-
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。
-
22.发明授权公开(公告)号：US07394873B2
公开(公告)日：2008-07-01
申请号：US10379650
申请日：2003-03-05
IPC分类号： H04L27/00
CPC分类号： H04L25/0216 , H04L25/0218 , H04L25/022 , H04L25/0226 , H04L25/025 , H04L27/2647
摘要： Briefly, in accordance with one embodiment of the invention, a channel estimator may be adapted to provide a channel estimate based at least in part on an estimated delay spread. The channel estimator may be adapted to provide a more accurate channel estimation in the event of a lower estimated delay spread. In one embodiment, the channel estimator provides a frequency domain channel estimate, and in another embodiment the channel estimator provides a time domain channel estimate.
摘要翻译： 简而言之，根据本发明的一个实施例，信道估计器可以适于至少部分地基于估计的延迟扩展来提供信道估计。 信道估计器可以适于在估计延迟扩展较低的情况下提供更准确的信道估计。 在一个实施例中，信道估计器提供频域信道估计，并且在另一实施例中，信道估计器提供时域信道估计。
-
23.发明授权公开(公告)号：US07345989B2
公开(公告)日：2008-03-18
申请号：US10812284
申请日：2004-03-29
IPC分类号： H04Q7/20
CPC分类号： H04L5/0046 , H04L5/0007 , H04L5/006 , H04L5/06
摘要： Adaptive channelization is achieved in a high throughput multicarrier system by first subdividing a high throughput channel into a number of frequency sub-channels. A channelization decision may then be made within a device as to which of the sub-channels to use for a corresponding high throughput wireless link based on channel state information.
摘要翻译： 通过首先将高吞吐量信道细分成多个频率子信道，在高吞吐量多载波系统中实现自适应信道化。 然后可以在设备内基于信道状态信息在相应的高吞吐量无线链路中使用哪个子信道进行信道化决定。
-
24.发明授权OFDM transmitter with variable code block interleaver and method for OFDM communications with variable code block sizes 有权具有可变码块交织器的OFDM发射机和用于具有可变码块大小的OFDM通信的方法公开(公告)号：US09166741B2
公开(公告)日：2015-10-20
申请号：US13544120
申请日：2012-07-09
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。
-
公开(公告)号：US08289865B2
公开(公告)日：2012-10-16
申请号：US12397349
申请日：2009-03-04
IPC分类号： H04L12/28
CPC分类号： H04L1/0025 , H04L1/0003 , H04L1/0009 , H04L1/0028 , H04L1/16 , H04L5/0007 , H04L5/0046 , H04L5/006
摘要： A method and apparatus to exchange channel state information between two or more stations is provided. The channel state information may be used to adapt a power, a transmission rate and a modulation scheme of a transmitted signal. Other embodiments are described and claimed.
摘要翻译： 提供了一种在两个或更多个站之间交换信道状态信息的方法和装置。 信道状态信息可以用于调整发射信号的功率，传输速率和调制方案。 描述和要求保护其他实施例。
-
26.发明授权公开(公告)号：US08040847B2
公开(公告)日：2011-10-18
申请号：US12649058
申请日：2009-12-29
IPC分类号： H04J4/00
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。
-
27.发明申请公开(公告)号：US20110044273A1
公开(公告)日：2011-02-24
申请号：US12916784
申请日：2010-11-01
IPC分类号： H04W72/04
CPC分类号： H04L5/0053 , H04L5/0007 , H04L5/0094 , H04L27/2602 , H04W72/0406 , H04W84/12
摘要： Embodiments of a high-throughput (HT) communication station (STA) and method for communicating over a primary and a secondary channel are generally described herein. In some embodiments, the high-throughput (HT) communication station (STA) comprises a physical layer (PHY) and a media-access control (MAC) layer to provide a data unit to the physical layer. The PHY layer may be configured to transmit a packet that includes the data unit over a channel bandwidth comprising a first channel and an additional channel in accordance with an OFDM communication technique. The packet may have a frame structure that includes a channel bandwidth parameter to indicate the channel bandwidth used, a modulation and coding parameter to indicate a modulation and coding scheme of the packet as transmitted over the channel bandwidth.
摘要翻译： 这里通常描述用于通过主信道和辅信道进行通信的高吞吐量（HT）通信站（STA）和方法的实施例。 在一些实施例中，高吞吐量（HT）通信站（STA）包括物理层（PHY）和媒体访问控制（MAC）层，以向物理层提供数据单元。 PHY层可以被配置为根据OFDM通信技术在包括第一信道和附加信道的信道带宽上发送包括数据单元的分组。 分组可以具有包括用于指示所使用的信道带宽的信道带宽参数的帧结构，用于指示在信道带宽上发送的分组的调制和编码方案的调制和编码参数。
-
28.发明授权Multicarrier communication system and methods for link adaptation using uniform bit loading and subcarrier puncturing 有权多载波通信系统和使用均匀比特加载和子载波穿孔的链路自适应的方法公开(公告)号：US07570953B2
公开(公告)日：2009-08-04
申请号：US10862535
申请日：2004-06-07
IPC分类号： H04W72/00
CPC分类号： H04L27/2608 , H04L1/0003 , H04L1/0009 , H04L5/0007 , H04L5/0023 , H04L5/0042 , H04L5/0046 , H04L5/0053 , H04L5/006 , H04L5/0085 , H04L5/0096 , H04W52/34 , H04W52/42
摘要： Transmission parameters for a multicarrier communication channel are selected by setting a power level for each subcarrier of an active set of subcarriers, and calculating the channel capacity based on the power levels and effective noise powers. The number of active subcarriers of the set is decreased, the power levels are reset and the channel capacity is recalculated until a final set of active subcarriers result that provide the highest channel capacity.
摘要翻译： 通过设置有效的子载波组的每个子载波的功率电平，并且基于功率电平和有效噪声功率来计算信道容量来选择多载波通信信道的传输参数。 集合中的有效子载波数量减少，功率电平被重置，并且重新计算信道容量，直到有效子载波的最终集合产生提供最高信道容量。
-
29.发明授权Multiple input multiple output multicarrier communication system and methods with quantized beamforming feedback 有权多输入多输出多载波通信系统和具有量化波束成形反馈的方法公开(公告)号：US07570696B2
公开(公告)日：2009-08-04
申请号：US10877943
申请日：2004-06-25
申请人： Alexander A. Maltsev , Ali S Sadri , Sergey A. Tiraspolsky , Alexander Flaksman , Alexei V Davydov
发明人： Alexander A. Maltsev , Ali S Sadri , Sergey A. Tiraspolsky , Alexander Flaksman , Alexei V Davydov
IPC分类号： H04L27/28
CPC分类号： H04B7/066 , H04B7/0617 , H04B7/0634 , H04B7/0641 , H04B7/0842 , H04L25/03343 , H04L2025/03414 , H04L2025/03783
摘要： A multicarrier receiver generates a quantized transmit beamformer matrix ({tilde over (V)}) for each subcarrier of a multicarrier communication channel for use by a multicarrier transmitting station. The multicarrier receiver applies a corrected receiver beamformer matrix (ŨH) to received subcarriers signals generated by signals received from the transmitting station.
摘要翻译： 多载波接收机为多载波发射台使用的多载波通信信道的每个子载波生成量化的发射波束形成器矩阵（{tilde over（V）}）。 多载波接收机将经校正的接收机波束形成器矩阵（UH）应用于从从发射台接收的信号产生的接收到的子载波信号。
-
30.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。
-
-
-
-
-
-
-
-
-
搜索结果
70 条记录 (耗时 0.032 秒)
