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    Method and apparatus for performing chip level equalization using joint processing
    132.
    发明申请
    Method and apparatus for performing chip level equalization using joint processing 失效

    公开(公告)号：US20060126568A1

    公开(公告)日：2006-06-15

    申请号：US11259430

    申请日：2005-10-26

    申请人： Jung-Lin Pan ,  Robert DiFazio

    发明人： Jung-Lin Pan ,  Robert DiFazio

    IPC分类号： H04B7/216

    CPC分类号： H04B7/0854 ,  H04B1/71052 ,  H04B1/71055 ,  H04L25/0206 ,  H04L25/03171 ,  H04L2025/03426

    摘要： A method and apparatus for performing chip level equalization (CLE) using joint processing to enhance performance and system throughput using a transmitter having a plurality of transmit antennas and a receiver having a plurality of receive antennas. A channel response matrix is formed between the transmit antennas and the receive antennas to generate a joint channel correlation matrix between the transmit antennas and the receive antennas using a block-FFT (B-FFT) decomposition of the channel response matrix. Estimates of transmitted chip sequences from each of the transmit antennas are generated using minimum mean square error (MMSE) and the joint channel correlation matrix are combined. The combined estimate of the transmitted chip sequences are despread to recover transmitted data.

    Single user detection circuit
    133.
    发明授权
    Single user detection circuit 有权
    单用户检测电路

    公开(公告)号：US07054300B2

    公开(公告)日：2006-05-30

    申请号：US11100901

    申请日：2005-04-07

    申请人： Jung-Lin Pan ,  Parthapratim De ,  Ariela Zeira

    发明人： Jung-Lin Pan ,  Parthapratim De ,  Ariela Zeira

    IPC分类号： H04B7/216

    CPC分类号： H04B1/71052 ,  H04B1/71055

    摘要： A circuit for use in a receiver receives a plurality of code division multiple access data signals simultaneously. Each data signal experiences a similar channel response. The circuit receives a combined signal over the shared spectrum in a time slot. The combined signal comprises the plurality of data signals. The combined signal is sampled at a multiple of a chip rate of the combined signal. The similar channel response is estimated. A channel response matrix or a channel correlation matrix is constructed based in part on the estimated channel response. A spread data vector is determined based in part on a fast Fourier transform (FFT) decomposition of a circulant version of the channel response matrix or channel correlation matrix. The spread data vector is despread to recover data from the matrix.

    摘要翻译： 用于接收机的电路同时接收多个码分多址数据信号。 每个数据信号经历类似的信道响应。 电路在时隙中通过共享频谱接收组合信号。 组合信号包括多个数据信号。 组合信号以组合信号的码片速率的倍数进行采样。 估计类似的信道响应。 部分基于估计的信道响应构建信道响应矩阵或信道相关矩阵。 部分地基于信道响应矩阵或信道相关矩阵的循环版本的快速傅里叶变换（FFT）分解来确定扩展数据向量。 扩展数据向量被解扩以从矩阵中恢复数据。

    Method and apparatus for estimating channelization codes in a wireless transmit/receive unit
    134.
    发明申请
    Method and apparatus for estimating channelization codes in a wireless transmit/receive unit 失效
    用于估计无线发射/接收单元中的信道化码的方法和装置

