Interleaver design with column swap and bit circulation for multiple convolutional encoder MIMO OFDM system
    1.
    发明授权
    Interleaver design with column swap and bit circulation for multiple convolutional encoder MIMO OFDM system 失效
    交织器设计,具有多个卷积编码器MIMO OFDM系统的列交换和位循环

    公开(公告)号:US07756004B2

    公开(公告)日:2010-07-13

    申请号:US11314925

    申请日:2005-12-20

    IPC分类号: H04J11/00

    摘要: An improved interleaver design to fully explore the diversity of the MIMO OFDM systems provides higher diversity gain than usual. A method for wireless data communication using such interleaver design implements parsing a bit stream into multiple spatial data streams, interleaving the bits in each spatial data stream by performing bit circulation and column swapping to increase diversity of the wireless system, and transmitting the bits of each spatial data stream.

    摘要翻译: 完全探索MIMO OFDM系统的多样性的改进的交织器设计提供比通常更高的分集增益。 使用这种交织器设计的无线数据通信的方法实现将比特流解析成多个空间数据流,通过执行比特循环和列交换来增加每个空间数据流中的比特,以增加无线系统的分集,并且发送每个 空间数据流。

    Interleaver design with multiple encoders for more than two transmit antennas in high throughput WLAN communication systems
    2.
    发明申请
    Interleaver design with multiple encoders for more than two transmit antennas in high throughput WLAN communication systems 有权
    具有多个编码器的交错器设计,用于高吞吐量WLAN通信系统中的两个以上发射天线

    公开(公告)号:US20070147521A1

    公开(公告)日:2007-06-28

    申请号:US11317409

    申请日:2005-12-22

    IPC分类号: H04K1/10

    摘要: A MIMO communication system implements an interleaver design with multiple encoders for more than two transmit antennas for high throughput WLAN communication systems. Multiple encoders are utilized in the transmitter and multiple decoders are utilized in the receiver, wherein each encoder operates at lower clock speed than would be necessary with a single encoder. In conjunction with using multiple encoders, a modified interleaving function for each spatial stream processing allows fully exploring the diversity gains. The provided interleaving function is suitable for transmitter architectures with multiple encoders. Similarly, a modified de-interleaving function is provided that is suitable for receiver architectures with multiple decoders.

    摘要翻译: MIMO通信系统对于高吞吐量WLAN通信系统实现用于多于两个发射天线的多个编码器的交织器设计。 在发射机中使用多个编码器,在接收机中使用多个解码器,其中每个编码器以比单个编码器需要的更低的时钟速度工作。 结合使用多个编码器,用于每个空间流处理的修改的交织功能允许充分地探索分集增益。 所提供的交织功能适用于具有多个编码器的发射机架构。 类似地,提供了适用于具有多个解码器的接收机架构的修改的去交织功能。

    Method of implementing the Multi-MCS-Multi-Receiver Aggregation'' scheme in IEEE 802.11n standard
    3.
    发明申请
    Method of implementing the Multi-MCS-Multi-Receiver Aggregation'' scheme in IEEE 802.11n standard 审中-公开
    IEEE 802.11n标准中实现多MCS接收机聚合方案的方法

    公开(公告)号:US20070097930A1

    公开(公告)日:2007-05-03

    申请号:US11261727

    申请日:2005-10-27

    IPC分类号: H04Q7/24

    CPC分类号: H04W28/06 H04W84/12

    摘要: A method of communicating data over a wireless local area network according to an IEEE 802.11n proposal for Multi-MCS-Multi-Receiver Aggregation (MMRA), the improvement providing a modified PPDU format with MMRA signaling wherein the HT-SIG format is preserved. Instead of increasing the length of HT-SIG, a modified PPDU format with MMRA signaling is provided where the HT-SIG-MMRA is placed after the HT-LTF. In this manner, the original HT-SIG format is preserved, while accommodating the variable length of HT-SIG-MMRA. Further, in a modified HT-SIG structure, the Length and MCS of the HT-SIG-MMRA signaling part is placed in the LENGTH field and MCS field of HT-SIG1 (4 us), respectively, without changing the length of existing HT-SIG (8 us).

