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31. 发明授权

US07567621B2 Capacity based rank prediction for MIMO design 有权
标题翻译：基于容量的MIMO设计的秩预测
公开(公告)号：US07567621B2
公开(公告)日：2009-07-28
申请号：US11022347
申请日：2004-12-22
申请人： Hemanth Sampath , Tamer Kadous
发明人： Hemanth Sampath , Tamer Kadous
IPC分类号： H04B7/06
CPC分类号： H04L5/0046 , H04B17/336 , H04L1/0003 , H04L1/0009 , H04L1/0026 , H04L1/0071 , H04L1/065 , H04L1/0656 , H04L1/1812 , H04L5/0023 , H04L5/006 , H04L5/023 , H04L25/0204 , H04L25/0242 , H04L25/03343 , H04L27/2608 , H04L27/2626 , H04L2025/03426
摘要： The performance of a Single Code Word (SCW) design with low complexity MMSE receiver & rank prediction is similar to the Multiple Code Word (MCW) design with successive interference cancellation (SIC). A method of rank prediction comprises calculating MIMO channel matrices corresponding to layer transmissions for each tone, calculating signal-to-noise ratios (SNRs) for each tone based on the MIMO channel matrices, mapping the SNR for each tone to generate effective SNRs for each layer transmission, calculating additive white Gaussian noise (AWGN) capacities corresponding to the effective SNRs and maximizing an over-all spectral efficiency based on the AWGN capacities; and selecting a rank based on maximizing the over-all spectral efficiency.
摘要翻译：具有低复杂度MMSE接收机和等级预测的单码字（SCW）设计的性能类似于具有连续干扰消除（SIC）的多码字（MCW）设计。一种等级预测的方法包括：计算与每个音调的层传输相对应的MIMO信道矩阵，基于MIMO信道矩阵计算每个音调的信噪比（SNR），映射每个音调的SNR以产生每个音调的有效SNR 计算与有效SNR相对应的加性白高斯噪声（AWGN）容量，并根据AWGN容量最大化全频谱效率; 以及基于最大化全部频谱效率来选择秩。

32. 发明授权

US07428269B2 CQI and rank prediction for list sphere decoding and ML MIMO receivers 有权
标题翻译：用于列表球体解码和ML MIMO接收机的CQI和秩预测
公开(公告)号：US07428269B2
公开(公告)日：2008-09-23
申请号：US11445098
申请日：2006-05-31
申请人： Hemanth Sampath , Tamer Kadous
发明人： Hemanth Sampath , Tamer Kadous
IPC分类号： H04B7/02
CPC分类号： H04B7/0434 , H04B7/0417 , H04B7/063 , H04B7/0632 , H04L1/0003 , H04L1/0026 , H04L1/0028 , H04L1/0675 , H04L5/0053 , H04L25/03242 , H04L27/2626 , H04L27/2647 , H04L2025/03426
摘要： Systems and methodologies are described that facilitate integrating a list-sphere decoding design in a multiple input-multiple output (MIMO) wireless communication environment. According to various aspects, optimal rank selection and CQI computation for an optimal rank can be performed in conjunction with a non-linear receiver, such as a maximum likelihood (ML) MMSE receiver, a non-linear receiver with a list-sphere decoder, and the like. Optimal rank selection can be performed using a maximum rank selection protocol, a channel capacity-based protocol, or any other suitable protocol that facilitates rank selection, and CQI information can be generated based in part on effective SNRs determined with regard to a selected optimal rank.
摘要翻译：描述了有助于将列表球体解码设计集成在多输入多输出（MIMO）无线通信环境中的系统和方法。根据各方面，可以结合诸如最大似然（ML）MMSE接收机，具有列表球解码器的非线性接收机之类的非线性接收机来执行用于最优秩的最优秩选择和CQI计算，等等。可以使用最大等级选择协议，基于信道容量的协议或促进等级选择的任何其它合适的协议来执行最优等级选择，并且可以部分地基于针对所选择的最优等级确定的有效SNR来生成CQI信息。

