公开(公告)号：US20040165571A1

公开(公告)日：2004-08-26

申请号：US10754772

申请日：2004-01-09

Applicant: InterDigital Technology Corporation

Inventor： Alexander Reznik ,  Edward L. Hepler

IPC: H04J003/24

CPC classification number: H04L1/1829 ,  H04B1/707 ,  H04L1/0006 ,  H04L1/0025 ,  H04L1/0032 ,  H04L1/0071

Abstract: Components and method are provided to efficiently process wireless communications data where prior knowledge of the specific format of the communication data is not available. A wireless transmit receive unit (WTRU) is configured for use in a wireless communication system where communication data for selected channels is transmitted in system time frames in formats selected from among a set of predefined formats. The WTRU has a receiver, a memory, a received chip rate processor (RCRP), a format detector and a de-interleaver. The RCRP is preferably configured to despread each wireless signal of spread data received in each time frame using a minimum spreading code or other appropriate key sequence and to store resultant despread data for each respective time frame in the memory. The format detector is preferably configured to determine the number of physical channels and the respective spreading factor for each physical channel for the wireless signal of spread data received in each time frame. The de-interleaver is preferably configured to de-interleave the stored data despread by the RCRP for each respective time frame into the number of physical channels determined by the format detector for the respective time frame.

Abstract translation: 提供组件和方法以有效地处理无线通信数据，其中通信数据的特定格式的先前知识不可用。 无线发射接收单元（WTRU）被配置为在无线通信系统中使用，其中所选信道的通信数据以系统时间帧的形式从一组预定格式中选出。 WTRU具有接收机，存储器，接收的码片速率处理器（RCRP），格式检测器和解交织器。 优选地，RCRP被配置为使用最小扩展码或其他适当的密钥序列来解扩每个时间帧中接收的扩展数据的每个无线信号，并且将每个相应时间帧的合成解扩数据存储在存储器中。 格式检测器优选地被配置为确定在每个时间帧中接收的扩展数据的无线信号的物理信道的数量和每个物理信道的相应扩展因子。 解交织器优选地被配置为将用于每个相应时间帧的由RCRP解扩的存储的数据解交织成由各个时间帧由格式检测器确定的物理信道的数量。

公开(公告)号：US20040165567A1

公开(公告)日：2004-08-26

申请号：US10785866

申请日：2004-02-23

Applicant: InterDigital Technology Corporation

Inventor： Younglok Kim ,  June-Lin Pan ,  Ariela Zeira ,  Alexander Reznik

IPC: H04B007/216

CPC classification number: H04B1/71052 ,  H04B1/7105 ,  H04B2201/70703 ,  H04B2201/70705

Abstract: A plurality of communication signals have differing spreading codes. Each communication has an associated code comprising chips. For each chip of each communication, a vector of that chip convolved with an impulse response is produced. For each communication, support blocks comprising the chip vectors are produced. A number of the chip vectors in a support block is based on that communication's spreading factor. A system response matrix is assembled. The system response matrix has symbol sub-matrices. Each symbol sub-matrix comprises a support block from each communication. Data of the communications is detected using the symbol response matrix.

公开(公告)号：US20040156423A1

公开(公告)日：2004-08-12

申请号：US10718394

申请日：2003-11-20

Applicant: InterDigital Technology Corporation

Inventor： Bin Li ,  Alexander Reznik

IPC: H04B001/707

CPC classification number: H04L25/0232 ,  H04B1/712 ,  H04B2201/70701

Abstract: A channel estimation method which reduces the strain on resources of a Rake receiver using a complex weight gain (CWG) algorithm. In one embodiment, a nonadaptive algorithm is used to average blocks of pilot symbols from several slots. In another embodiment, an adaptive algorithm implements sliding window averaging or a recursive filter. Using a CWG algorithm reduces the memory and processor requirements of the Rake receiver.

Abstract translation: 一种信道估计方法，其使用复加权增益（CWG）算法来减少Rake接收机的资源的应变。 在一个实施例中，使用非自适应算法来平均来自几个时隙的导频符号块。 在另一个实施例中，自适应算法实现滑动窗口平均或递归滤波器。 使用CWG算法可以降低Rake接收机的内存和处理器要求。

公开(公告)号：US20030053526A1

公开(公告)日：2003-03-20

申请号：US10127308

申请日：2002-04-22

Applicant: InterDigital Technology Corporation

Inventor： Alexander Reznik

IPC: H04K001/00

CPC classification number: H04B1/71075 ,  H04B1/7093 ,  H04B1/7103 ,  H04B1/71052

Abstract: A parallel interference cancellation receiver that reduces impulse response interference using a model of the received signal similar to that used in block linear equalizers. Block linear equalizers comprise decorrelating receivers, zero-forcing receivers, minimum mean square error receivers and the like. The invention comprises an interference computation processor feedback loop for correcting the output of a direct interference canceller. The m iterative process removes interferers from the output symbols of a matched-filter. The PIC receiver uses received signal models of the various block linear equalizers that do not assume that each subchannel consists of several distinct paths. The receiver estimates the impulse response characteristic of each subchannel as a whole.

Abstract translation: 一种并行干扰消除接收器，其使用与块线性均衡器中使用的类似的接收信号的模型来减少脉冲响应干扰。 块线性均衡器包括去相关接收器，迫零接收器，最小均方误差接收器等。 本发明包括用于校正直接干扰消除器的输出的干扰计算处理器反馈回路。 m迭代过程从匹配滤波器的输出符号中去除干扰源。 PIC接收机使用不假定每个子信道由几个不同路径组成的各种线性均衡器的接收信号模型。 接收机估计整个子信道的脉冲响应特性。