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11.发明授权Broadband multicarrier transmitter with subchannel frequency diversity for transmitting a plurality of spatial streams 有权具有用于发送多个空间流的子信道频率分集的宽带多载波发射机公开(公告)号：US07616704B2
公开(公告)日：2009-11-10
申请号：US11075030
申请日：2005-03-08
Applicant: Qinghua Li , Xintian E Lin , Alexei V Davydov
Inventor： Qinghua Li , Xintian E Lin , Alexei V Davydov
CPC classification number: H04B7/0669 , H04B7/0617 , H04B7/068 , H04L1/0625 , H04L5/0023 , H04L25/0204 , H04L27/0008 , H04L27/2626 , H04L27/36
Abstract: A multicarrier transmitter assigns for each of a plurality of spatial channels, sets of the constellation symbols to subcarriers of each subchannel. Constellation symbol assignments to the subchannels are circularly rotated among some of the spatial channels so that subchannels use different sets of subcarriers for each spatial channel for enhanced frequency diversity.
Abstract translation: 多载波发射机为每个子信道的子载波分配多个空间信道中的每个星座符号的集合。 对于子信道的星座符号分配在一些空间信道中循环旋转，使得子信道对于每个空间信道使用不同的子载波集合用于增强的频率分集。
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12.发明申请OFDM TRANSMITTER WITH ADAPTIVE BIT INTERLEAVER FOR ADAPTIVE BIT LOADING AND METHOD FOR OFDM COMMUNICATIONS 有权具有用于自适应位加载的自适应位交织器的OFDM发射机和用于OFDM通信的方法公开(公告)号：US20090257454A1
公开(公告)日：2009-10-15
申请号：US12492466
申请日：2009-06-26
Applicant: Alexander Maltsev , Ali S. Sadri , Alexei V. Davydov
Inventor： Alexander Maltsev , Ali S. Sadri , Alexei V. Davydov
CPC classification number: H04L1/0071 , H04L1/0042 , H04L27/2608 , H04L27/2628
Abstract: A multi-antenna transmitter includes an adaptive bit interleaver for orthogonal frequency division multiplexed (OFDM) communications. The adaptive bit interleaver permutes a variable number of coded bits per OFDM symbol (Ncbps). The variable number of coded bits is calculated based on individual subcarrier modulation assignments for orthogonal subcarriers. The interleaver matrix size may be based on the variable number of coded bits per OFDM symbol and the number of subchannels. The interleaver may add padding bits to the interleaver matrix to fill any remaining positions, and after performing an interleaving operation, the interleaver may prune the padding bits to provide a sequence of interleaved bits for subsequent modulation on the orthogonal subcarriers and transmission by more than one antenna. The transmitter may transmit the OFDM symbol in accordance with an IEEE 802.16 standard.
Abstract translation: 多天线发射机包括用于正交频分复用（OFDM）通信的自适应比特交织器。 自适应比特交织器将每个OFDM符号的可变数量的编码比特（Ncbps）置换。 基于正交子载波的各个子载波调制分配来计算编码比特的可变数目。 交织器矩阵大小可以基于每OFDM符号的可变数量的编码比特和子信道的数量。 交织器可以向交织器矩阵添加填充比特以填充任何剩余的位置，并且在执行交织操作之后，交织器可以修剪填充比特以提供用于在正交子载波上进行后续调制的多个交织比特序列，并且多于一个 天线。 发射机可以根据IEEE 802.16标准发射OFDM符号。
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13.发明申请OFDM TRANSMITTER WITH VARIABLE CODE BLOCK INTERLEAVER AND METHOD FOR OFDM COMMUNICATIONS WITH VARIABLE CODE BLOCK SIZES 审中-公开具有可变码代码块的OFDM发射机和用于具有可变码区块的OFDM通信的方法公开(公告)号：US20120275539A1
公开(公告)日：2012-11-01
申请号：US13544120
申请日：2012-07-09
Applicant: Alexander A. Maltsev , Ali S. Sadri , Alexei V. Davydov
Inventor： Alexander A. Maltsev , Ali S. Sadri , Alexei V. Davydov
IPC: H04B7/06
CPC classification number: H04L1/0071 , H04L1/0042 , H04L27/2608 , H04L27/2628
Abstract: A multi-antenna transmitter is configured for orthogonal frequency division multiplexed (OFDM) communications. The multi-antenna transmitter includes circuitry to receive an input bit sequence for code block segmentation including adding filler bits based on a selected code block size, a encoder to encode the bit sequence and an interleaver configurable to perform interleaving operations on blocks of bits of various code block sizes of the bit sequence. A controller is to select the code block size for the interleaver and OFDM transmitter circuitry to transmit OFDM symbols on subcarriers utilizing more than one antenna. The OFDM symbols are generated at least in part from the interleaved blocks.