    摘要翻译: 根据针对多MCS多重接收机聚合(MMRA)的IEEE 802.11n提议通过无线局域网传送数据的方法,该改进提供了具有MMRA信令的修改的PPDU格式,其中保留了HT-SIG格式。 而不是增加HT-SIG的长度,提供了具有MMRA信令的修改的PPDU格式,其中HT-SIG-MMRA置于HT-LTF之后。 以这种方式,原始的HT-SIG格式被保留,同时适应HT-SIG-MMRA的可变长度。 此外,在修改的HT-SIG结构中,HT-SIG-MMRA信令部分的长度和MCS分别被放置在HT-SIG 1(4 us)的LENGTH字段和MCS字段中,而不改变现有的 HT-SIG(8我们)。

    Interleaver for IEEE 802.11n standard
    5.
    发明授权
    Interleaver for IEEE 802.11n standard 有权
    IEEE 802.11n标准的交织器

    公开(公告)号:US07859987B2

    公开(公告)日:2010-12-28

    申请号:US11313403

    申请日:2005-12-20

    IPC分类号: H40L11/00

    摘要: A MIMO wireless system includes a transmitter having a parser that parses a bit stream into multiple spatial data streams and multiple interleavers corresponding to the multiple spatial data streams, where each interleaver interleaves the bits in the corresponding spatial data stream by performing frequency rotation after an interleaving operation, to increase diversity of the wireless system. The MIMO wireless system also includes a receiver that has deinterleavers that deinterleaves spatial bit streams transmitted by the transmitter.

    摘要翻译: MIMO无线系统包括具有将比特流解析为多个空间数据流的解析器的发射机和对应于多个空间数据流的多个交织器,其中每个交织器在交织之后执行频率旋转来交织相应空间数据流中的比特 操作,增加无线系统的多样性。 MIMO无线系统还包括具有解交织器的解交织器的接收机,其对由发射机发送的空间比特流进行解交织。

    SYSTEM AND METHOD FOR MAXIMUM LIKELIHOOD DECODING IN MULTIPLE OUT WIRELESS COMMUNICATION SYSTEMS
    6.
    发明申请
    SYSTEM AND METHOD FOR MAXIMUM LIKELIHOOD DECODING IN MULTIPLE OUT WIRELESS COMMUNICATION SYSTEMS 有权
    用于多个无线通信系统中最大似然解码的系统和方法

    公开(公告)号:US20090190682A1

    公开(公告)日:2009-07-30

    申请号:US11571366

    申请日:2005-06-27

    IPC分类号: H04L23/02 H04K1/10

    CPC分类号: H04L1/06 H04L25/03197

    摘要: A system and method for a simplified Maximum Likelihood (ML) decoding (203) for MIMO systems is provided. The full ML decoding gives the lower bound of the decoding for CC coded MIMO systems. However, the computation cost is too high to be implemented in real system. Many alternative methods have been proposed for the decoding. Among them, weighted Zero Forcing (WZF) is one that can give affordable performance with reasonable computation complexity but there are several dB of performance gap for the WZF decoding and ML decoding. This present invention discloses a decoding system and method having improved performance over WZF decoding with affordable implementation complexity.

    摘要翻译: 提供了一种用于MIMO系统的简化最大似然(ML)解码(203)的系统和方法。 完整的ML解码为CC编码的MIMO系统提供了解码的下限。 然而,计算成本太高,无法在实际系统中实现。 已经提出了用于解码的许多替代方法。 其中,加权零强制(WZF)是能够以合理的计算复杂度提供负担得起的性能,但对于WZF解码和ML解码,存在几dB的性能差距。 本发明公开了一种具有可靠实现复杂度的WZF解码性能提高的解码系统和方法。

    ROBUST WIRELESS MULTIMEDIA TRANSMISSION IN MULTIPLE IN MULTIPLE-OUT (MIMO) SYSTEM ASSISTED BY CHANNEL STATE INFORMATION
    7.
    发明申请
    ROBUST WIRELESS MULTIMEDIA TRANSMISSION IN MULTIPLE IN MULTIPLE-OUT (MIMO) SYSTEM ASSISTED BY CHANNEL STATE INFORMATION 审中-公开
    通过信道状态信息辅助的多输出(MIMO)系统中的多个无线多媒体传输的鲁棒无线多媒体传输

    公开(公告)号:US20090147876A1

    公开(公告)日:2009-06-11

    申请号:US11719490

    申请日:2005-11-16

    申请人: Xuemei Ouyang

    发明人: Xuemei Ouyang

    IPC分类号: H04B7/02

    摘要: A system and method is provided wherein channel state information assisted MIMO transmission based on singular value decomposition (SVD) (204) (304) simplifies the decoding process. The present invention is a joint source and channel coding system and method for robust wireless multimedia communication. Using the fact that SVD redistributes the channel energy in a descending way, the base layer of the Fine-Grained-Scalability (FGS) (208) is mapped to the highest signal-to-noise (SNR) path to obtain better protection, while other enhancement layers are mapped to other paths such that less important layers are mapped to lower SNR paths in the SVD -decomposed channel. A multiple description code (MDC) (207) is also used in this manner such that at least one coded stream is provided more protection because of the high SNR. This invention pertains to any MIMO based wireless multimedia communication system.