33. 发明申请

US20080235311A1 SIMPLIFIED EQUALIZATION FOR CORRELATED CHANNELS IN OFDMA 有权
标题翻译： OFDMA中相关通道的简化均衡
公开(公告)号：US20080235311A1
公开(公告)日：2008-09-25
申请号：US12052248
申请日：2008-03-20
申请人： Petru Cristian Budianu , Hemanth Sampath , Alexei Gorokhov , Dhananjay A. Gore
发明人： Petru Cristian Budianu , Hemanth Sampath , Alexei Gorokhov , Dhananjay A. Gore
IPC分类号： G06F17/17
CPC分类号： H04L5/023 , H04L25/0232 , H04L25/0244 , H04L25/03019 , H04L27/2647 , H04L2025/03414 , H04L2025/03426
摘要： Systems and methodologies are described that facilitate equalization of received signals in a wireless communication environment. Multiple transmit and/or receive antennas and utilize MIMO technology to enhance performance. A single tile of transmitted data, including a set of modulation symbols, can be received at multiple receive antennas, resulting in multiple tiles of received modulation symbols. Corresponding modulation symbols from multiple received tiles can be processed as a function of channel and interference estimates to generate a single equalized modulation symbol. Typically, the equalization process is computationally expensive. However, the channels are highly correlated. This correlation is reflected in the channel estimates and can be utilized to reduce complex equalization operations. In particular, a subset of the equalizers can be generated based upon the equalizer function and the remainder can be generated using interpolation. In addition, the equalizer function itself can be simplified.
摘要翻译：描述了促进无线通信环境中的接收信号的均衡的系统和方法。多个发射和/或接收天线并利用MIMO技术来提高性能。可以在多个接收天线处接收包括一组调制符号的传输数据的单个瓦片，从而导致接收到的调制符号的多个瓦片。来自多个接收瓦片的相应调制符号可以作为信道和干扰估计的函数来处理，以生成单个均衡调制符号。通常，均衡过程在计算上是昂贵的。然而，这些渠道是高度相关的。该相关性反映在信道估计中，并且可以用于减少复数均衡操作。特别地，可以基于均衡器功能生成均衡器的子集，并且可以使用插值来生成余数。此外，均衡器功能本身可以简化。

34. 发明申请

US20080182585A1 DEMODULATION OF A SUBSET OF AVAILABLE LINK ASSIGNMENT BLOCKS 有权
标题翻译：可链接分配块的解析
公开(公告)号：US20080182585A1
公开(公告)日：2008-07-31
申请号：US12022085
申请日：2008-01-29
申请人： Ravi Palanki , Alexei Gorokhov , Hemanth Sampath
发明人： Ravi Palanki , Alexei Gorokhov , Hemanth Sampath
IPC分类号： H04Q7/20
CPC分类号： H04W48/12 , H04W76/27
摘要： Systems and methodologies are described that facilitate assigning indices to link assignment blocks (LABs) communicated via a downlink. Indices in a first subset are allocated to shared LABs, which are decoded by a plurality of access terminals. Indices in a second subset are assigned to unshared LABs, which are each intended for a particular recipient access terminal. Assignment of an index for each unshared LAB can be based upon a hash of an identifier corresponding to an intended recipient access terminal and/or access terminal capabilities. Moreover, an access terminal can decode LABs based upon corresponding indices. LABs with indices in a first range can be identified as shared LABs and decoded. Further, the access terminal can determine a second range of indices corresponding to unshared LABs to decode; the second range of indices includes fewer than all indices corresponding to unshared LABs in a frame sent by a base station.
摘要翻译：描述了便于将索引分配给经由下行链路传送的链路分配块（LAB）的系统和方法。第一子集中的指示被分配给由多个接入终端解码的共享LAB。第二子集中的索引被分配给未共享的LAB，每个LAB都用于特定的接收者接入终端。每个非共享LAB的索引的分配可以基于与预期接收者接入终端和/或接入终端能力相对应的标识符的散列。此外，接入终端可以基于相应的索引来解码LAB。索引在第一范围内的LAB可以被识别为共享LAB并被解码。此外，接入终端可以确定与未共享的LAB对应的索引的第二范围进行解码; 索引的第二范围包括少于由基站发送的帧中与非共享LAB相对应的全部索引。