Abstract translation: 多天线发射机被配置用于正交频分复用（OFDM）通信。 多天线发射机包括用于接收用于码块分段的输入比特序列的电路，包括基于选择的码块大小添加填充比特，对比特序列进行编码的编码器和可配置为对各种比特的块进行交织操作的交织器 比特序列的码块大小。 控制器是选择用于交织器和OFDM发射机电路的码块大小，以利用多于一个天线的子载波上的OFDM符号。 至少部分地从交织块生成OFDM符号。
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14.发明授权OFDM transmitter with adaptive bit interleaver for adaptive bit loading and method for OFDM communications 有权具有用于自适应比特加载的自适应比特交织器的OFDM发射机以及用于OFDM通信的方法公开(公告)号：US08218674B2
公开(公告)日：2012-07-10
申请号：US12492466
申请日：2009-06-26
Applicant: Alexander A. Maltsev , Ali S. Sadri , Alexei V. Davydov
Inventor： Alexander A. Maltsev , Ali S. Sadri , Alexei V. Davydov
IPC: H04L27/36
CPC classification number: H04L1/0071 , H04L1/0042 , H04L27/2608 , H04L27/2628
Abstract: A multi-antenna transmitter includes an adaptive bit interleaver for orthogonal frequency division multiplexed (OFDM) communications. The adaptive bit interleaver permutes a variable number of coded bits per OFDM symbol (Ncbps). The variable number of coded bits is calculated based on individual subcarrier modulation assignments for orthogonal subcarriers. The interleaver matrix size may be based on the variable number of coded bits per OFDM symbol and the number of subchannels. The interleaver may add padding bits to the interleaver matrix to fill any remaining positions, and after performing an interleaving operation, the interleaver may prune the padding bits to provide a sequence of interleaved bits for subsequent modulation on the orthogonal subcarriers and transmission by more than one antenna. The transmitter may transmit the OFDM symbol in accordance with an IEEE 802.16 standard.
Abstract translation: 多天线发射机包括用于正交频分复用（OFDM）通信的自适应比特交织器。 自适应比特交织器将每个OFDM符号的可变数量的编码比特（Ncbps）置换。 基于正交子载波的各个子载波调制分配来计算编码比特的可变数目。 交织器矩阵大小可以基于每OFDM符号的可变数量的编码比特和子信道的数量。 交织器可以向交织器矩阵添加填充比特以填充任何剩余的位置，并且在执行交织操作之后，交织器可以修剪填充比特以提供用于在正交子载波上进行后续调制的多个交织比特序列，并且多于一个 天线。 发射机可以根据IEEE 802.16标准发射OFDM符号。
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公开(公告)号：US07881390B2
公开(公告)日：2011-02-01
申请号：US11291800
申请日：2005-11-30
Applicant: John Sadowsky , Alexander A. Maltsev , Vadim S. Sergeyev , Alexei V. Davydov
Inventor： John Sadowsky , Alexander A. Maltsev , Vadim S. Sergeyev , Alexei V. Davydov
IPC: H04K1/10
CPC classification number: H04L27/2602 , H04L27/2607
Abstract: Methods and apparatus provide increased symbol length with more subcarriers in a fixed-bandwidth system. The subcarriers spacing may be reduced to provide increased symbol length and enable higher throughput. In one implementation, a system compatible with the IEEE P802.11n proposal can use 128 subcarriers in 20 MHz operation to provide increased throughput in lower-bandwidth channel operation.
