公开(公告)号：US20060233268A1

公开(公告)日：2006-10-19

申请号：US11108291

申请日：2005-04-18

申请人： Colin Frank ,  Robert Corke ,  Steven Jasper ,  Isam Makhlouf

发明人： Colin Frank ,  Robert Corke ,  Steven Jasper ,  Isam Makhlouf

IPC分类号： H04K1/10

CPC分类号： H04L25/0236 ,  H04L27/2647

摘要： A receiver configured for: a) receiving (410) a first OFDM symbol and generating a plurality of demodulated symbols for the first OFDM symbol; b) generating (420) decoder output code symbols corresponding to a subset of the plurality of demodulated symbols; c) determining (430) that a set of the decoder output code symbols make up a set of reference symbols corresponding to at least a portion of the subset of the plurality of demodulated symbols; d) generating (440) the set of reference symbols; e) generating (450) a set of channel estimates based on the set of reference symbols and the at least a portion of the subset of the plurality of demodulated symbols, for use in decoding a current OFDM symbol; and f) repeating steps b-e until a channel estimate for each demodulated symbol corresponding to the first OFDM symbol has been generated.

摘要翻译： 一种接收机，被配置用于：a）接收（410）第一OFDM符号并产生用于所述第一OFDM符号的多个解调符号; b）产生（420）对应于所述多个解调符号的子集的解码器输出码符号; c）确定（430）一组解码器输出码符号组成对应于多个解调符号的子集的至少一部分的一组参考符号; d）产生（440）所述参考符号集合; e）基于参考符号集合和所述多个解调符号的子集的至少一部分来生成（450）一组信道估计，用于解码当前OFDM符号; 以及f）重复步骤b-e，直到已经产生对应于第一OFDM符号的每个解调符号的信道估计为止。

公开(公告)号：US20060222093A1

公开(公告)日：2006-10-05

申请号：US11098208

申请日：2005-04-04

申请人： Steven Jasper ,  Robert Corke ,  Colin Frank ,  Isam Makhlouf

发明人： Steven Jasper ,  Robert Corke ,  Colin Frank ,  Isam Makhlouf

IPC分类号： H04K1/10 ,  H04B1/10

CPC分类号： H04L25/0224 ,  H04L27/2647

摘要： A system that includes a receiver (100) that is configured for: selecting (210) a set of demodulator output samples and a corresponding set of reference symbols; generating (220) a set of raw channel estimates based on the set of demodulator output samples and the corresponding set of reference symbols; subdividing (230) the set of raw channel estimates into a plurality of subsets; assigning and applying (240) a corresponding reference symbol magnitude quantization scheme to each subset; determining (250) a set of filter coefficients that is based on the quantization schemes applied to the subsets of raw channel estimates; and combining (260) the set of raw channel estimates with the set of filter coefficients to generate a channel estimate.

摘要翻译： 一种包括接收机（100）的系统，其被配置为：选择（210）一组解调器输出采样和相应的一组参考符号; 基于所述解调器输出样本集合和相应的参考符号集合来生成（220）一组原始信道估计; 将所述原始信道估计集合（230）细分为多个子集; 向每个子集分配和应用（240）对应的参考符号量化量化方案; 确定（250）基于应用于原始信道估计的子集的量化方案的一组滤波器系数; 以及将所述原始信道估计集合与所述滤波器系数集合（260）以生成信道估计。

公开(公告)号：US20050015589A1

公开(公告)日：2005-01-20

申请号：US10621734

申请日：2003-07-17

申请人： Shmuel Silverman ,  Robert Corke ,  Ron Rotstein

发明人： Shmuel Silverman ,  Robert Corke ,  Ron Rotstein

IPC分类号： H04L1/16 ,  H04L1/18 ,  H04L9/08 ,  H04L9/12 ,  H04L9/00

CPC分类号： H04L1/1829 ,  H04L1/1607 ,  H04L1/1803 ,  H04L1/188 ,  H04L9/0838 ,  H04L9/12

摘要： A transmitting device (100) transmits a first packet, comprising a second encryption vector, that is encrypted using a first encryption vector. The transmitting device transmits a second packet that is encrypted using the second encryption vector if an acknowledgement message is received within a predetermined time after transmitting the first packet; otherwise, the first packet is re-transmitted. Upon receipt of the first packet, a receiving device (102) decrypts the first packet using the first encryption vector and transmits the acknowledgement message. Upon receipt of the second packet; the receiving device attempts to decrypt a portion of the second packet using the first and second encryption vectors. If the portion of the second packet was successfully decrypted using the first encryption vector, the receiving device re-transmits the acknowledgement message for the first packet; otherwise, it transmits an acknowledgement message for the second packet.

