公开(公告)号：US07376178B2

公开(公告)日：2008-05-20

申请号：US10867508

申请日：2004-06-14

Applicant: Bin Li ,  Robert A. DiFazio ,  Ariela Zeira

Inventor： Bin Li ,  Robert A. DiFazio ,  Ariela Zeira

IPC: H04B3/46 ,  H04B17/00 ,  H04Q1/20

CPC classification number: H04L1/20 ,  H04B17/336

Abstract: An apparatus and method for estimation of signal-to-noise ratio (SNR) with low bias that is effective for both positive SNRs and small to negative SNRs. The estimation is based on an iterative solution for the maximum likelihood estimate of the amplitude from which the SNR can be computed. The estimation is applicable for various modulated systems, including BPSK, QPSK and MPSK.

Abstract translation: 用于估计具有低偏差的信噪比（SNR）的装置和方法，其对于正SNR和小到负SNR均有效。 该估计基于可以从其计算SNR的幅度的最大似然估计的迭代解。 该估计适用于各种调制系统，包括BPSK，QPSK和MPSK。

公开(公告)号：US20070183335A1

公开(公告)日：2007-08-09

申请号：US11732904

申请日：2007-04-04

Applicant: Philip Pietraski ,  Gregory Sternberg ,  Rui Yang ,  Bin Li

Inventor： Philip Pietraski ,  Gregory Sternberg ,  Rui Yang ,  Bin Li

IPC: H04L12/26

CPC classification number: H04L1/0026 ,  H04L1/20 ,  H04L25/0202

Abstract: A method and apparatus for estimating and reporting the quality of a wireless communication channel between a wireless transmit/receive unit (WTRU) and a Node-B. A modulated signal is received from the Node-B over the communication channel and a channel estimation is performed on the modulated signal to provide a channel estimate. In one embodiment, the modulated signal is demodulated based on the channel estimate to provide a demodulated signal and a signal-to-interference (SIR) estimate based on the demodulated signal is obtained. The quality of the communication channel is estimated based on at least the SIR estimate. In an alternate embodiment, a SIR estimate based on the channel estimate is obtained. The quality of the communication channel is estimated based on the SIR estimate and additional information including at least one of delay spread, transmit power and WTRU velocity information.

公开(公告)号：US20060251152A1

公开(公告)日：2006-11-09

申请号：US11153967

申请日：2005-06-16

Applicant: Bin Li ,  Rui Yang ,  Gregory Sternberg

Inventor： Bin Li ,  Rui Yang ,  Gregory Sternberg

IPC: H04L27/06

CPC classification number: H04L1/20 ,  H04B2201/70701

Abstract: The present invention is related to a method and apparatus for estimating signal-to-noise ratio (SNR) based on dedicated physical channel (DPCH) pilot symbols in a wireless communication system. A receiver receives a DPCH transmission and a despreader despreads the received DPCH transmission. A selector selects pilot symbols in the despread DPCH transmission. A signal power estimator estimates signal power based on the pilot symbols, and a noise power estimator estimates noise power based on the received DPCH transmission. A SNR estimator estimates an SNR based on the signal power estimation and the noise power estimation. The noise power estimator may calculate the noise power estimation either based only on pilot symbols or based on both pilot symbols and non-pilot symbols. The DPCH transmission may be transmitted using more than one antenna for transmit diversity.

Abstract translation: 本发明涉及一种用于在无线通信系统中基于专用物理信道（DPCH）导频符号来估计信噪比（SNR）的方法和装置。 接收机接收DPCH传输，并且去扩展器对所接收的DPCH传输进行解扩。 选择器在解扩DPCH传输中选择导频符号。 信号功率估计器基于导频符号估计信号功率，并且噪声功率估计器基于所接收的DPCH传输来估计噪声功率。 SNR估计器基于信号功率估计和噪声功率估计来估计SNR。 噪声功率估计器可以仅基于导频符号或基于导频符号和非导频符号来计算噪声功率估计。 可以使用多于一个的天线发射DPCH传输用于发射分集。

公开(公告)号：US20060171451A1

公开(公告)日：2006-08-03

申请号：US11265373

申请日：2005-11-02

Applicant: Philip Pietraski ,  Mihaela Beluri ,  Alpaslan Demir ,  Jung-Lin Pan ,  Gregory Sternberg ,  Rui Yang ,  Bin Li

Inventor： Philip Pietraski ,  Mihaela Beluri ,  Alpaslan Demir ,  Jung-Lin Pan ,  Gregory Sternberg ,  Rui Yang ,  Bin Li

IPC: H03K5/159

CPC classification number: H04L25/03038 ,  H04B1/7097 ,  H04L27/0014 ,  H04L2025/03509 ,  H04L2025/03547 ,  H04L2025/03585 ,  H04L2025/03611 ,  H04L2025/03617 ,  H04L2025/03687 ,  H04L2027/003 ,  H04L2027/0038 ,  H04L2027/0065

Abstract: An adaptive equalizer including an equalizer filter and a tap coefficients generator used to process a sample data stream derived from a plurality of received signals is disclosed. The tap coefficients generator includes an equalizer tap update unit, a vector norm square estimator, an active taps mask generator, a switch and a pilot amplitude reference unit used to minimize the dynamic range of the equalizer filter. A dynamic mask vector is used to mask active taps generated by the equalizer tap update unit when an unmasked signal output by the equalizer filter is selected by the switch to generate an error signal fed to the equalizer tap update unit. A fixed mask vector is used to mask active taps generated by the equalizer tap update unit when a masked signal output by the equalizer filter is used to generate the error signal.