    公开(公告)号：US20060109806A1

    公开(公告)日：2006-05-25

    申请号：US11095400

    申请日：2005-03-31

    申请人： Jaeyoung Kwak ,  Donald Grieco ,  Jung-Lin Pan ,  Ariela Zeira

    发明人： Jaeyoung Kwak ,  Donald Grieco ,  Jung-Lin Pan ,  Ariela Zeira

    IPC分类号： H04B7/00

    CPC分类号： H04B1/7103 ,  H04B1/70735 ,  H04B17/327 ,  H04B2201/70701

    摘要： A method and apparatus for estimating channelization codes in a wireless transmit/receive unit (WTRU) using blind code detection (BCD). A WTRU receives communication bursts and detects a midamble in the received burst. A candidate code list is generated in accordance with the detected midamble. The candidate code list includes channelization codes intended for both the intended WTRU and other WTRUs. Active channelization codes among the codes in the candidate list are identified, and the identified codes are forwarded to a multi-user detector (MUD). The present invention resolves SF ambiguity in the downlink of TSM. Since the orthogonal variable spreading factor code maintains the orthogonality between codes of different SF, SFs of other WTRUs follow the SF of the intended WTRU. Moreover, since the data for other WTRUs is not used in symbol processing after MUD, the performance of MUD for the intended WTRU is preserved with the SF ambiguity of other WTRUs.

    摘要翻译： 一种使用盲码检测（BCD）估计无线发射/接收单元（WTRU）中的信道化码的方法和装置。 WTRU接收通信突发并检测接收到的突发中的中间码。 根据检测到的中间码产生候选码列表。 候选代码列表包括旨在用于预期的WTRU和其他WTRU的信道化代码。 识别候选列表中的代码之间的主动信道化代码，并将所识别的代码转发到多用户检测器（MUD）。 本发明解决了TSM下行链路中的SF模糊性。 由于正交可变扩频因子码维持不同SF的码之间的正交性，其他WTRU的SF遵循预期的WTRU的SF。 此外，由于在MUD之后的其他WTRU的数据不用于符号处理，所以对于预定的WTRU的MUD的性能被保留在其他WTRU的SF模糊度上。

    Single user detection base station
    136.
    发明授权
    Single user detection base station 有权
    单用户检测基站

    公开(公告)号：US06904036B2

    公开(公告)日：2005-06-07

    申请号：US10077527

    申请日：2002-02-15

    申请人： Jung-Lin Pan ,  Parthapratim De ,  Ariela Zeira

    发明人： Jung-Lin Pan ,  Parthapratim De ,  Ariela Zeira

    IPC分类号： H04B1/707 ,  H04B1/7097 ,  H04B7/204 ,  H04L5/22 ,  H04Q7/38 ,  H04L12/28

    CPC分类号： H04B1/71052 ,  H04B1/71055

    摘要： A time division duplex using code division multiple access base station receives a plurality of data signals in a time slot. Each data signal experiences a similar channel response. The base station receives a combined signal over the shared spectrum in a time slot. The combined signal comprises the plurality of data signals. The combined signal is sampled at a multiple of a chip rate of the combined signal. The similar channel response is estimated. A channel response matrix or a channel correlation matrix is constructed based on in part the estimated channel response. A spread data vector is determined based on in part a fast fourier transform (FFT) decomposition of a circulant version of the channel response or channel correlation matrix. The spread data vector is despread to recover data from the matrix.

    摘要翻译： 使用码分多址基站的时分双工在时隙中接收多个数据信号。 每个数据信号经历类似的信道响应。 基站在时隙中通过共享频谱接收组合信号。 组合信号包括多个数据信号。 组合信号以组合信号的码片速率的倍数进行采样。 估计类似的信道响应。 基于估计的信道响应部分构建信道响应矩阵或信道相关矩阵。 基于信道响应或信道相关矩阵的循环版本的部分快速傅立叶变换（FFT）分解来确定扩展数据向量。 扩展数据向量被解扩以从矩阵中恢复数据。

    Segment-wise channel equalization based data estimation
    138.
    发明授权
    Segment-wise channel equalization based data estimation 有权
    基于分段信道均衡的数据估计

    公开(公告)号：US06757321B2

    公开(公告)日：2004-06-29

    申请号：US10153112

    申请日：2002-05-22

    申请人： Jung-Lin Pan ,  Ariela Zeira

    发明人： Jung-Lin Pan ,  Ariela Zeira

    IPC分类号： H04L2730

    CPC分类号： H04B1/7105 ,  H04B1/707

    摘要： Data is estimated of a plurality of received spread spectrum signals. The plurality of received communications are received in a shared spectrum. The received communications are sampled to produce a received vector. The received vector is processed to produce a plurality of segments. Each segment is processed separately to estimate data of the received communications.

