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1. 发明授权

US07983710B2 Method of coordinated wireless downlink transmission 有权
标题翻译：协调无线下行传输方式
公开(公告)号：US07983710B2
公开(公告)日：2011-07-19
申请号：US11809354
申请日：2007-05-31
申请人： Gerard J. Foschini
发明人： Gerard J. Foschini
IPC分类号： H04B7/00
CPC分类号： H04W16/12 , H04W52/267 , H04W52/367 , H04W52/42
摘要： To reduce intercell interference, a method of coherently coordinated downlink transmission in a wireless network involves coordinating transmissions from a plurality of base stations to a plurality of wireless units, for coherent, reinforced reception of the transmitted signals at the wireless units. Thus, transmissions from the base stations are coordinated such that signals received at each wireless unit's particular location constructively add, but cancel out at other locations. The signals are generated based on a zero-forcing operation, e.g., by applying zero-forcing complex antenna weight vectors to data symbols designated for transmission to the wireless units. For fairness, the signals are transmitted at no less than a guaranteed common rate. A convex optimization problem (which incorporates a per-base station power constraint or a per-transmission antenna power constraint) is solved to maximize the guaranteed common rate. Dirty paper coding may also be employed.
摘要翻译：为了减少小区间干扰，在无线网络中相干协调的下行链路传输的方法包括协调从多个基站到多个无线单元的传输，用于在无线单元处相干强化地接收所传输的信号。因此，来自基站的传输被协调，使得在每个无线单元的特定位置处接收的信号建设性地添加但在其他位置抵消。基于迫零操作来产生信号，例如通过将零强制复数天线加权矢量应用于指定用于传输到无线单元的数据符号。为了公平起见，信号以不低于保证的通用速率传输。解决了凸优化问题（其包含每基站功率约束或每发射天线功率约束）以使保证的公共速率最大化。也可以使用脏纸编码。

2. 发明申请

US20080299981A1 Method of coordinated wireless downlink transmission 有权
标题翻译：协调无线下行传输方式
公开(公告)号：US20080299981A1
公开(公告)日：2008-12-04
申请号：US11809354
申请日：2007-05-31
申请人： Gerard J. Foschini
发明人： Gerard J. Foschini
IPC分类号： H04Q7/20
CPC分类号： H04W16/12 , H04W52/267 , H04W52/367 , H04W52/42
摘要： To reduce intercell interference, a method of coherently coordinated downlink transmission in a wireless network involves coordinating transmissions from a plurality of base stations to a plurality of wireless units, for coherent, reinforced reception of the transmitted signals at the wireless units. Thus, transmissions from the base stations are coordinated such that signals received at each wireless unit's particular location constructively add, but cancel out at other locations. The signals are generated based on a zero-forcing operation, e.g., by applying zero-forcing complex antenna weight vectors to data symbols designated for transmission to the wireless units. For fairness, the signals are transmitted at no less than a guaranteed common rate. A convex optimization problem (which incorporates a per-base station power constraint or a per-transmission antenna power constraint) is solved to maximize the guaranteed common rate. Dirty paper coding may also be employed.
摘要翻译：为了减少小区间干扰，在无线网络中相干协调的下行链路传输的方法包括协调从多个基站到多个无线单元的传输，用于在无线单元处相干强化地接收所传输的信号。因此，来自基站的传输被协调，使得在每个无线单元的特定位置处接收的信号建设性地添加但在其他位置抵消。基于迫零操作来产生信号，例如通过将零强制复数天线加权矢量应用于指定用于传输到无线单元的数据符号。为了公平起见，信号以不低于保证的通用速率传输。解决了凸优化问题（其包含每基站功率约束或每发射天线功率约束）以使保证的公共速率最大化。也可以使用脏纸编码。

