公开(公告)号：US20120039192A1

公开(公告)日：2012-02-16

申请号：US13146846

申请日：2009-01-28

申请人： Ying Peng ,  Simon Armour ,  Joe McGeehan ,  Tomoyoshi Yokota ,  Fangwei Tong

发明人： Ying Peng ,  Simon Armour ,  Joe McGeehan ,  Tomoyoshi Yokota ,  Fangwei Tong

IPC分类号： H04J1/12

CPC分类号： H04L25/022 ,  H04L25/03159 ,  H04L27/2657 ,  H04L27/2695 ,  H04L2025/03426

摘要： There is provided a first device for use in a communication system, the communication system further comprising a plurality of second devices, the system having a plurality of orthogonal frequency carriers available for transmissions, each second device having a respective carrier frequency offset estimated from signals received from the first device, each of the second devices transmitting a respective stream of symbols using the respective estimated carrier frequency offset and one or more frequency carriers selected from the plurality of orthogonal frequency carriers, the first device comprising receiver circuitry for receiving respective signals from each of the second devices; a channel estimator for generating, from the received signals, an estimate of the channel over which the signals have been transmitted; an interference estimator for generating, from the received signals, an estimate of interference at the first device caused by errors in the carrier frequency offsets estimated by each second device; and circuitry for equalising the received signals using the estimate of the channel and the estimate of the interference.

摘要翻译： 提供了一种在通信系统中使用的第一设备，所述通信系统还包括多个第二设备，所述系统具有可用于传输的多个正交频率载波，每个第二设备具有从接收到的信号估计的相应的载波频率偏移 从第一设备，每个第二设备使用相应的估计的载波频率偏移和从多个正交频率载波中选择的一个或多个频率载波来发送相应的符号流，第一设备包括接收机电路，用于从每个 的第二设备; 信道估计器，用于从所接收的信号中产生已经发送信号的信道的估计; 干扰估计器，用于从接收到的信号中产生由由每个第二设备估计的载波频率偏移中的误差引起的在第一设备处的干扰的估计; 以及用于使用信道的估计和干扰估计来均衡接收信号的电路。

公开(公告)号：US20090034456A1

公开(公告)日：2009-02-05

申请号：US11817001

申请日：2005-02-25

申请人： Ying Peng ,  Simon Armour ,  Joe McGeehan ,  Tomoyoshi Yokota

发明人： Ying Peng ,  Simon Armour ,  Joe McGeehan ,  Tomoyoshi Yokota

IPC分类号： H04W72/04 ,  H04L27/28

CPC分类号： H04L5/0085 ,  H04B1/715 ,  H04B2001/7154 ,  H04L5/0023 ,  H04L5/0037 ,  H04L5/006

摘要： In a multi user communication system, subcarriers are allocated to subchannels using a quality measurement for each subchannel. An initial sub carrier is allocated to each subchannel, and a quality metric measured. Subsequent subcarriers are allocated in dependence upon the quality measurement for each subchannel. The subchannel with the lowest quality measurement receives the first allocation, and the subchannel with the highest quality measurement receives the last allocation. The subsequent allocation is repeated, following a re-sort of the subchannel quality measurements, until all of the subcarriers are allocated.

公开(公告)号：US08306131B2

公开(公告)日：2012-11-06

申请号：US11817001

申请日：2005-02-25

申请人： Ying Peng ,  Simon Armour ,  Joe McGeehan ,  Tomoyoshi Yokota

发明人： Ying Peng ,  Simon Armour ,  Joe McGeehan ,  Tomoyoshi Yokota

IPC分类号： H04K1/10

CPC分类号： H04L5/0085 ,  H04B1/715 ,  H04B2001/7154 ,  H04L5/0023 ,  H04L5/0037 ,  H04L5/006

摘要： In a multi user communication system, subcarriers are allocated to subchannels using a quality measurement for each subchannel. An initial sub carrier is allocated to each subchannel, and a quality metric measured. Subsequent subcarriers are allocated in dependence upon the quality measurement for each subchannel. The subchannel with the lowest quality measurement receives the first allocation, and the subchannel with the highest quality measurement receives the last allocation. The subsequent allocation is repeated, following a re-sort of the subchannel quality measurements, until all of the subcarriers are allocated.

