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    • 1. 发明申请
    • Methods and systems for multi-protocol communication
    • 多协议通信的方法和系统
    • US20050138194A1
    • 2005-06-23
    • US10744864
    • 2003-12-23
    • Xiaolin LuManish GoelSrinath HosurArndt Mueller
    • Xiaolin LuManish GoelSrinath HosurArndt Mueller
    • G06F15/16G06F15/173H04L29/06
    • H04L29/06H04L69/18
    • In at least some embodiments, a system may comprise one or more devices configured to communicate according to a first protocol that uses a data frame comprising a header field and a data field and one or more devices configured to communicate according to a second protocol that uses a data frame comprising a header field, a header extension, and a data field. The data frame used by the second protocol may comprise fictitious information for interpretation by the one or more devices configured according to the first protocol. In accordance with some embodiments of the invention, the devices configured according to the first protocol may use the fictitious information to determine a data transmission duration of data packets sent by devices configured according to the second protocol, even though the data packets may be sent according to parameters that are not supported by the first protocol.
    • 在至少一些实施例中,系统可以包括被配置为根据第一协议进行通信的一个或多个设备,所述第一协议使用包括报头字段和数据字段的数据帧,以及被配置为根据使用的第二协议进行通信的一个或多个设备 包括报头字段,报头扩展和数据字段的数据帧。 由第二协议使用的数据帧可以包括用于由根据第一协议配置的一个或多个设备的解释的虚构信息。 根据本发明的一些实施例,根据第一协议配置的设备可以使用虚构信息来确定根据第二协议配置的设备发送的数据分组的数据传输持续时间,即使可以根据第二协议发送数据分组 到第一个协议不支持的参数。
    • 2. 发明授权
    • Systems and methods for determining the number of channel estimation symbols based on the channel coherence bandwidth
    • 基于信道相干带宽确定信道估计符号数目的系统和方法
    • US09100256B2
    • 2015-08-04
    • US12491782
    • 2009-06-25
    • Arndt Mueller
    • Arndt Mueller
    • H04W4/00H04L27/26H04L25/02
    • H04L27/28H04L25/0202H04L27/2607H04L27/2647
    • Various systems and methods are provided for channel estimation. These systems and methods (a) determine a coherence bandwidth for the channel, (b) adapt the channel estimation based on the coherence bandwidth, and (c) perform channel estimation by transmitting a channel estimation symbol over a channel. In some embodiments, the channel estimation is adapted based on the coherence bandwidth. This may include selecting a number of channel estimation symbols to transmit in a packet. Additionally, the number of channel estimation symbols transmitted in a packet can be selected by increasing the number of channel estimation symbols when the coherence bandwidth of the channel is high or decreasing the number of channel estimation symbols when the coherence bandwidth of the channel is low.
    • 提供各种系统和方法用于信道估计。 这些系统和方法(a)确定信道的相干带宽,(b)基于相干带宽适应信道估计,以及(c)通过在信道上发送信道估计符号来执行信道估计。 在一些实施例中,基于相干带宽来调整信道估计。 这可以包括选择在数据包中传输的多个信道估计符号。 此外,当信道的相干带宽高时,可以通过增加信道估计符号的数量来选择在分组中发送的信道估计符号的数量,或者当信道的相干带宽低时,减少信道估计符号的数量。
    • 7. 发明授权
    • Method and apparatus for performing constellation scrambling in a multimedia home network
    • 用于在多媒体家庭网络中执行星座加扰的方法和装置
    • US08320566B2
    • 2012-11-27
    • US12580227
    • 2009-10-15
    • Arndt Mueller
    • Arndt Mueller
    • H04L9/00
    • H04L25/03866H04L5/0007H04L5/0037
    • Systems and methods are provided that allow multiple transmitting network devices to transmit under an orthogonal frequency divisional multiple access (OFDMA) mode to a receiving network device. The multiple transmitting network devices may be configured to perform constellation scrambling on the symbols they will be transmitting using a predetermined scrambling sequence. They may be further configured to synchronize their use of the sequence, for example, by advancing the sequence for each available subcarrier, such that the receiving device may view the payload as if it were sent by a single transmitter. Accordingly, these multiple transmissions may be descrambled using only one instance of a sequence generator.