3. 发明申请

US20120224861A1 DYNAMIC SPATIAL-MODE ALLOCATION IN AN UNDER-ADDRESSED OPTICAL MIMO SYSTEM 有权
标题翻译：在未来的光学MIMO系统中的动态空间模式分配
公开(公告)号：US20120224861A1
公开(公告)日：2012-09-06
申请号：US13332588
申请日：2011-12-21
申请人： Peter J. Winzer , Gerard J. Foschini
发明人： Peter J. Winzer , Gerard J. Foschini
IPC分类号： H04B10/12
CPC分类号： G02B6/14 , H04B10/2581 , H04J14/04 , H04L1/004
摘要： The outage probability in an under-addressed optical MIMO system may be reduced by configuring a spatial-mode coupler at a transmitter and/or a spatial-mode separator at a receiver to dynamically change its spatial-mode configuration on a time scale that is shorter than the channel coherence time. Provided that the MIMO system employs an FEC code that has a sufficient error-correcting capacity for correcting the amount of errors corresponding to an average state of the MIMO channel established between the transmitter and receiver, this relatively fast dynamic change tends to reduce the frequency of events during which the number of errors per FEC-encoded block of data exceeds the error-correcting capacity of the FEC code.
摘要翻译：可以通过在接收机处的发射机和/或空间模式分离器处配置空间模式耦合器以在较短的时间尺度上动态地改变其空间模式配置来减少处理不足的光MIMO系统中的中断概率比通道一致性时间。假设MIMO系统采用具有足够的纠错能力的FEC码来校正与在发射机和接收机之间建立的MIMO信道的平均状态相对应的误差量，则该相对较快的动态变化趋向于降低频率每个FEC编码的数据块的错误数量超过FEC码的纠错能力的事件。

4. 发明申请

US20100150577A1 Communication System and Method With Signal Constellation 审中-公开
标题翻译：具有信号星座的通信系统和方法
公开(公告)号：US20100150577A1
公开(公告)日：2010-06-17
申请号：US12639750
申请日：2009-12-16
申请人： Rene'-Jean Essiambre , Gerard J. Foschini , Gerhard Guenter Theodor Kramer , Peter J. Winzer
发明人： Rene'-Jean Essiambre , Gerard J. Foschini , Gerhard Guenter Theodor Kramer , Peter J. Winzer
IPC分类号： H04L27/20 , H04B10/04
CPC分类号： H04B10/5053 , H04B10/5561
摘要： An example method includes modulating an optical signal using a Phase Shift Keying (PSK) signal constellation, wherein signal points of the PSK signal constellation are located on at least two rings. The first ring has a first radius r1 and a second ring has a second radius r2, wherein the first radius and second radius differ, and wherein the signal points are not located on a regular n-dimension lattice, where n is an integer. The regular n-dimension lattice is formed from a minimum number of lines parallel to an axis for each of the n-dimensions that connect ones of the signal points of the PSK signal constellation on either side of an origin of the axis. The second radius may be greater than the first radius, with the second radius a non-integer multiple of the first ring radius.
摘要翻译：示例性方法包括使用相移键控（PSK）信号星座调制光信号，其中PSK信号星座的信号点位于至少两个环上。第一环具有第一半径r1，第二环具有第二半径r2，其中第一半径和第二半径不同，并且其中信号点不位于规则的n维晶格上，其中n是整数。规则的n维格子由平行于轴线的最小数量的线形成，用于连接在轴原点的任一侧的PSK信号星座的信号点中的每一个的n维。第二半径可以大于第一半径，第二半径是第一环半径的非整数倍。

5. 发明申请

US20080268834A1 Method of grouping users to reduce interference in mimo-based wireless network 有权
标题翻译：分组用户以减少基于mimo的无线网络干扰的方法
公开(公告)号：US20080268834A1
公开(公告)日：2008-10-30
申请号：US11796328
申请日：2007-04-27
申请人： Gerard J. Foschini , Taesang Yoo
发明人： Gerard J. Foschini , Taesang Yoo
IPC分类号： H04Q7/20
CPC分类号： H04B7/043 , H04B7/0452 , H04B7/0465 , H04W52/346 , H04W72/082
摘要： In a system of MIMO communications in a wireless network, a number of wireless units are logically divided into a plurality of user groups, through operation of a semi-orthogonal user selection sub-system. For example, the user selection sub-system may implement a heuristic user selection algorithm based on near-orthogonality. Each user group is assigned a discrete transmission channel, which may be orthogonally defined in terms of frequency, time, or code. Data is transmitted over the channels (e.g., from network base stations) in a coherently coordinated manner, according to a zero-forcing beamforming operation. The system may be configured for operation in a time/frequency selective manner, e.g., over time/frequency selective fading channels. The wireless units may be allocated to the time/frequency slots based on prioritization of channel strength and considerations of fairness, in conjunction with the application of a semi-orthogonal user selection algorithm.
摘要翻译：在无线网络中的MIMO通信系统中，通过半正交用户选择子系统的操作，将多个无线单元在逻辑上划分成多个用户组。例如，用户选择子系统可以实现基于近正交性的启发式用户选择算法。每个用户组被分配离散的传输信道，其可以根据频率，时间或代码来正交地定义。根据迫零波束成形操作，以相干协调的方式通过信道（例如，来自网络基站）发送数据。该系统可以被配置为以时间/频率选择性方式操作，例如，随着时间/频率选择性衰落信道。结合半正交用户选择算法的应用，无线单元可以基于信道强度的优先级和公平性的考虑来分配给时间/频率时隙。

