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1.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
CPC分类号： H04L1/0071 , H04L1/0042 , H04L27/2608 , H04L27/2628
摘要： 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.
摘要翻译： 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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2.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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3.发明申请公开(公告)号：US20100135426A1
公开(公告)日：2010-06-03
申请号：US12645914
申请日：2009-12-23
IPC分类号： H04L27/28
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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4.发明授权公开(公告)号：US07688766B2
公开(公告)日：2010-03-30
申请号：US10664218
申请日：2003-09-17
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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5.发明授权Method and adaptive bit interleaver for wideband systems using adaptive bit loading 有权使用自适应位加载的宽带系统的方法和自适应比特交织器公开(公告)号：US07570695B2
公开(公告)日：2009-08-04
申请号：US10740170
申请日：2003-12-18
CPC分类号： H04L1/0071 , H04L1/0042 , H04L27/2608 , H04L27/2628
摘要： An adaptive interleaver for wideband orthogonal frequency division multiplexed (OFDM) communications 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 of a wideband channel. The interleaver matrix size may be based on the variable number of coded bits per OFDM symbol and the number of subchannels that comprise the wideband channel. 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. A receiver may include an adaptive deinterleaver to reverse the process.
摘要翻译： 用于宽带正交频分复用（OFDM）通信的自适应交织器将每OFDM符号的可变数量的编码比特（Ncbps）置换。 基于宽带信道的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构成宽带信道的子信道的数量。 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交织的比特序列以用于正交子载波上的后续调制。 接收机可以包括自适应解交织器来反转该过程。
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公开(公告)号：US20090110103A1
公开(公告)日：2009-04-30
申请号：US12346387
申请日：2008-12-30
IPC分类号： H04L27/28
CPC分类号： H04L27/2608 , H04L1/0003 , H04L1/0009
摘要： Various embodiments are described for adaptive puncturing techniques.
摘要翻译： 针对自适应穿孔技术描述了各种实施例。
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7.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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8.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
IPC分类号： H04B7/06
CPC分类号： H04L1/0071 , H04L1/0042 , H04L27/2608 , H04L27/2628
摘要： 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.
摘要翻译： 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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9.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
IPC分类号： H04L27/36
CPC分类号： H04L1/0071 , H04L1/0042 , H04L27/2608 , H04L27/2628
摘要： 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.
摘要翻译： 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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10.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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