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1.发明授权Adaptive multicarrier wireless communication system, apparatus and associated methods 有权自适应多载波无线通信系统，装置及相关方法公开(公告)号：US07286609B2
公开(公告)日：2007-10-23
申请号：US10738689
申请日：2003-12-16
CPC分类号： H04W52/346 , H04L1/0003 , H04L1/0009 , H04L5/0007 , H04L5/0023 , H04L5/0042 , H04L5/0046 , H04L5/0053 , H04L5/006 , H04L5/0085 , H04L5/0096 , H04L25/0204 , H04L25/0212 , H04L25/022 , H04W52/42
摘要： An adaptive multicarrier wireless communication system, apparatus and associated methods are generally disclosed herein. In at least one embodiment, channel state information is used to perform bit loading and power allocation within a multicarrier system. In an example technique, after active subcarriers have been identified for a multicarrier channel and an initial power distribution has been made, a subset of active subcarriers may be found that exceed a channel quality performance threshold. Excess power may then be identified by determining how much power could be reduced in the identified subcarriers so that they still meet, but do not exceed the channel quality performance threshold. In one possible approach, the excess power may be re-allocated to other subcarrier subsets.
摘要翻译： 本文一般公开了一种自适应多载波无线通信系统，装置和相关方法。 在至少一个实施例中，信道状态信息用于执行多载波系统内的比特加载和功率分配。 在示例性技术中，在已经为多载波信道识别出活动副载波并且进行了初始功率分配之后，可以发现超过信道质量性能阈值的活动子载波的子集。 然后可以通过确定在所识别的子载波中可以减少多少功率使得它们仍然满足但不超过信道质量性能阈值来识别过量的功率。 在一种可能的方法中，可以将剩余功率重新分配给其他子载波子集。
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公开(公告)号：US07460876B2
公开(公告)日：2008-12-02
申请号：US10330675
申请日：2002-12-30
CPC分类号： H04W52/42 , H04B7/0615 , H04L27/2601 , H04W52/24
摘要： Briefly, an adaptive transmitted power control scheme, which may be used in stations of a communication system, for example, a wireless communication system. The scheme may allocate transmission power to a communication station based on multiplying each of at least one transmitted subcarrier complex number by a corresponding subcarrier weight. Additionally, a detection scheme may detect whether a transmitted power control scheme according to an embodiment of the invention is used by stations of the communication system. The allocation of transmission power may be also used to transmit additional service information through channels.
摘要翻译： 简而言之，可以在通信系统的站中使用的自适应发射功率控制方案，例如无线通信系统。 该方案可以基于将至少一个发送的子载波复数中的每一个乘以相应的子载波权重来向通信站分配发送功率。 此外，检测方案可以检测根据本发明的实施例的发射功率控制方案是否由通信系统的站使用。 传输功率的分配也可用于通过信道传输附加业务信息。
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3.发明授权System and method for selecting data rates to provide uniform bit loading of subcarriers of a multicarrier communication channel 有权用于选择数据速率以提供多载波通信信道的子载波的均匀位加载的系统和方法公开(公告)号：US07333556B2
公开(公告)日：2008-02-19
申请号：US10815035
申请日：2004-03-30
IPC分类号： H04L27/00
CPC分类号： H04L5/0046 , H04L1/0003 , H04L1/0009 , H04L1/0025 , H04L1/203 , H04L5/0007 , H04L5/0023 , H04L5/006 , Y02D50/10
摘要： A data rate is selected for subcarriers of each frequency and spatial channel of a slowly varying frequency selective multicarrier channel to provide uniform bit loading (UBL) for faster link adaptation. Signal to noise ratios (SNRs) for subcarriers of the multicarrier communication channel may be calculated from channel state information and a transmit power level. A throughput may be estimated for the data rates from the SNRs and one of the data rates may be selected based on the estimated throughputs.