6. 发明授权

US5276730A Access method for distributed dynamic channel allocation in microcells 失效
标题翻译：微小区分布式动态信道分配的接入方法
公开(公告)号：US5276730A
公开(公告)日：1994-01-04
申请号：US876554
申请日：1992-04-30
申请人： Leonard J. Cimini, Jr. , Gerard J. Foschini , Chih-Lin I
发明人： Leonard J. Cimini, Jr. , Gerard J. Foschini , Chih-Lin I
IPC分类号： H04W16/10 , H04M11/00 , H04Q7/00
CPC分类号： H04W16/10 , H04W24/00 , H04W72/00 , H04W72/02 , H04W72/04 , H04W72/082
摘要： A method of providing local autonomous control of channel allocation of a cellular telecommunications network. In one prior art method, which can be identified as the timid method, a channel is selected for use by an incoming user if it is not being used by any of the cells which surround it. Otherwise, another channel is selected according to the same rule. The channels are tested in random order and a call is blocked if all of the channels are in use. For heavy loading, because of the vagaries of the way the demand for channels occurs, this method can result in inefficient channel deployment. In another method, which can be identified as the aggressive method, a channel is selected for use by an incoming user even if that channel is currently being used in the surrounding cells. If the channel is in use, the incoming user "bumps" the current user off the channel in the timid mode. The "bumped" user is then forced to find and use another channel. With this method, an unreasonable number of reconfigurations and an unreasonable number of dropped calls can result, especially when the system is heavily loaded. This invention integrates the aggressive and timid methods to obtain the best of both: the former's improved performance and the latter's stability. Initially, the timid mode is used to look for a channel with acceptable interference. However, if the timid mode fails to obtain a channel, the call is not necessarily blocked. Instead, the mode of operation becomes more aggressive and the first channel tested that has only modest interference is taken. The "bumped" user on that channel then attempts to locate another channel. If the "bumped" user is unsuccessful, the incoming user must then retreat and is blocked.
摘要翻译：一种提供蜂窝电信网络的信道分配的本地自主控制的方法。在可以被识别为胆小的方法的一种现有技术方法中，如果入口用户没有被其周围的任何小区使用，则选择频道用于使用。否则，根据相同的规则选择另一个频道。频道按照随机顺序进行测试，如果所有频道都在使用中，通话将被阻止。对于繁重的负荷，由于频道需求的变化，这种方式可能导致信道部署效率低下。在可以被识别为侵略性方法的另一种方法中，选择频道以供入局用户使用，即使该频道当前正在周围小区中使用。如果频道正在使用中，进入的用户将以当前用户的“嘀嗒”模式将“当前用户”从“通道”中消失。然后，“碰撞”用户被迫找到并使用另一个频道。使用这种方法，可能导致不合理的数量的重新配置和不合理的掉话数量，特别是当系统负载过重时。本发明整合了积极和胆小的方法，以获得最佳的两者：前者的改进性能和后者的稳定性。最初，胆小的模式用于寻找具有可接受干扰的信道。但是，如果没有获得通道，则呼叫不一定被阻止。相反，操作模式变得更加积极，并且仅采用适度干扰的第一通道测试。该通道上的“碰撞”用户尝试找到另一个频道。如果“碰撞”用户不成功，则进入的用户必须撤退并被阻止。

7. 发明授权

US08705913B2 Intra-link spatial-mode mixing in an under-addressed optical MIMO system 有权
标题翻译：在欠寻址光MIMO系统中的链路内空间模式混合
公开(公告)号：US08705913B2
公开(公告)日：2014-04-22
申请号：US13332968
申请日：2011-12-21
申请人： Peter J. Winzer , Gerard J. Foschini
发明人： Peter J. Winzer , Gerard J. Foschini
IPC分类号： G02B6/42
CPC分类号： G02B6/14 , H04B10/2581 , H04J14/04 , H04L1/004
摘要： The outage probability in an under-addressed optical MIMO system may be reduced by configuring an intra-link optical mode mixer to dynamically change the spatial-mode mixing characteristics of the link on a time scale that is faster than the channel coherence time. Provided that the MIMO system employs an FEC code that has a sufficient error-correcting capacity for correcting the amount of errors corresponding to an average state of the MIMO channel, this relatively fast dynamic change tends to reduce the frequency of events during which the number of errors per FEC-encoded block of data exceeds the error-correcting capacity of the FEC code.
摘要翻译：可以通过配置链路内模式混合器来在比信道相干时间快的时间尺度上动态地改变链路的空间模式混合特性来减少处理不足的MIMO系统中的中断概率。假设MIMO系统采用具有足够的纠错能力的FEC码，用于校正与MIMO信道的平均状态相对应的误差量，则这种相对较快的动态变化趋向于减少事件发生频率每个FEC编码的数据块的错误超过FEC码的纠错能力。