    摘要翻译： 估计多个接收的扩频信号的数据。 多个接收到的通信在共享频谱中被接收。 接收到的通信被采样以产生接收的向量。 处理所接收的矢量以产生多个段。 每个段被单独处理以估计接收到的通信的数据。

    Fast joint detection
    139.
    发明授权
    Fast joint detection 失效
    快速联合检测

    公开(公告)号：US06625203B2

    公开(公告)日：2003-09-23

    申请号：US10037710

    申请日：2001-12-31

    申请人： Parthapratim De ,  Jung-Lin Pan ,  Ariela Zeira

    发明人： Parthapratim De ,  Jung-Lin Pan ,  Ariela Zeira

    IPC分类号： H04B1400

    CPC分类号： H04B1/7105

    摘要： K data signals are transmitted over a shared spectrum in a code division multiple access communication system. A combined signal is received and sampled over the shared spectrum. The combined signal has the K transmitted data signals. A combined channel response matrix is produced using the codes and impulse responses of the K transmitted data signals. A block column of a combined channel correlation matrix is determined using the combined channel response matrix. Each block entry of the block column is a K by K matrix. At each frequency point k, a K by K matrix &Lgr;(k) is determined by taking the fourier transform of the block entries of the block column. An inverse of &Lgr;(k) is multiplied to a result of the fourier transform. Alternately, forward and backward substitution can be used to solve the system. An inverse fourier transform is used to recover the data from the K data signals.

    摘要翻译： 在码分多址通信系统中，通过共享频谱发送K个数据信号。 组合信号在共享频谱上被接收和采样。 组合信号具有K个发送的数据信号。 使用K个发送的数据信号的代码和脉冲响应来产生组合的信道响应矩阵。 使用组合信道响应矩阵来确定组合信道相关矩阵的块列。 块列的每个块条目是K乘K矩阵。 在每个频点k处，通过对块列的块条目进行傅里叶变换来确定K乘K矩阵Lambd <（k）>。 将Lambd <（k）>的倒数乘以傅立叶变换的结果。 或者，可以使用前向和后向替换来解决系统。 使用逆傅立叶变换从K个数据信号中恢复数据。

    Pilot-directed and pilot/data-directed equalizers
    140.
    发明授权
    Pilot-directed and pilot/data-directed equalizers 有权
    导频和导频/数据导向均衡器

    公开(公告)号：US08213493B2

    公开(公告)日：2012-07-03

    申请号：US12415023

    申请日：2009-03-31

    申请人： Jung-Lin Pan ,  Mihaela C. Beluri ,  Philip J. Pietraski

    发明人： Jung-Lin Pan ,  Mihaela C. Beluri ,  Philip J. Pietraski

    IPC分类号： H03H7/30

    CPC分类号： H04L25/03038 ,  H04B1/712 ,  H04B2201/70701 ,  H04L25/03044 ,  H04L2025/03375 ,  H04L2025/03477 ,  H04L2025/03617

    摘要： A normalized least means square (NLMS) equalizer including two equalizer filters is disclosed. In one embodiment, a single correction term generator is used to generate correction terms for tap coefficient updates of each of the equalizer filters based on a pilot signal. In another embodiment, two different correction term generators are used to generate correction terms for each of the equalizer filters, whereby one of the correction term generators uses data received from a hard decision unit at the output of one of the equalizer filters to generate correction terms for both of the equalizer filters.

    摘要翻译： 公开了包括两个均衡器滤波器的归一化最小均方（NLMS）均衡器。 在一个实施例中，单个校正项生成器用于基于导频信号产生每个均衡器滤波器的抽头系数更新的校正项。 在另一个实施例中，使用两个不同的校正项发生器来产生每个均衡器滤波器的校正项，由此校正项发生器之一使用在均衡器滤波器之一的输出处从硬判决单元接收的数据来产生校正项 两个均衡器滤波器。