摘要翻译： 为慢速变化的频率选择多载波信道的每个频率和空间信道的子载波选择数据速率，以提供用于更快链路适配的均匀比特加载（UBL）。 可以从信道状态信息和发射功率电平计算多载波通信信道的子载波的信噪比（SNR）。 可以根据SNR估计数据速率的吞吐量，并且可以基于估计的吞吐量来选择一个数据速率。
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4.发明授权公开(公告)号：US07899125B2
公开(公告)日：2011-03-01
申请号：US11812283
申请日：2007-06-18
申请人： Alexander A. Maltsev , Alexey E. Rubtsov , Ali S. Sadri , Andrey V. Pudeyev , Sergey Tiraspolsky , Alexey Davydov
发明人： Alexander A. Maltsev , Alexey E. Rubtsov , Ali S. Sadri , Andrey V. Pudeyev , Sergey Tiraspolsky , Alexey Davydov
IPC分类号： H04L27/28
CPC分类号： H04L27/2628
摘要： A transmitter may include a set of stream groups, each including two or more streams producing a set of orthogonal frequency division multiplexed (OFDM) stream-symbols and a coding unit interleaving the stream-symbols into an interleaved signal. An input bit multiplexer may route an input data signal to be divided among each of the streams. An inverse fast Fourier transform unit may operate on a combined signal formed from interleaving the interleaved signals from each stream group. Each stream may include for example a baseband signal processor producing the OFDM stream-symbols.
摘要翻译： 发射机可以包括一组流组，每组包括产生一组正交频分复用（OFDM）流符号的两个或更多个流，以及将流符号交织到交织信号中的编码单元。 输入位复用器可以路由要在每个流之间划分的输入数据信号。 反相快速傅立叶变换单元可以对从每个流组交织的交错信号形成的组合信号进行操作。 每个流可以包括例如产生OFDM流符号的基带信号处理器。
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5.发明申请公开(公告)号：US20080310526A1
公开(公告)日：2008-12-18
申请号：US11812283
申请日：2007-06-18
申请人： Alexander A. Maltsev , Alexey E. Rubtsov , Ali S. Sadri , Andrey V. Pudeyev , Sergey Tiraspolsky , Alexey Davydov
发明人： Alexander A. Maltsev , Alexey E. Rubtsov , Ali S. Sadri , Andrey V. Pudeyev , Sergey Tiraspolsky , Alexey Davydov
IPC分类号： H04J11/00
CPC分类号： H04L27/2628
摘要： A transmitter may include a set of stream groups, each including two or more streams producing a set of orthogonal frequency division multiplexed (OFDM) stream-symbols and a coding unit interleaving the stream-symbols into an interleaved signal. An input bit multiplexer may route an input data signal to be divided among each of the streams. An inverse fast Fourier transform unit may operate on a combined signal formed from interleaving the interleaved signals from each stream group. Each stream may include for example a baseband signal processor producing the OFDM stream-symbols.
摘要翻译： 发射机可以包括一组流组，每组包括产生一组正交频分复用（OFDM）流符号的两个或更多个流，以及将流符号交织到交织信号中的编码单元。 输入位复用器可以路由要在每个流之间划分的输入数据信号。 反相快速傅立叶变换单元可以对从每个流组交织的交错信号形成的组合信号进行操作。 每个流可以包括例如产生OFDM流符号的基带信号处理器。
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6.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
申请人： Alexander A. Maltsev , Andrey V. Pudeyev , Ali S. Sadri , Sumeet Sandhu , Sergey A. Tiraspolsky , Alexei V. Davydov
发明人： Alexander A. Maltsev , Andrey V. Pudeyev , Ali S. Sadri , Sumeet Sandhu , Sergey A. Tiraspolsky , Alexei V. Davydov
CPC分类号： H04L1/0026 , H04B7/0417 , H04B7/0613 , H04B7/0626 , H04L1/06 , H04L25/0204 , H04L25/03343 , H04L27/2647 , H04L2025/03414 , H04L2025/03426 , H04L2025/03802
摘要： 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.