8. 发明申请

US20120224863A1 MULTIPATH CHANNEL FOR OPTICAL SUBCARRIER MODULATION 有权
标题翻译：用于光学子载波调制的多通道
公开(公告)号：US20120224863A1
公开(公告)日：2012-09-06
申请号：US13182513
申请日：2011-07-14
申请人： Peter J. Winzer , Gerard J. Foschini
发明人： Peter J. Winzer , Gerard J. Foschini
IPC分类号： H04B10/00
CPC分类号： G02B6/14 , H04B10/2581 , H04J14/04 , H04L1/004
摘要： In a representative embodiment, a multipath channel and an optical subcarrier modulation scheme are designed in concert to cause different modulated subcarriers of the optical communication signal to become substantially uncorrelated over the aggregate signal bandwidth. Provided that the employed FEC code has sufficient error-correcting capability for average channel conditions, breakdowns in the operation of the FEC decoder and the corresponding system outages can substantially be avoided.
摘要翻译：在代表性实施例中，多路径信道和光子载波调制方案被一致地设计成使得光通信信号的不同调制副载波在聚合信号带宽上变得基本上不相关。假设所使用的FEC码对于平均信道条件具有足够的纠错能力，则可以基本上避免FEC解码器的操作故障和相应的系统中断。

9. 发明授权

US07349438B2 Formatter, method of formatting encoded symbols and wireless communication system employing the same 有权
标题翻译：格式化器，格式化编码符号的方法和使用其的无线通信系统
公开(公告)号：US07349438B2
公开(公告)日：2008-03-25
申请号：US10245233
申请日：2002-09-17
申请人： Gerard J. Foschini
发明人： Gerard J. Foschini
IPC分类号： H04J4/00
CPC分类号： H04B7/0891 , H04B7/0669 , H04L1/0656
摘要： The present invention is directed to a formatter, a method of formatting encoded symbols and a wireless communication system employing the same. In one embodiment, the formatter includes a symbol generator that provides a plurality of encoded symbols from a bit stream. The formatter also includes a symbol mapping organizer that maps the plurality of encoded symbols into information cells, each having a unique space coordinate, time coordinate and degree of freedom within a frequency band. The information cells are arranged in a parallelopiped communication resource volume.
摘要翻译：本发明涉及一种格式化器，一种格式化编码符号的方法和一种使用其的无线通信系统。在一个实施例中，格式化器包括从比特流提供多个编码符号的符号发生器。格式化器还包括将多个编码符号映射到信息单元中的符号映射管理器，每个信息单元在频带内具有唯一的空间坐标，时间坐标和自由度。信息单元被布置成平行六面体通信资源卷。

10. 发明授权

US07050510B2 Open-loop diversity technique for systems employing four transmitter antennas 有权
公开(公告)号：US07050510B2
公开(公告)日：2006-05-23
申请号：US09752637
申请日：2000-12-29
申请人： Gerard J Foschini , Constantinos B. Papadias
发明人： Gerard J Foschini , Constantinos B. Papadias
IPC分类号： H04L27/04 , H04B7/02
CPC分类号： H04L1/0065 , H04L1/0066 , H04L1/0618
摘要： When using four transmit antennas, conventional channel coding is employed for a decoupled space-time coding approach for each of a number, L, of data substreams derived from the overall source bit stream. The symbols of the data substreams, after any encoding, are processed and the resulting derivatives of the encoded data substreams, which includes at least the complex conjugate of one of the encoded symbols, are grouped to form four transmit time sequences each one spanning L symbol periods which form a transmission matrix B. Each row of the matrix corresponds to an antenna, and the elements of each row represent the samples of a temporal sequence that is emitted by the antenna in L symbol periods. When L=4 the matrix B can be arranged as follows: ⁢ T 1 ⁢ ⁢ T 2 ⁢ ⁢ T 3 ⁢ ⁢ T 4 Antenna ⁢ ⁢ 1 Antenna ⁢ ⁢ 2 Antenna ⁢ ⁢ 3 Antenna ⁢ ⁢ 4 ⁡ [ b 1 b 2 * b 3 b 4 * b 2 - b 1 * - b 4 b 3 * b 3 b 4 * - b 1 - b 2 * b 4 - b 3 * b 2 - b 1 * ] where b1, b2, b3, and b4 are the encoded symbols from the data substreams and * indicates complex conjugate.

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