摘要翻译： 发送设备（100）使用第一加密向量来发送包括第二加密向量的第一分组。 如果在发送第一分组之后的预定时间内接收到确认消息，则发送装置发送使用第二加密向量加密的第二分组; 否则，第一个数据包被重新发送。 在接收到第一分组时，接收设备（102）使用第一加密向量解密第一分组，并发送确认消息。 在接收到第二分组时; 接收设备尝试使用第一和第二加密向量解密第二分组的一部分。 如果第二分组的部分使用第一加密向量成功解密，则接收设备重新发送第一分组的确认消息; 否则，它发送用于第二分组的确认消息。

公开(公告)号：US20070060155A1

公开(公告)日：2007-03-15

申请号：US11216625

申请日：2005-08-31

申请人： Emanuel Kahana ,  Robert Corke ,  Daniel Prysby ,  Ron Rotstein

发明人： Emanuel Kahana ,  Robert Corke ,  Daniel Prysby ,  Ron Rotstein

IPC分类号： H04Q7/20

CPC分类号： H04W72/085 ,  H04W74/08 ,  H04W84/12 ,  H04W88/02

摘要： The present invention relates to a method, device and system for dynamically adapting a clear channel assessment threshold of a wireless communications channel by determining the status of a busy channel indicator for at least a first parameter (105) and dynamically changing the clear channel assessment threshold based on the status of the busy channel indicator (110).

摘要翻译： 本发明涉及一种用于通过确定至少第一参数（105）的忙信道指示符的状态来动态地改变无线通信信道的清除信道评估阈值的方法，设备和系统，并动态地改变清除信道评估阈值 基于忙信道指示符（110）的状态。

公开(公告)号：US20050207333A1

公开(公告)日：2005-09-22

申请号：US10806308

申请日：2004-03-22

申请人： Ron Rotstein ,  Robert Corke ,  Arie Schwartzman

发明人： Ron Rotstein ,  Robert Corke ,  Arie Schwartzman

IPC分类号： H04B7/06 ,  H04B7/08 ,  H04J11/00 ,  H04L27/26

CPC分类号： H04B7/08 ,  H04B7/06 ,  H04L27/2602

摘要： A method and apparatus for communicating in an OFDM system whereby subcarriers of the OFDM system are multiplexed between at least a first and a second transmit antenna. The subcarriers are separated between the at least two transmit antennas so that a subcarrier and a mirror subcarrier are not transmitted on the same transmit antenna and that adjacent subcarriers on the same antenna are at least two subcarrier frequency bandwidths apart. The method and apparatus for communicating is compatible with either a single receive antenna or with more than one receive antennas. In an embodiment, the method and apparatus further includes receiving the transmitted subcarriers from at least a first and second receive antenna. The subcarriers may also be separated so that the subcarrier and the mirror subcarrier are not received from the same receive antenna and that adjacent subcarriers on the same antenna are at least two subcarrier frequency bandwidths apart. The method and apparatus further includes combining the received transmitted subcarriers from the at least two receive antennas into a single data stream.

摘要翻译： 一种用于在OFDM系统中进行通信的方法和装置，其中OFDM系统的子载波在至少第一和第二发射天线之间被复用。 子载波在至少两个发射天线之间分离，使得副载波和镜像载波不在同一发射天线上发射，并且相同天线上的相邻子载波间隔至少两个副载波频率带宽。 用于通信的方法和装置与单个接收天线或多于一个接收天线兼容。 在一个实施例中，所述方法和装置还包括从至少第一和第二接收天线接收所发送的子载波。 子载波也可以被分离，使得副载波和镜像副载波不从相同的接收天线接收，并且相同天线上的相邻子载波间隔开至少两个副载波频带宽度。 所述方法和装置还包括将来自所述至少两个接收天线的所接收的发送子载波组合成单个数据流。

公开(公告)号：US20050002478A1

公开(公告)日：2005-01-06

申请号：US10611760

申请日：2003-07-01

申请人： Gregory Agami ,  Robert Corke ,  George Powley

发明人： Gregory Agami ,  Robert Corke ,  George Powley

IPC分类号： H03G3/00 ,  H04L25/02 ,  H04L27/38 ,  H04L27/08

CPC分类号： H04L27/3809 ,  H03G3/005 ,  H04L25/0214

摘要： A method, apparatus and system for use in determining a pilot-to-data power ratio by receiving a data symbol (122) having a data amplitude, receiving a pilot signal (124) having a pilot amplitude, reverse training (350) an automatic gain (154) based on the data amplitude and the pilot amplitude, and determining a pilot-to-data power ratio (250) according to the reverse training of the automatic gain. In some embodiments the method further compensates for channel fading in the data symbol by providing for channel correction (340) on the data symbol, providing for channel correction (344) on the pilot signal and dividing the channel corrected data symbol by the channel corrected pilot signal providing a fading compensated data symbol, where the fading compensated data symbol (150) is provided prior to reverse training such that the reverse training is based at least in part on the fading compensated data symbol.

摘要翻译： 一种用于通过接收具有数据幅度的数据符号（122）来确定导频到数据功率比的方法，装置和系统，接收具有导频幅度的导频信号（124），反向训练（350），自动 基于数据幅度和导频幅度的增益（154），以及根据自动增益的反向训练确定导频数据功率比（250）。 在一些实施例中，该方法通过在数据符号上提供信道校正（340）来进一步补偿数据符号中的信道衰落，为导频信号提供信道校正（344），并将通道校正数据符号除以通道校正导频 信号提供衰落补偿数据符号，其中在反向训练之前提供衰落补偿数据符号（150），使得反向训练至少部分地基于衰落补偿数据符号。