摘要翻译： 在多用户通信系统中，使用每个子信道的质量测量将副载波分配给子信道。 将初始子载波分配给每个子信道，并测量质量度量。 依赖于每个子信道的质量测量来分配随后的子载波。 具有最低质量测量的子信道接收第一分配，并且具有最高质量测量的子信道接收最后的分配。 在对子信道质量测量进行重新排序之后，直到所有副载波被分配为止重复后续分配。

公开(公告)号：US08023523B2

公开(公告)日：2011-09-20

申请号：US11817007

申请日：2005-02-25

申请人： Ying Peng ,  Simon Armour ,  Joe McGeehan ,  Tomoyoshi Yokota

发明人： Ying Peng ,  Simon Armour ,  Joe McGeehan ,  Tomoyoshi Yokota

IPC分类号： H04L12/56 ,  H04J1/16

CPC分类号： H04L5/0085 ,  H04L5/0023 ,  H04L5/0037 ,  H04L5/006

摘要： In a multi user communication system, subcarriers are allocated to subchannels using a quality measurement for each subchannel. An initial sub carrier is allocated to each subchannel, and a quality metric measured. Subsequent subcarriers are allocated in dependence upon the quality measurement for each subchannel. The subchannel with the lowest quality measurement receives the first allocation, and the subchannel with the highest quality measurement receives the last allocation. The subsequent allocation is repeated, following a re-sort of the subchannel quality measurements, until all of the subcarriers are allocated.

摘要翻译： 在多用户通信系统中，使用每个子信道的质量测量将副载波分配给子信道。 将初始子载波分配给每个子信道，并测量质量度量。 依赖于每个子信道的质量测量来分配随后的子载波。 具有最低质量测量的子信道接收第一分配，并且具有最高质量测量的子信道接收最后的分配。 在对子信道质量测量进行重新排序之后，直到所有副载波被分配为止重复后续分配。

公开(公告)号：US20090207829A1

公开(公告)日：2009-08-20

申请号：US11817007

申请日：2005-02-25

申请人： Ying Peng ,  Simon Armour ,  Joe McGeehan ,  Tomoyoshi Yokota

发明人： Ying Peng ,  Simon Armour ,  Joe McGeehan ,  Tomoyoshi Yokota

IPC分类号： H04J11/00 ,  H04L27/28

CPC分类号： H04L5/0085 ,  H04L5/0023 ,  H04L5/0037 ,  H04L5/006

摘要： In a multi user communication system, subcarriers are allocated to subchannels using a quality measurement for each subchannel. An initial sub carrier is allocated to each subchannel, and a quality metric measured. Subsequent subcarriers are allocated in dependence upon the quality measurement for each subchannel. The subchannel with the lowest quality measurement receives the first allocation, and the subchannel with the highest quality measurement receives the last allocation. The subsequent allocation is repeated, following a re-sort of the subchannel quality measurements, until all of the subcarriers are allocated.

摘要翻译： 在多用户通信系统中，使用每个子信道的质量测量将副载波分配给子信道。 将初始子载波分配给每个子信道，并测量质量度量。 依赖于每个子信道的质量测量来分配随后的子载波。 具有最低质量测量的子信道接收第一分配，并且具有最高质量测量的子信道接收最后的分配。 在对子信道质量测量进行重新排序之后，直到所有副载波被分配为止重复后续分配。

公开(公告)号：US20060074959A1

公开(公告)日：2006-04-06

申请号：US10526266

申请日：2003-09-01

申请人： Paul Fletcher ,  Michael Dean ,  Robert Piechocki ,  Andrew Nix ,  Nishan Canagarajah ,  Joe McGeehan

发明人： Paul Fletcher ,  Michael Dean ,  Robert Piechocki ,  Andrew Nix ,  Nishan Canagarajah ,  Joe McGeehan

IPC分类号： G06F17/30

CPC分类号： H04L1/0048 ,  H04L1/0054 ,  H04L1/0618

摘要： A signal processing apparatus comprises a plurality of receiving elements, weighting means, and decoding means. Each of the receiving elements has respective weighting means associated therewith at the decoding means, and is arranged to receive a plurality of signals transmitted from a plurality of transmitters. The weighting means are arranged to apply a complex weighting function to each of a number of the signals received by the receiving elements at a given frequency in order to null the number of signals. The decoding means are arranged to determine a symbol or codeword associated with a non-nulled signal and to incorporate the symbol or codeword in the determination of at least one further symbol or codeword.

摘要翻译： 信号处理装置包括多个接收元件，加权装置和解码装置。 每个接收元件在解码装置处具有与其相关联的各自的加权装置，并且被布置为接收从多个发射器发射的多个信号。 加权装置被布置为以给定频率对接收元件接收的多个信号中的每一个应用复加权函数，以使信号数量为零。 解码装置被布置为确定与非零零信号相关联的符号或码字，并且在确定至少一个另外的符号或码字时并入符号或码字。