35. 发明授权

US08238295B2 Demodulation of a subset of available link assignment blocks 有权
标题翻译：对可用链路分配块的子集进行解调
公开(公告)号：US08238295B2
公开(公告)日：2012-08-07
申请号：US12022085
申请日：2008-01-29
申请人： Ravi Palanki , Alexei Gorokhov , Hemanth Sampath
发明人： Ravi Palanki , Alexei Gorokhov , Hemanth Sampath
IPC分类号： H04W4/00
CPC分类号： H04W48/12 , H04W76/27
摘要： Systems and methodologies are described that facilitate assigning indices to link assignment blocks (LABs) communicated via a downlink. Indices in a first subset are allocated to shared LABs, which are decoded by a plurality of access terminals. Indices in a second subset are assigned to unshared LABs, which are each intended for a particular recipient access terminal. Assignment of an index for each unshared LAB can be based upon a hash of an identifier corresponding to an intended recipient access terminal and/or access terminal capabilities. Moreover, an access terminal can decode LABs based upon corresponding indices. LABs with indices in a first range can be identified as shared LABs and decoded. Further, the access terminal can determine a second range of indices corresponding to unshared LABs to decode; the second range of indices includes fewer than all indices corresponding to unshared LABs in a frame sent by a base station.
摘要翻译：描述了便于将索引分配给经由下行链路传送的链路分配块（LAB）的系统和方法。第一子集中的指示被分配给由多个接入终端解码的共享LAB。第二子集中的索引被分配给未共享的LAB，每个LAB都用于特定的接收者接入终端。每个非共享LAB的索引的分配可以基于与预期接收者接入终端和/或接入终端能力相对应的标识符的散列。此外，接入终端可以基于相应的索引来解码LAB。索引在第一范围内的LAB可以被识别为共享LAB并被解码。此外，接入终端可以确定与未共享的LAB对应的索引的第二范围进行解码; 索引的第二范围包括少于由基站发送的帧中与非共享LAB相对应的全部索引。

36. 发明申请

US20070097942A1 Varied signaling channels for a reverse link in a wireless communication system 有权
标题翻译：用于无线通信系统中的反向链路的各种信令信道
公开(公告)号：US20070097942A1
公开(公告)日：2007-05-03
申请号：US11261806
申请日：2005-10-27
申请人： Alexei Gorokhov , Aamod Khandekar , Edward Teague , Hemanth Sampath
发明人： Alexei Gorokhov , Aamod Khandekar , Edward Teague , Hemanth Sampath
IPC分类号： H04B7/216
CPC分类号： H04B7/2656
摘要： Signaling is efficiently sent on a configurable CDMA control segment. To send signaling, transmission parameters for the CDMA control segment for a serving sector are determined. These parameter may indicate the CDMA control segment size, the frames in which the CDMA control segment is sent, the signaling channels to be sent on the CDMA control segment, and so on. The enabled CDMA signaling channels for a terminal and the average transmission interval for each enabled CDMA signaling channel are determined. For each frame in which the CDMA control segment is sent, the signaling channels to be sent on the CDMA control segment in that frame are determined. The signaling for each signaling channel is processed (e.g., encoded, channelized, scaled, and scrambled). The processed signaling for all signaling channels is combined and mapped to a time-frequency region used for the CDMA control segment in the frame.
摘要翻译：在可配置的CDMA控制段上有效地发送信令。为了发送信令，确定用于服务扇区的CDMA控制段的传输参数。这些参数可以指示CDMA控制段大小，发送CDMA控制段的帧，在CDMA控制段上发送的信令信道等。确定终端的使能的CDMA信令信道和每个使能的CDMA信令信道的平均传输间隔。对于其中发送CDMA控制段的每个帧，确定要在该帧中的CDMA控制段上发送的信令信道。处理每个信令信道的信令（例如，编码，信道化，缩放和加扰）。所有信令信道的经处理的信令被组合并且被映射到帧中用于CDMA控制段的时间 - 频率区域。

