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    • 11. 发明申请
    • Forward error correction coding in communication networks
    • 通信网络中的前向纠错编码
    • US20050111345A1
    • 2005-05-26
    • US10723133
    • 2003-11-25
    • Eric JacobsenJohn Sadowsky
    • Eric JacobsenJohn Sadowsky
    • H04L1/00H04L1/18H04L27/26H04J11/00
    • H04L1/005H04L1/0041H04L1/0057H04L27/2602
    • Methods, apparatus and systems are disclosed for block encoding/decoding information wireless networks having narrow decoding latency restrictions. A method includes identifying a length of information to be sent in a block code and encoding the information to be sent in the block code into one or more codewords, where the number of codewords and the amount of information encoded within each codeword is adjusted based on the identified length and to achieve a similar codeword error probability for each codeword considering available decoding time for decoding a last codeword is less than available decoding time for decoding a first codeword. In certain implementations low density parity check (LDPC) encoding may be used in combination with OFDM to provide reliable communications in a high throughput WLAN.
    • 公开了用于具有窄解码延迟限制的块编码/解码信息无线网络的方法,装置和系统。 一种方法包括识别要在块码中发送的信息的长度,并将要在块码中发送的信息编码成一个或多个码字,其中码字的数量和在每个码字内编码的信息量基于 考虑用于解码最后一个码字的可用解码时间,识别的长度并且为每个码字实现类似的码字错误概率小于用于解码第一码字的可用解码时间。 在某些实施方式中,低密度奇偶校验(LDPC)编码可以与OFDM组合使用以在高吞吐量WLAN中提供可靠的通信。
    • 18. 发明申请
    • Channel adaptation using variable sounding signal rates
    • 使用可变探测信号频率的信道适配
    • US20050170781A1
    • 2005-08-04
    • US10769414
    • 2004-01-30
    • Eric JacobsenShahrnaz Azizi
    • Eric JacobsenShahrnaz Azizi
    • H04L1/00H04L1/20H04L25/02H04L27/26H04B7/00H04B17/00H04Q7/20
    • H04L1/20H04L1/0001H04L25/0216H04L25/0226H04L27/2613
    • Systems, devices and methods for updating link adaptations in multi-carrier modulated signals between an access point (AP) and a wireless local area network (WLAN) station (STA) include (are configured for) periodically transmitting a channel sounding signal from the AP. The STA receives each unsolicited channel sounding signal and evaluates the current channel conditions between the AP and STA. The AP adjusts a rate of transmission of the channel sounding signals in accordance with the channel coherence time so that the channel estimates performed by the STA will be valid within the time varying characteristics of the channel. Depending on the length of the coherence time for network environment, the channel sounding signals may be AP beacons, low overhead signal fragments with no payload, or a combination of both.
    • 用于更新在接入点(AP)和无线局域网(WLAN)站(STA)之间的多载波调制信号中的链路自适应的系统,设备和方法包括(被配置用于)周期性地从AP接收信道探测信号 。 STA接收每个未经请求的信道探测信号,并评估AP和STA之间的当前信道状况。 AP根据信道相干时间调整信道探测信号的传输速率,使得由STA执行的信道估计将在信道的时变特性内有效。 根据网络环境的相干时间的长度,信道探测信号可以是AP信标,没有有效负载的低开销信号片段或两者的组合。
    • 20. 发明申请
    • Locating interfering devices in wireless networks using channel adaptation metrics
    • 使用信道适应度量来定位无线网络中的干扰设备
    • US20050143011A1
    • 2005-06-30
    • US10748867
    • 2003-12-29
    • Eric Jacobsen
    • Eric Jacobsen
    • H04B1/10H04L1/00H04L12/28H04L27/26H04Q7/20
    • H04L1/0025H04L27/2608
    • A method, apparatus and system relate to detecting an interfering device in a wireless network such as a wireless local area network (WLAN). In wireless networks using orthogonal frequency division multiplexing (OFDM) and adaptive bit loading (ABL), adaptive modulation information should be somewhat symmetric in uplink and downlink directions. By comparing modulation adaptations in the uplink and downlink directions of a communication channel between at least two terminals, identified differences can indicate the presence of a potential interferer in the wireless network. A location of the potential interferer can be estimated if a location of one or more network terminals experiencing interference is known or can be determined. An exemplary implementation for a device of the invention may be as an Access Point (AP) in the WLAN.
    • 一种检测诸如无线局域网(WLAN)等无线网络中的干扰装置的方法,装置和系统。 在使用正交频分复用(OFDM)和自适应比特加载(ABL)的无线网络中,自适应调制信息在上行链路和下行链路方向上应该有些对称。 通过比较在至少两个终端之间的通信信道的上行链路和下行链路方向上的调制调整,所识别的差异可以指示无线网络中存在潜在的干扰源。 如果遇到干扰的一个或多个网络终端的位置是已知的或者可以被确定,则可以估计潜在干扰源的位置。 本发明的设备的示例性实现可以是WLAN中的接入点(AP)。