公开(公告)号：US20060109892A1

公开(公告)日：2006-05-25

申请号：US11327738

申请日：2006-01-06

Applicant: Bin Li ,  Rui Yang ,  Alexander Reznik ,  Ariela Zeira

Inventor： Bin Li ,  Rui Yang ,  Alexander Reznik ,  Ariela Zeira

IPC: H04B1/707 ,  H04L1/02

CPC classification number: H04B1/7113 ,  H04B1/7115 ,  H04L25/03038 ,  H04L25/03987 ,  H04L2025/03592

Abstract: A receiver which suppresses inter-cluster multipath interference by processing an impulse channel response consisting of two multipath clusters, each cluster having groups of signals with multiple delays. In one embodiment, the receiver includes a single antenna and parallel-connected delay units used to align the groups of signals before being input into respective sliding window equalizers. The outputs of the equalizers are combined at chip level via a combiner which provides a single output. In another embodiment, a cluster multipath interference suppression (CMIS) circuit is incorporated into the receiver. The CMIS circuit includes a hard decision unit and a plurality of signal regeneration units to generate replicas of the multipath clusters. The replicas are subtracted from the respective outputs of the delay units and the results are input to the respective sliding window equalizers. In another embodiment, multiple antennas are used to receive and process the clusters.

公开(公告)号：US07031406B1

公开(公告)日：2006-04-18

申请号：US09370178

申请日：1999-08-09

Applicant: Bin Li ,  Wen Tong

Inventor： Bin Li ,  Wen Tong

IPC: H04L27/06

CPC classification number: H04L1/006 ,  H04L1/0054 ,  H04L25/03203 ,  H04L25/03324 ,  H04L25/03337

Abstract: A SOVA decoding method determines, for each information symbol time and each state of a decoding trellis, a vector of probabilities for each possible symbol value in accordance with transition path probabilities for reaching the state with respective information symbol values and probability vectors for the states at the previous information symbol time from which the state can be reached, and also determines a total probability for each state. A soft output is provided by summing probabilities for corresponding symbol values all states of the trellis at an information symbol time relating to the start of the vectors, corresponding to a desired survivor path length. The vectors can comprise probability ratios instead of probabilities to reduce storage especially for binary signal decoding, and logarithmic probabilities or ratios can be used to simplify computation.

Abstract translation: SOVA解码方法针对每个信息符号时间和每个状态的解码网格，根据用于达到状态的过渡路径概率，针对各个信息符号值和状态的概率向量，确定每个可能的符号值的概率向量 可以从其到达状态的先前信息符号时间，并且还确定每个状态的总概率。 通过对与对应于期望的幸存者路径长度的向量开始相关的信息符号时间的相应符号值的所有状态对所有状态求和的概率来提供软输出。 向量可以包括概率比而不是概率以减少存储，特别是对于二进制信号解码，并且可以使用对数概率或比率来简化计算。

公开(公告)号：US20060024695A1

公开(公告)日：2006-02-02

申请号：US11097463

申请日：2005-03-31

Applicant: Bin Li ,  Lei Xi ,  Yan Wang ,  Peter Vander Horn

Inventor： Bin Li ,  Lei Xi ,  Yan Wang ,  Peter Vander Horn

IPC: C12Q1/68 ,  C12P19/34

CPC classification number: C12Q1/6851 ,  C12Q2561/101 ,  C12Q2525/161 ,  C12Q2521/101 ,  C12Q2537/143 ,  C12Q2527/143

Abstract: This invention provides methods and kits for performing a quantitative amplification reaction. The method employs a polymerase enzyme and an enzyme having a 3′ to 5′ exonuclease activity that cleaves the 3′ oligonucleotide of the probe.

公开(公告)号：US20050159975A1

公开(公告)日：2005-07-21

申请号：US11038555

申请日：2005-01-18

Applicant: JianDong Wang ,  Bin Li

Inventor： JianDong Wang ,  Bin Li

IPC: G06Q10/00 ,  G06F17/60

CPC classification number: G06Q10/06 ,  G06Q10/08 ,  G06Q10/087 ,  G06Q10/10 ,  G06Q10/101 ,  G06Q20/102

Abstract: A multiple-party business cooperation system for exchanging business data includes a business-to-business application server (10), a database (11), a number of manufacturer sub-systems (12), a number of brand maker sub-systems (13), and a number of forwarder sub-systems (14). The business-to-business application server includes a receiving module (100) for receiving the business data, a translating module (101) for translating the business data into documents in a designated format, a transmitting module (102) for transmitting the documents to corresponding sub-systems, and a storing module (103) for storing the documents in the database. A related multiple-party business cooperation method is also provided.

Abstract translation: 用于交换业务数据的多方业务合作系统包括企业对企业应用服务器（10），数据库（11），多个制造商子系统（12），多个品牌制造者子系统 13）和多个转发子系统（14）。 业务对企业应用服务器包括用于接收业务数据的接收模块（100），用于将业务数据转换为指定格式的文档的翻译模块（101），用于将文档传送到 相应的子系统，以及用于将文档存储在数据库中的存储模块（103）。 还提供了相关的多方业务合作方式。