37. 发明授权

US09225416B2 Varied signaling channels for a reverse link in a wireless communication system 有权
标题翻译：用于无线通信系统中的反向链路的各种信令信道
公开(公告)号：US09225416B2
公开(公告)日：2015-12-29
申请号：US11261806
申请日：2005-10-27
申请人： Alexei Gorokhov , Aamod Khandekar , Edward Harrison Teague , Hemanth Sampath
发明人： Alexei Gorokhov , Aamod Khandekar , Edward Harrison Teague , Hemanth Sampath
IPC分类号： H04J11/00 , H04B7/26
CPC分类号： H04B7/2656
摘要： Signaling is efficiently sent on a configurable CDMA control segment. To send signaling, transmission parameters for the CDMA control segment for a serving sector are determined. These parameter may indicate the CDMA control segment size, the frames in which the CDMA control segment is sent, the signaling channels to be sent on the CDMA control segment, and so on. The enabled CDMA signaling channels for a terminal and the average transmission interval for each enabled CDMA signaling channel are determined. For each frame in which the CDMA control segment is sent, the signaling channels to be sent on the CDMA control segment in that frame are determined. The signaling for each signaling channel is processed (e.g., encoded, channelized, scaled, and scrambled). The processed signaling for all signaling channels is combined and mapped to a time-frequency region used for the CDMA control segment in the frame.
摘要翻译：在可配置的CDMA控制段上有效地发送信令。为了发送信令，确定用于服务扇区的CDMA控制段的传输参数。这些参数可以指示CDMA控制段大小，发送CDMA控制段的帧，在CDMA控制段上发送的信令信道等。确定终端的使能的CDMA信令信道和每个使能的CDMA信令信道的平均传输间隔。对于其中发送CDMA控制段的每个帧，确定要在该帧中的CDMA控制段上发送的信令信道。处理每个信令信道的信令（例如，编码，信道化，缩放和加扰）。所有信令信道的经处理的信令被组合并且被映射到帧中用于CDMA控制段的时间 - 频率区域。

38. 发明授权

US08675509B2 Feedback to support restrictive reuse 有权
标题翻译：支持限制性重用的反馈
公开(公告)号：US08675509B2
公开(公告)日：2014-03-18
申请号：US12477823
申请日：2009-06-03
申请人： Hemanth Sampath , Tingfang Ji
发明人： Hemanth Sampath , Tingfang Ji
IPC分类号： H04L12/26
CPC分类号： H04W72/085 , H04L5/0048 , H04L5/0053 , H04L25/0204 , H04L25/0222 , H04L2025/03414 , H04L2025/03426 , H04L2025/03802
摘要： The scheduler in a base station needs CQI information from a terminal for all re-use sets every 5 ms. to decide on which re-use set to schedule a given terminal. For MIMO users, the problem is that the CQI cannot be reconstructed for all re-use sets, using the current design. Solution: (1) For Multiple Code Word MIMO users, a MIMO VCQI connection layer message enables the base station to reconstruct the MIMO-CQI for all reuse sets on a packet-by-packet basis. This will enable dynamic scheduling (RESTRICTIVE REUSE) gains. (2) For Single Code Word users, dynamic RESTRICTIVE REUSE can be obtained by changing the CQI reporting format, and also sending a MIMO-VCQI connection layer message. (3) For Single Code Word design, quasi-static scheduling gains can be obtained by sending a MIMO-VCQI connection layer message.
摘要翻译：基站中的调度器每5ms需要来自终端的所有重用集合的CQI信息。决定哪个重用设置来安排一个给定的终端。对于MIMO用户，问题在于，使用当前设计，不能为所有重用集合重建CQI。解决方案：（1）对于多码字MIMO用户，MIMO VCQI连接层消息使得基站能够逐个分组地重建所有重用集合的MIMO-CQI。这将使动态调度（限制性重用）获益。（2）对于单码字用户，可以通过改变CQI报告格式，并发送MIMO-VCQI连接层消息来获得动态限制重用。（3）对于单码字设计，可以通过发送MIMO-VCQI连接层消息来获得准静态调度增益。

