位旋转向量和CSD的整数倍应用于前同步码，可以使前导码内的不同相应场之间的相应峰均功率比（PAPR）最小化。

62. 发明授权

US08121567B2 Double search algorithm of user group selection for multiuser MIMO downlink transmission 有权
标题翻译：用户组选择双用户MIMO下行链路传输的双重搜索算法
公开(公告)号：US08121567B2
公开(公告)日：2012-02-21
申请号：US13037611
申请日：2011-03-01
申请人： Jun Zheng , Chengjin Zhang , Severine Catreux-Erceg , Vinko Erceg , Pieter Roux , Pieter van Rooyen
发明人： Jun Zheng , Chengjin Zhang , Severine Catreux-Erceg , Vinko Erceg , Pieter Roux , Pieter van Rooyen
IPC分类号： H04B1/18
CPC分类号： H04B7/0697 , H04B7/0452 , H04B7/0626
摘要： A method and system for a double search algorithm of user group selection for multiuser MIMO downlink transmission are provided. The use of optimal brute-force user group selection may require high computational expense. A first search operation may be based on a first user having a channel gain greater than that of other users, while a second search operation may be based on a second user having a channel gain greater than that of the remaining users. A maximized system capacity may be determined based on the maximized system capacities determined in the first and second search loop. A receiver pair associated with the maximized system capacity may be selected as the user group. The double search algorithm may reduce the computational complexity while achieving performances that may exceed the TDMA scheme and be similar to that of systems with ideal CSI at the transmitter.
摘要翻译：提供了一种用于多用户MIMO下行链路传输的用户组选择双重搜索算法的方法和系统。使用最佳暴力用户组选择可能需要较高的计算费用。第一搜索操作可以基于具有大于其他用户的信道增益的信道增益的第一用户，而第二搜索操作可以基于具有大于剩余用户的信道增益的信道增益的第二用户。可以基于在第一和第二搜索循环中确定的最大化的系统容量来确定最大化的系统容量。可以选择与最大系统容量相关联的接收机对作为用户组。双重搜索算法可以降低计算复杂度，同时实现可能超过TDMA方案的性能，并且类似于在发射机处具有理想CSI的系统的性能。

63. 发明申请

US20110305194A1 Legacy cyclic shift delay (CSD) for orthogonal frequency division multiplexing (OFDM) signaling within multiple user, multiple access, and/or MIMO wireless communications 有权
标题翻译：用于多用户，多址和/或MIMO无线通信中的正交频分复用（OFDM）信令的传统循环移位延迟（CSD）
公开(公告)号：US20110305194A1
公开(公告)日：2011-12-15
申请号：US13073775
申请日：2011-03-28
申请人： Jun Zheng , Vinko Erceg
发明人： Jun Zheng , Vinko Erceg
IPC分类号： H04W40/00
CPC分类号： H04B7/0671 , H04B7/0452 , H04B7/0691 , H04W52/42
摘要： Legacy cyclic shift delay (CSD) for use within multiple user, multiple access, and/or MIMO wireless communications. Appropriately designed CSD is applied to communications in wireless communication systems thereby ensuring a minimized power error difference between respective portions of a packet transmitted therein. Such respective portions of the packet may be portions of the packet's preamble. For example, the first and second portions may be a legacy short training field (L-STF) and a very high throughput short training field (VHT-STF). By applying such appropriately designed CSD to a packet, a wireless communication device receiving a signal corresponding to that packet need not perform extra or very significant backoff (e.g., with respect to a signal subsequent to automatic gain control (AGC) processing) thereby simplifying signal processing and potentially also reducing a total number of effective analog to digital converter (ADC) bits needed to represent a digitally sampled version of that signal.
摘要翻译：在多用户，多址和/或MIMO无线通信中使用的传统循环移位延迟（CSD）。将适当设计的CSD应用于无线通信系统中的通信，从而确保在其中发送的分组的各个部分之间的功率误差最小化。分组的这些各个部分可以是分组的前同步码的部分。例如，第一和第二部分可以是传统短训练场（L-STF）和非常高吞吐量的短训练场（VHT-STF）。通过将这种适当设计的CSD应用到分组，接收与该分组相对应的信号的无线通信设备不需要执行额外或非常显着的退避（例如，相对于自动增益控制（AGC）处理之后的信号），从而简化信号处理并潜在地减少用于表示该信号的数字采样版本所需的有效模/数转换器（ADC）位的总数。