Abstract translation: 方法和装置在固定带宽系统中提供具有更多子载波的增加的符号长度。 可以减小子载波间隔以提供增加的符号长度并实现更高的吞吐量。 在一个实现中，与IEEE P802.11n提议兼容的系统可以在20MHz操作中使用128个子载波来在较低带宽信道操作中提供增加的吞吐量。
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Patent Agency Ranking
16.发明授权Multiple antenna multicarrier communication system and method with reduced mobile-station processing 有权多天线多载波通信系统和减少移动台处理的方法公开(公告)号：US07649861B2
公开(公告)日：2010-01-19
申请号：US10999592
申请日：2004-11-30
Applicant: Alexander A. Maltsev , Andrey V. Pudeyev , Ali S. Sadri , Sumeet Sandhu , Sergey A. Tiraspolsky , Alexei V. Davydov
Inventor： Alexander A. Maltsev , Andrey V. Pudeyev , Ali S. Sadri , Sumeet Sandhu , Sergey A. Tiraspolsky , Alexei V. Davydov
CPC classification number: H04L1/0026 , H04B7/0417 , H04B7/0613 , H04B7/0626 , H04L1/06 , H04L25/0204 , H04L25/03343 , H04L27/2647 , H04L2025/03414 , H04L2025/03426 , H04L2025/03802
Abstract: In a multiple-input multiple-output (MIMO) multicarrier communication system, a mobile station sends a quantized time-domain representation of the channel transfer function to a base station for use by the base station in generating beamforming coefficients for use in subsequent transmissions to the mobile station. In some embodiments, the quantized time-domain representation of the channel transfer function may be generated from selected most significant rays of an initial estimated sampled channel impulse response. Other embodiments may be described and claimed.
Abstract translation: 在多输入多输出（MIMO）多载波通信系统中，移动台向基站发送信道传递函数的量化时域表示，供基站用于生成波束形成系数以用于后续传输中 移动台。 在一些实施例中，信道传递函数的量化时域表示可以从初始估计采样信道脉冲响应的选定的最高有效射线产生。 可以描述和要求保护其他实施例。
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公开(公告)号：US07489621B2
公开(公告)日：2009-02-10
申请号：US10749853
申请日：2003-12-30
Applicant: Alexander A Maltsev , Ali S. Sadri , Alexei V. Davydov
Inventor： Alexander A Maltsev , Ali S. Sadri , Alexei V. Davydov
CPC classification number: H04L27/2608 , H04L1/0003 , H04L1/0009
Abstract: Various embodiments are described for adaptive puncturing techniques involving an adaptive bit loading block to select a modulation scheme and a puncturing pattern for each of a plurality of subcarriers or subcarrier bands based on subcarrier channel state information.
Abstract translation: 针对涉及自适应位加载块的自适应穿孔技术描述了各种实施例，以基于子载波信道状态信息为多个子载波或子载波频带中的每一个选择调制方案和打孔模式。
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18.发明授权公开(公告)号：US08913533B2
公开(公告)日：2014-12-16
申请号：US13494233
申请日：2012-06-12
Applicant: Alexander A. Maltsev , Ali S. Sadri , Alexei V. Davydov
Inventor： Alexander A. Maltsev , Ali S. Sadri , Alexei V. Davydov
CPC classification number: H04L5/0046 , H04L5/0007 , H04L5/006
Abstract: Briefly, in accordance with one embodiment of the invention, bit and power loading may be utilized to select a modulation rate and subcarrier power scaling based on channel state information. As a result, a higher data rate may be utilized for a given signal-to-noise ratio while maintaining a constant bit error rate.
Abstract translation: 简而言之，根据本发明的一个实施例，可以利用比特和功率负载来选择基于信道状态信息的调制速率和子载波功率缩放。 结果，在保持恒定误码率的同时，可以对给定的信噪比利用更高的数据速率。
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公开(公告)号：US20120207242A1
公开(公告)日：2012-08-16
申请号：US13454194
申请日：2012-04-24
Applicant: Alexander A. Maltsev , Ali S. Sadri , Alexei V. Davydov
Inventor： Alexander A. Maltsev , Ali S. Sadri , Alexei V. Davydov
IPC: H04L27/28
CPC classification number: H04L27/2608 , H04L1/0003 , H04L1/0009
Abstract: Various embodiments are described for adaptive puncturing techniques.
Abstract translation: 针对自适应穿孔技术描述了各种实施例。
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20.发明授权公开(公告)号：US08218464B2
公开(公告)日：2012-07-10
申请号：US12645914
申请日：2009-12-23
Applicant: Alexander A. Maltsev , Ali S. Sadri , Alexei V. Davydov
Inventor： Alexander A. Maltsev , Ali S. Sadri , Alexei V. Davydov
CPC classification number: H04L5/0046 , H04L5/0007 , H04L5/006
Abstract: Briefly, in accordance with one embodiment of the invention, bit and power loading may be utilized to select a modulation rate and subcarrier power scaling based on channel state information. As a result, a higher data rate may be utilized for a given signal-to-noise ratio while maintaining a constant bit error rate.
Abstract translation: 简而言之，根据本发明的一个实施例，可以利用比特和功率负载来选择基于信道状态信息的调制速率和子载波功率缩放。 结果，在保持恒定误码率的同时，可以对给定的信噪比利用更高的数据速率。
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