39. 发明申请

US20060135169A1 Feedback to support restrictive reuse 有权
公开(公告)号：US20060135169A1
公开(公告)日：2006-06-22
申请号：US11020707
申请日：2004-12-22
申请人： Hemanth Sampath , Tingfang Ji
发明人： Hemanth Sampath , Tingfang Ji
IPC分类号： H04Q7/20
CPC分类号： H04W72/085 , H04L5/0048 , H04L5/0053 , H04L25/0204 , H04L25/0222 , H04L2025/03414 , H04L2025/03426 , H04L2025/03802
摘要： The scheduler in a base station needs CQI information from a terminal for all reuse sets every 5 ms. to decide on which re-use set to schedule a given terminal. For MIMO users, the problem is that the CQI cannot be reconstructed for all re-use sets, using the current design. Solution: (1) For Multiple Code Word MIMO users, a MIMO VCQI connection layer message enables the base station to reconstruct the MIMO-CQI for all reuse sets on a packet-by-packet basis. This will enable dynamic scheduling (RESTRICTIVE REUSE) gains. (2) For Single Code Word users, dynamic RESTRICTIVE REUSE can be obtained by changing the CQI reporting format, and also sending a MIMO-VCQI connection layer message. (3) For Single Code Word design, quasi-static scheduling gains can be obtained by sending a MIMO-VCQI connection layer message.

40. 发明授权

US07548752B2 Feedback to support restrictive reuse 有权
标题翻译：支持限制性重用的反馈
公开(公告)号：US07548752B2
公开(公告)日：2009-06-16
申请号：US11020707
申请日：2004-12-22
申请人： Hemanth Sampath , Tingfang Ji
发明人： Hemanth Sampath , Tingfang Ji
IPC分类号： H04Q7/20
CPC分类号： H04W72/085 , H04L5/0048 , H04L5/0053 , H04L25/0204 , H04L25/0222 , H04L2025/03414 , H04L2025/03426 , H04L2025/03802
摘要： The scheduler in a base station needs CQI information from a terminal for all reuse sets every 5 ms. to decide on which re-use set to schedule a given terminal. For MIMO users, the problem is that the CQI cannot be reconstructed for all re-use sets, using the current design. Solution: (1) For Multiple Code Word MIMO users, a MIMO VCQI connection layer message enables the base station to reconstruct the MIMO-CQI for all reuse sets on a packet-by-packet basis. This will enable dynamic scheduling (RESTRICTIVE REUSE) gains. (2) For Single Code Word users, dynamic RESTRICTIVE REUSE can be obtained by changing the CQI reporting format, and also sending a MIMO-VCQI connection layer message. (3) For Single Code Word design, quasi-static scheduling gains can be obtained by sending a MIMO-VCQI connection layer message.
摘要翻译：基站中的调度器每5ms需要来自终端的CQI信息用于所有重用集合。决定哪个重用设置来安排一个给定的终端。对于MIMO用户，问题在于，使用当前设计，不能为所有重用集合重建CQI。解决方案：（1）对于多码字MIMO用户，MIMO VCQI连接层消息使得基站能够逐个分组地重建所有重用集合的MIMO-CQI。这将使动态调度（限制性重用）获益。（2）对于单码字用户，可以通过改变CQI报告格式，并发送MIMO-VCQI连接层消息来获得动态限制重用。（3）对于单码字设计，可以通过发送MIMO-VCQI连接层消息来获得准静态调度增益。

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