64. 发明申请

US20070066229A1 Method and system for finding a threshold for semi-orthogonal user group selection in multiuser MIMO downlink transmission 有权
标题翻译：用于在多用户MIMO下行链路传输中找到用于半正交用户组选择的阈值的方法和系统
公开(公告)号：US20070066229A1
公开(公告)日：2007-03-22
申请号：US11231557
申请日：2005-09-21
申请人： Chengjin Zhang , Jun Zheng , Vinko Erceg , Severine Catreux-Erceg , Pieter Roux , Pieter van Rooyen
发明人： Chengjin Zhang , Jun Zheng , Vinko Erceg , Severine Catreux-Erceg , Pieter Roux , Pieter van Rooyen
IPC分类号： H04B17/00 , H04B1/02 , H04B7/02
CPC分类号： H04L25/03343 , H04B7/0417 , H04B7/0439 , H04B7/0443 , H04B7/0452 , H04B7/0626 , H04B17/309 , H04L2025/03426 , H04L2025/03605
摘要： Various aspects of a method and a system for finding a threshold for semi-orthogonal user group selection in multiuser MIMO downlink transmission are presented. Aspects of a system for semi-orthogonal user group selection may include a processor that computes an orthogonality measurement between one of a plurality of signals and at least one of a remaining portion of the plurality of signals. The processor may compare each of the orthogonality measurements to a threshold orthogonality value based on a computed probability. The processor may select a user group, based on the threshold orthogonality value, including one of the plurality of signals and one or more signals selected from the remaining portion of the plurality of signals.
摘要翻译：提出了一种用于在多用户MIMO下行链路传输中找到用于半正交用户组选择的阈值的方法和系统的各个方面。用于半正交用户组选择的系统的方面可以包括计算多个信号中的一个信号与多个信号的剩余部分中的至少一个之间的正交性测量的处理器。处理器可以基于所计算的概率将每个正交性测量值与阈值正交性值进行比较。处理器可以基于包括多个信号中的一个和从多个信号的剩余部分中选择的一个或多个信号的阈值正交性值来选择用户组。

65. 发明授权

US08619676B2 Legacy cyclic shift delay (CSD) for orthogonal frequency division multiplexing (OFDM) signaling within multiple user, multiple access, and/or MIMO wireless communications 有权
标题翻译：用于多用户，多址和/或MIMO无线通信中的正交频分复用（OFDM）信令的传统循环移位延迟（CSD）
公开(公告)号：US08619676B2
公开(公告)日：2013-12-31
申请号：US13073775
申请日：2011-03-28
申请人： Jun Zheng , Vinko Erceg
发明人： Jun Zheng , Vinko Erceg
IPC分类号： H04W4/00
CPC分类号： H04B7/0671 , H04B7/0452 , H04B7/0691 , H04W52/42
摘要： Legacy cyclic shift delay (CSD) for use within multiple user, multiple access, and/or MIMO wireless communications. Appropriately designed CSD is applied to communications in wireless communication systems thereby ensuring a minimized power error difference between respective portions of a packet transmitted therein. Such respective portions of the packet may be portions of the packet's preamble. For example, the first and second portions may be a legacy short training field (L-STF) and a very high throughput short training field (VHT-STF). By applying such appropriately designed CSD to a packet, a wireless communication device receiving a signal corresponding to that packet need not perform extra or very significant backoff (e.g., with respect to a signal subsequent to automatic gain control (AGC) processing) thereby simplifying signal processing and potentially also reducing a total number of effective analog to digital converter (ADC) bits needed to represent a digitally sampled version of that signal.
摘要翻译：在多用户，多址和/或MIMO无线通信中使用的传统循环移位延迟（CSD）。将适当设计的CSD应用于无线通信系统中的通信，从而确保在其中发送的分组的各个部分之间的功率误差最小化。分组的这些各个部分可以是分组的前同步码的部分。例如，第一和第二部分可以是传统短训练场（L-STF）和非常高吞吐量的短训练场（VHT-STF）。通过将这种适当设计的CSD应用到分组，接收与该分组相对应的信号的无线通信设备不需要执行额外或非常显着的退避（例如，相对于自动增益控制（AGC）处理之后的信号），从而简化信号处理并潜在地减少用于表示该信号的数字采样版本所需的有效模/数转换器（ADC）位的总数。