摘要翻译： 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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7.发明授权Multicarrier transmitter and methods for generating multicarrier communication signals with power amplifier predistortion and linearization 有权多载波发射机和用于通过功率放大器预失真和线性化产生多载波通信信号的方法公开(公告)号：US07463697B2
公开(公告)日：2008-12-09
申请号：US10953206
申请日：2004-09-28
CPC分类号： H04L25/49 , H04L27/2602
摘要： A multicarrier signal is generated by pre-compensating frequency-domain subcarrier symbols for substantially linear distortion subsequently introduced by a time-domain baseband filter.
摘要翻译： 通过对由时域基带滤波器随后引入的基本线性失真进行预补偿的频域子载波符号来生成多载波信号。
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8.发明授权MIMO transmitter for transmitting a group of sequential OFDM symbols using a plurality of antennas 有权MIMO发射机，用于使用多个天线发送一组顺序OFDM符号公开(公告)号：US08396147B2
公开(公告)日：2013-03-12
申请号：US12757117
申请日：2010-04-09
申请人： John S. Sadowsky , Minnie Ho , Eric A. Jacobsen , Alexander A. Maltsev , Ali S. Sadri , Sumeet Sandhu
发明人： John S. Sadowsky , Minnie Ho , Eric A. Jacobsen , Alexander A. Maltsev , Ali S. Sadri , Sumeet Sandhu
CPC分类号： H04W16/28 , H04B7/0408 , H04L27/2602 , H04W74/02
摘要： A MIMO transmitter and method for transmitting a group of sequential OFDM symbols on a downlink channel using a plurality of antennas is disclosed herein. Groups of OFDM subcarriers are individually modulated in accordance with spatial-frequency subcarrier modulation assignments to generate groups of symbol-modulated subcarriers, corresponding symbol-modulated subcarriers are combined for transmission on each of a plurality of spatial channels, and beamforming is performed on the combined symbol-modulated subcarriers for transmission over the spatial channels. The channel comprises a plurality of the groups of the OFDM subcarriers and the OFDM subcarriers within each group of subcarriers and within each group of sequential OFDM symbols have the same spatial-frequency subcarrier modulation assignments. The spatial-frequency subcarrier modulation assignments for each group are determined based on feedback by a receiver, which is determined from spatial channel characteristics of the spatial channels.
摘要翻译： 这里公开了一种用于使用多个天线在下行链路信道上发送一组顺序OFDM符号的MIMO发射器和方法。 根据空间 - 频率副载波调制分配对OFDM子载波组进行单独调制，以生成符号调制子载波组，将多个空间信道中的每一个组合对应的符号调制副载波进行传输，并对组合 用于在空间信道上传输的符号调制副载波。 信道包括多个OFDM子载波组和每个子载波组内的OFDM子载波，并且在每组顺序OFDM符号内具有相同的空间频率副载波调制分配。 基于由空间信道的空间信道特性确定的接收机的反馈来确定每个组的空间频率副载波调制分配。
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9.发明申请公开(公告)号：US20120250778A1
公开(公告)日：2012-10-04
申请号：US13494233
申请日：2012-06-12
IPC分类号： H04W52/20
CPC分类号： H04L5/0046 , H04L5/0007 , H04L5/006
摘要： 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.
摘要翻译： 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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10.发明申请公开(公告)号：US20100195485A1
公开(公告)日：2010-08-05
申请号：US12649058
申请日：2009-12-29
CPC分类号： H04B7/0626 , H04B7/0636 , H04L25/0202 , H04L27/2601
摘要： Briefly, in accordance with one embodiment of the invention, a channel state information packet is encoded by a receiver side device and is fed back to the transmitter side device. The transmitter side device decodes the channel state information packet to extract an estimate of the channel response function.
摘要翻译： 简而言之，根据本发明的一个实施例，信道状态信息分组由接收机侧设备编码，并被反馈到发射机侧设备。 发射机侧设备对信道状态信息分组进行解码以提取信道响应函数的估计。
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