    • 提供了允许多个发送网络设备在正交频分多址(OFDMA)模式下向接收网络设备进行发送的系统和方法。 多个发送网络设备可以被配置为使用预定的加扰序列对他们将要发送的符号执行星座加扰。 它们可被进一步配置成使其序列的使用同步,例如通过推进每个可用子载波的序列,使得接收设备可以像单个发射机一样发送净荷。 因此,可以仅使用序列发生器的一个实例来解扰这些多个传输。
    • 8. 发明授权
    • IQ imbalance equalization system and method
    • IQ不平衡均衡系统和方法
    • US08204102B2
    • 2012-06-19
    • US12324657
    • 2008-11-26
    • Mark O'LearyArndt Mueller
    • Mark O'LearyArndt Mueller
    • H03H7/30
    • H04L27/0014H04L27/2647H04L2027/0024
    • Systems and methods for performing channel equalization in a communication system are presented. More particularly, embodiments of the disclosed method and apparatus are directed toward systems and methods for performing channel equalization in an OFDM system. One example of a method of negating the effects of IQ imbalance can include the operations of transmitting a channel estimation string across a channel. The channel estimation string comprises a plurality of known channel estimation symbols. The method further includes logically inverting predetermined symbols within the known channel estimation string; transmitting a second channel estimation string across the channel, the second channel estimation string including the logically inverted predetermined symbols; and estimating the IQ image noise based on received first and second channel estimation symbols.
    • 提出了在通信系统中执行信道均衡的系统和方法。 更具体地,所公开的方法和装置的实施例涉及用于在OFDM系统中执行信道均衡的系统和方法。 否定IQ不平衡影响的方法的一个例子可以包括在信道上发送信道估计串的操作。 信道估计串包括多个已知的信道估计符号。 该方法还包括逻辑反转已知信道估计串中的预定符号; 在所述信道上发送第二信道估计串,所述第二信道估计串包括逻辑反转的预定符号; 以及基于接收的第一和第二信道估计符号估计IQ图像噪声。
    • 9. 发明授权
    • High efficiency preambles for communications systems over pseudo-stationary communication channels
    • 通信系统在伪静态通信信道上的高效率前导码
    • US08179920B2
    • 2012-05-15
    • US12557288
    • 2009-09-10
    • Arndt Mueller
    • Arndt Mueller
    • H04J3/24H04J3/00
    • H04L12/2801H04L25/0226H04L27/2613H04L27/2662
    • A method includes appending a preamble to a data packet and transmitting the preamble and data packet over a communication channel in the network. The preamble may be a Beacon, Admission, Broadcast, or High-Throughput Preamble. The Beacon Preamble includes the following symbols SS, SS, SS, SS, SS, SS, SS, SS, SS, SS, SS, SS, LS1, LS1, LS1, LS1, LS1, LS1, LS1, LS1, CP0, CEBeacon, CEBeacon. The Admission Preamble includes the following symbols SS, SS, SS, SS, SS, SS, SS, SS, SS, SS, SS, SS, LS1, LS1, LS1, LS1, LS1, LS1, LS1, LS1, CP0, CE, CE. The Broadcast Preamble includes the following symbols LS1, LS1, LS1, LS1, CP0, CE, CE. The high-throughput preamble includes the following symbols CP0, CE. The SS symbol includes 64 bits, the LS1, LS2, and CP0 symbols include 192 bits, the CE symbol includes 512 bits, and the CEBeacon symbol is a subset of CE.
    • 一种方法包括将前导码附加到数据分组,并通过网络中的通信信道发送前同步码和数据分组。 前导码可以是信标,接收,广播或高吞吐量前缀。 信标前导码包括以下符号SS,SS,SS,SS,SS,SS,SS,SS,SS,SS,SS,SS,LS1,LS1,LS1,LS1,LS1,LS1,LS1,LS1,CP0,CEBeacon ,CEBeacon。 入场前导码包括以下符号SS,SS,SS,SS,SS,SS,SS,SS,SS,SS,SS,SS,LS1,LS1,LS1,LS1,LS1,LS1,LS1,LS1,CP0,CE ,CE。 广播前导码包括以下符号LS1,LS1,LS1,LS1,CP0,CE,CE。 高吞吐量前置码包括以下符号CP0,CE。 SS符号包括64位,LS1,LS2和CP0符号包括192位,CE符号包括512位,CEBeacon符号是CE的子集。