66. 发明授权

US08619655B2 Cyclic shift delay (CSD) short training field (STF) for orthogonal frequency division multiplexing (OFDM) signaling within multiple user, multiple access, and/or MIMO wireless communicaitons 有权
标题翻译：用于多用户，多访问和/或MIMO无线通信中的正交频分复用（OFDM）信令的循环移位延迟（CSD）短训练场（STF）
公开(公告)号：US08619655B2
公开(公告)日：2013-12-31
申请号：US13073716
申请日：2011-03-28
申请人： Jun Zheng , Vinko Erceg
发明人： Jun Zheng , Vinko Erceg
IPC分类号： H04W4/00
CPC分类号： H04B7/0671 , H04W52/16 , H04W52/42 , Y02D70/00
摘要： Cyclic shift delay (CSD) short training field (STF) for use within multiple user, multiple access, and/or MIMO wireless communications. Appropriately designed CSD STF is applied to communications in wireless communication systems thereby ensuring a minimized power error difference between respective portions of a packet transmitted therein. A first portion of the packet may be a short training field (STF) and a second portion of the packet may be a payload (e.g., a data portion). By applying such appropriately designed CSD STF to a packet, a wireless communication device that receives a signal corresponding to that packet need not perform extra or very significant backoff (e.g., with respect to a signal subsequent to automatic gain control (AGC) processing) thereby simplifying processing of that signal and potentially also reducing a total number of effective analog to digital converter (ADC) bits needed to represent a digitally sampled version of that signal.
摘要翻译：用于多用户，多路访问和/或MIMO无线通信的循环移位延迟（CSD）短训练场（STF）。将适当设计的CSD STF应用于无线通信系统中的通信，从而确保其中发送的分组的各个部分之间的功率误差最小化。分组的第一部分可以是短训练场（STF），分组的第二部分可以是有效载荷（例如，数据部分）。通过将这种适当设计的CSD STF应用于分组，接收对应于该分组的信号的无线通信设备不需要执行额外或非常显着的退避（例如，相对于自动增益控制（AGC）处理之后的信号），从而简化了该信号的处理，并且潜在地减少了表示该信号的数字采样版本所需的有效模/数转换器（ADC）位的总数。