    摘要翻译: 提供了一种系统和方法,其中基于奇异值分解(SVD)(204)(304)的信道状态信息辅助MIMO传输简化了解码过程。 本发明是用于鲁棒无线多媒体通信的联合源和信道编码系统和方法。 使用SVD以降序重新分配信道能量的事实,细粒度可扩展性(FGS)(208)的基本层映射到最高信噪比(SNR)路径以获得更好的保护,而 其他增强层被映射到其他路径,使得较不重要的层映射到SVD分解信道中的较低SNR路径。 还以这种方式使用多描述代码(MDC)(207),使得至少一个编码流由于高SNR而被提供更多的保护。 本发明涉及任何基于MIMO的无线多媒体通信系统。

    Method of designing interleavers for multiple-encoder MIMO OFDM systems
    8.
    发明授权
    Method of designing interleavers for multiple-encoder MIMO OFDM systems 有权
    多编码MIMO MIMO系统的交织器设计方法

    公开(公告)号:US07397862B2

    公开(公告)日:2008-07-08

    申请号:US11253855

    申请日:2005-10-18

    IPC分类号: H04L1/02

    摘要: An improved interleaver design to fully explore the diversity of the MIMO OFDM systems provides higher diversity gain than usual. A method for wireless data communication using such interleaver design implements parsing a bit stream into multiple spatial data streams, interleaving the bits in each spatial data stream by performing bit circulation to increase diversity of the wireless system, and transmitting the bits of each spatial data stream.

    摘要翻译: 完全探索MIMO OFDM系统的多样性的改进的交织器设计提供比通常更高的分集增益。 使用这种交织器设计的无线数据通信的方法实现将比特流解析成多个空间数据流,通过执行比特循环来交织每个空间数据流中的比特以增加无线系统的分集,并且发送每个空间数据流的比特 。

    Blind magnitude equalizer for segment sync-based timing recovery of receivers
    9.
    发明授权
    Blind magnitude equalizer for segment sync-based timing recovery of receivers 有权
    盲均衡器用于接收器的基于段同步的定时恢复

    公开(公告)号:US07269216B2

    公开(公告)日:2007-09-11

    申请号:US10139196

    申请日:2002-05-06

    IPC分类号: H03H7/30 H04L27/06

    摘要: A magnitude only equalizer equalizes a magnitude of a received wireless signal without regard to phase distortions introduced, and transmits the magnitude equalized signal to a timing recovery loop for improved correlation peak detection in a sync based timing recovery scheme. A channel equalizer receiving the output signal from the timing recovery loop equalizes the signal and corrects any phase distortions introduced by the magnitude only equalizer. The magnitude only equalizer includes at least one filter utilizing only real coefficients and constrained such that the direct term of the overall filter structure within the magnitude only equalizer is unity.

    摘要翻译: 仅幅度均衡器不考虑引入的相位失真来均衡接收到的无线信号的幅度,并将幅度均衡的信号发送到定时恢复环路,以在基于同步的定时恢复方案中改善相关峰值检测。 接收来自定时恢复环路的输出信号的信道均衡器对信号进行均衡,并校正由仅量大均衡器引入的任何相位失真。 仅幅度均衡器包括至少一个仅使用实数系数并被约束的滤波器,使得仅在幅度均衡器内的整个滤波器结构的直接项是一致的。

    Interleaver design for IEEE 802.11n standard
    10.
    发明申请
    Interleaver design for IEEE 802.11n standard 失效
    用于IEEE 802.11n标准的交织器设计

    公开(公告)号:US20070127587A1

    公开(公告)日:2007-06-07

    申请号:US11292851

    申请日:2005-12-01

    IPC分类号: H04L1/02 H04K1/10

    摘要: A MIMO wireless system includes a transmitter having a parser that parses a bit stream into multiple spatial data streams and multiple interleavers corresponding to the multiple spatial data streams, where each interleaver interleaves the bits in the corresponding spatial data stream by performing multiple column rotations and row rotation, to increase diversity of the wireless system. The MIMO wireless system also includes a receiver that has deinterleavers that deinterleaves spatial bit streams transmitted by the transmitter.

    摘要翻译: MIMO无线系统包括发射机,其具有将比特流解析为多个空间数据流的解析器和对应于多个空间数据流的多个交织器,其中每个交织器通过执行多个列旋转和行来交织相应空间数据流中的比特 旋转,以增加无线系统的多样性。 MIMO无线系统还包括具有解交织器的解交织器的接收机,其对由发射机发送的空间比特流进行解交织。