67. 发明授权

US08284769B2 Method and system for a range reduction scheme for user selection in a multiuser MIMO downlink transmission 有权
标题翻译：用于多用户MIMO下行链路传输中的用户选择的范围缩减方案的方法和系统
公开(公告)号：US08284769B2
公开(公告)日：2012-10-09
申请号：US12951577
申请日：2010-11-22
申请人： Chengjin Zhang , Jun Zheng , Vinko Erceg , Severine Catreux-Erceg , Pieter Roux , Pieter van Rooyen
发明人： Chengjin Zhang , Jun Zheng , Vinko Erceg , Severine Catreux-Erceg , Pieter Roux , Pieter van Rooyen
IPC分类号： H04W4/00
CPC分类号： H04B7/0452 , H04B17/382 , H04W52/42
摘要： Various aspects of a method and a system for a range reduction scheme for user selection in a multiuser MIMO downlink transmission are presented. Aspects of a system for range reduction may comprise a range reduction processor that determines a plurality of channel measurements corresponding to a plurality of signals. The range reduction processor may compute a plurality of channel capacities based on the channel measurements corresponding to a subset of the plurality of signals having channel gain that is greater than a remaining portion of the plurality of signals. Aspects of a method may comprise determining a plurality of channel measurements corresponding to a plurality of signals, and computing a plurality of channel capacities based on said channel measurements corresponding to a subset of the plurality of signals having a channel gain that is greater than a remaining portion of the plurality of signals.
摘要翻译：提出了一种用于多用户MIMO下行链路传输中的用户选择的范围缩减方案的方法和系统的各个方面。用于范围缩小的系统的方面可以包括范围缩小处理器，其确定对应于多个信号的多个信道测量。范围缩小处理器可以基于与具有大于多个信号的剩余部分的信道增益的多个信号的子集相对应的信道测量来计算多个信道容量。方法的方面可以包括：确定对应于多个信号的多个信道测量，以及基于与多个信号的子集相对应的所述信道测量来计算多个信道容量，该信道测量具有大于剩余的信道增益的信道增益部分信号。

68. 发明申请

US20110070913A1 Method and System for a Range Reduction Scheme for User Selection in a Multiuser MIMO Downlink Transmission 有权
标题翻译：用于多用户MIMO下行链路传输中的用户选择的范围缩减方案的方法和系统
公开(公告)号：US20110070913A1
公开(公告)日：2011-03-24
申请号：US12951577
申请日：2010-11-22
申请人： Chengjin Zhang , Jun Zheng , Vinko Erceg , Severine Catreux-Erceg , Pieter Roux , Pieter van Rooyen
发明人： Chengjin Zhang , Jun Zheng , Vinko Erceg , Severine Catreux-Erceg , Pieter Roux , Pieter van Rooyen
IPC分类号： H04W28/02
CPC分类号： H04B7/0452 , H04B17/382 , H04W52/42
摘要： Various aspects of a method and a system for a range reduction scheme for user selection in a multiuser MIMO downlink transmission are presented. Aspects of a system for range reduction may comprise a range reduction processor that determines a plurality of channel measurements corresponding to a plurality of signals. The range reduction processor may compute a plurality of channel capacities based on the channel measurements corresponding to a subset of the plurality of signals having channel gain that is greater than a remaining portion of the plurality of signals. Aspects of a method may comprise determining a plurality of channel measurements corresponding to a plurality of signals, and computing a plurality of channel capacities based on said channel measurements corresponding to a subset of the plurality of signals having a channel gain that is greater than a remaining portion of the plurality of signals.
摘要翻译：提出了一种用于多用户MIMO下行链路传输中的用户选择的范围缩减方案的方法和系统的各个方面。用于范围缩小的系统的方面可以包括范围缩小处理器，其确定对应于多个信号的多个信道测量。范围缩小处理器可以基于与具有大于多个信号的剩余部分的信道增益的多个信号的子集相对应的信道测量来计算多个信道容量。方法的方面可以包括：确定对应于多个信号的多个信道测量，以及基于与多个信号的子集相对应的所述信道测量来计算多个信道容量，该信道测量具有大于剩余的信道增益的信道增益部分信号。

69. 发明申请

US20110305178A1 Cyclic shift delay (CSD) short training field (STF) for orthogonal frequency division multiplexing (OFDM) signaling within multiple user, multiple access, and/or MIMO wireless communications 有权
标题翻译：用于多用户，多访问和/或MIMO无线通信中的正交频分复用（OFDM）信令的循环移位延迟（CSD）短训练场（STF）
公开(公告)号：US20110305178A1
公开(公告)日：2011-12-15
申请号：US13073716
申请日：2011-03-28
申请人： Jun Zheng , Vinko Erceg
发明人： Jun Zheng , Vinko Erceg
IPC分类号： G08C17/00
CPC分类号： H04B7/0671 , H04W52/16 , H04W52/42 , Y02D70/00
摘要： Cyclic shift delay (CSD) short training field (STF) for use within multiple user, multiple access, and/or MIMO wireless communications. Appropriately designed CSD STF is applied to communications in wireless communication systems thereby ensuring a minimized power error difference between respective portions of a packet transmitted therein. A first portion of the packet may be a short training field (STF) and a second portion of the packet may be a payload (e.g., a data portion). By applying such appropriately designed CSD STF to a packet, a wireless communication device that receives a signal corresponding to that packet need not perform extra or very significant backoff (e.g., with respect to a signal subsequent to automatic gain control (AGC) processing) thereby simplifying processing of that signal and potentially also reducing a total number of effective analog to digital converter (ADC) bits needed to represent a digitally sampled version of that signal.
摘要翻译：用于多用户，多路访问和/或MIMO无线通信的循环移位延迟（CSD）短训练场（STF）。将适当设计的CSD STF应用于无线通信系统中的通信，从而确保其中发送的分组的各个部分之间的功率误差最小化。分组的第一部分可以是短训练场（STF），分组的第二部分可以是有效载荷（例如，数据部分）。通过将这种适当设计的CSD STF应用于分组，接收对应于该分组的信号的无线通信设备不需要执行额外或非常显着的退避（例如，相对于自动增益控制（AGC）处理之后的信号），从而简化了该信号的处理，并且潜在地减少了表示该信号的数字采样版本所需的有效模/数转换器（ADC）位的总数。

70. 发明申请

US20070066225A1 Double search algorithm of user group selection for multiuser MIMO downlink transmission 有权
标题翻译：用户组选择双用户MIMO下行链路传输的双重搜索算法
公开(公告)号：US20070066225A1
公开(公告)日：2007-03-22
申请号：US11231501
申请日：2005-09-21
申请人： Jun Zheng , Chengjin Zhang , Severine Catreux-Erceg , Vinko Erceg , Pieter Roux , Pieter Rooyen
发明人： Jun Zheng , Chengjin Zhang , Severine Catreux-Erceg , Vinko Erceg , Pieter Roux , Pieter Rooyen
IPC分类号： H04B17/00 , H04B7/00
CPC分类号： H04B7/0697 , H04B7/0452 , H04B7/0626
摘要： A method and system for a double search algorithm of user group selection for multiuser MIMO downlink transmission are provided. The use of optimal brute-force user group selection may require high computational expense. A first search operation may be based on a first user having a channel gain greater than that of other users, while a second search operation may be based on a second user having a channel gain greater than that of the remaining users. A maximized system capacity may be determined based on the maximized system capacities determined in the first and second search loop. A receiver pair associated with the maximized system capacity may be selected as the user group. The double search algorithm may reduce the computational complexity while achieving performances that may exceed the TDMA scheme and be similar to that of systems with ideal CSI at the transmitter.
摘要翻译：提供了一种用于多用户MIMO下行链路传输的用户组选择双重搜索算法的方法和系统。使用最佳暴力用户组选择可能需要较高的计算费用。第一搜索操作可以基于具有大于其他用户的信道增益的信道增益的第一用户，而第二搜索操作可以基于具有大于剩余用户的信道增益的信道增益的第二用户。可以基于在第一和第二搜索循环中确定的最大化的系统容量来确定最大化的系统容量。可以选择与最大系统容量相关联的接收机对作为用户组。双重搜索算法可以降低计算复杂度，同时实现可能超过TDMA方案的性能，并且类似于在发射机处具有理想CSI的系统的性能。

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