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Xiangguo Tang

from Pleasanton, CA
Age ~47
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Also known as:
Xiang Guo Tang, Tang Cai Xiangguo, Xian G Wang, Xiang Wang
Related to:
Yu WangXin Wang, 54Lillian Wang, 51Fuyin Wang, 53Xiang Wang, 43Li Wang
Connected to:
Alan Tang, 50Albert M Tang, 81Alexandria T Tang, 52Alexis R Tang, 29An Tang, 65Andes Y Tang, 63Ang Y Tang, 65Angie M Tang, 57Anh Q Tang, 57Antonia T Tang, 37

Xiangguo Tang Phones & Addresses

  • Pleasanton, CA
  • 39149 Guardino Dr, Fremont, CA 94538 (510) 742-6564
  • 510 Mansion Ct APT 306, Santa Clara, CA 95054
  • 4919 Colusa St, Union City, CA 94587 (510) 477-6890
  • Walnut Creek, CA
  • Davis, CA
  • Iowa City, IA
  • Alameda, CA

Work

Company: Xincomm communications Nov 2009 to Mar 2018 Position: Co-founder and chief executive officer

Education

Degree: Bachelors, Bachelor of Science School / High School: Shanghai Jiao Tong University

Languages

Mandarin

Resumes

Resumes

Xiangguo Tang Photo 1

Xiangguo Tang

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Location:
3585 Yellowstone Ct, Pleasanton, CA 94588
Work:
Xincomm Communications Nov 2009 - Mar 2018
Co-Founder and Chief Executive Officer
Education:
Shanghai Jiao Tong University
Bachelors, Bachelor of Science University of California, Davis
Doctorates, Doctor of Philosophy
Languages:
Mandarin

Business Records

Name / Title
Company / Classification
Phones & Addresses
Xiangguo Tang
President
XINCOMM INTERNATIONAL CORP
1625 The Alameda STE 202, San Jose, CA 95126

Publications

Us Patents

Isdn Crosstalk Cancellation In A Dsl System

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US Patent:
7577084, Aug 18, 2009
Filed:
Apr 30, 2004
Appl. No.:
10/836954
Inventors:
Xiangguo Tang - Union City CA, US
Guozhu Long - Fremont CA, US
Amir H. Fazlollahi - Pleasanton CA, US
Assignee:
Ikanos Communications Inc. - Fremont CA
International Classification:
H04J 1/12
US Classification:
370201, 379417
Abstract:
To reduce the ISDN crosstalk in an incoming DSL signal, a crosstalk canceller observes at least a portion of the crosstalk signal and reproduces an estimate of the crosstalk signal for at least a portion of that signal within the DSL band. The crosstalk canceller applies a canceling signal based on the estimated crosstalk signal to reduce the crosstalk in the received DSL signal.

Method And Apparatus For Processing Received Signals For Synchronization In Communication Devices

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US Patent:
8363765, Jan 29, 2013
Filed:
Sep 17, 2007
Appl. No.:
11/856684
Inventors:
Jun Shen - Palo Alto CA, US
XiangGuo Tang - Union City CA, US
Assignee:
Sun Management, LLC - Cupertino CA
International Classification:
H04L 7/00
US Classification:
375354
Abstract:
Techniques to generate synchronization information from received signals in communication applications are disclosed. According to one embodiment, a method for generating synchronization information from received signals includes providing a fixed gain to a received analog signal to generate a modified analog signal, converting the modified analog signal to a digital signal, extracting one or more sign bits from the digital signal, and generating synchronization information as a function of the one or more sign bits. Various embodiments can be applied in several wireless and wired communication applications.

Antenna Selection Scheme For Multiple Antennae

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US Patent:
8417205, Apr 9, 2013
Filed:
Sep 17, 2007
Appl. No.:
11/856685
Inventors:
XiangGuo Tang - Union City CA, US
Jun Shen - Palo Alto CA, US
Assignee:
Sun Management, LLC - Cupertino CA
International Classification:
H04B 7/00
US Classification:
455272, 4552771, 4554221, 4554561
Abstract:
Techniques to select an antenna from a plurality of antennae used for wireless communications are described. A first embodiment of the techniques is a method to select an antenna from a plurality of antennae. The method includes monitoring at least one antenna during a fraction of at least one preamble period of a frame to derive at least one quality indicator corresponding to the antenna; storing the quality indicator derived from monitoring the antenna during the fraction of the preamble period of a frame; and selectively switching to a selected antenna after a number of frames, based on the quality indicator. A second embodiment is another method to select an antenna from a plurality of antennae. These embodiments can be applied in several wireless communication applications using multiple antennae.

High Speed, Low-Cost Process For The Demodulation And Detection In Edge Wireless Cellular Systems

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US Patent:
20050018794, Jan 27, 2005
Filed:
Jul 22, 2003
Appl. No.:
10/624024
Inventors:
Xiangguo Tang - Fremont CA, US
Zhi Ding - Davis CA, US
Ge Li - Fremont CA, US
International Classification:
H04L027/06
US Classification:
375341000, 375350000
Abstract:
A process for signal detection in EDGE cellular systems is presented with the step of wireless channel estimation, a time-reversed signal processor, a soft-output Viterbi signal detector consisting of forward and reverse block processing, a MAP decoder that exchange soft information with the equalizer. Claim 1. A signal detection mechanism to demodulate received data frame that includes an accurate estimator to obtain channel responses, a forward filter and a FIR decision feedback filter to be used in soft-output equalizer, a time-reversal device storing received data in a time-reversed order for reverse block processing, an interference removal apparatus in both forward and reverse processing blocks, and a soft-input soft-output reduced state equalizer that utilizes the forward processing and reversed time processing blocks to generate iterative soft-output signals to the forward error correction decoder within the receiver system.

Fdr Single Ended Line Testing (Selt) System And Method For Dsl Modems

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US Patent:
20060251160, Nov 9, 2006
Filed:
Jan 25, 2006
Appl. No.:
11/339865
Inventors:
Amir Fazlollahi - San Jose CA, US
Xiangguo Tang - Union City CA, US
International Classification:
H04B 1/38
US Classification:
375222000
Abstract:
A single ended line testing (SELT) method using a Frequency-Domain Reflectometry (FDR) that uses one or more echo signals originated by transmitting a periodic multi-tone sign, e.g., a REVERB signal, reflected from the hybrid and analyzes it in frequency domain. The REVERB signal is part of the ADSL modem training signal. Therefore the invention can be simply implemented as part of the DMT-based DSL modem because transmitting a multi-tone signal and capturing the frequency response of echo are readily available through the inverse fast Fourier transform/fast Fourier transform (IFFT/FFT) blocks that are used for modulation and demodulation.

Detection Performance In Communication Systems

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US Patent:
20090074101, Mar 19, 2009
Filed:
Sep 17, 2007
Appl. No.:
11/856645
Inventors:
XiangGuo Tang - Union City CA, US
Jun Shen - Palo Alto CA, US
Assignee:
APACEWAVE TECHNOLOGIES CORPORATION - Fremont CA
International Classification:
H03C 5/00
US Classification:
375268
Abstract:
A method and system to generate decoded information from received symbols in communication receivers. A first embodiment is a method to detect digitally modulated symbols and generate decoded information. The method includes receiving digitally modulated symbols, demapping the digitally modulated symbols to generate soft decisions representing digitally modulated symbols, multiplying the soft decisions by an adaptive factor to generate scaled soft decisions; and decoding the scaled soft decisions to generate decoded information. A second embodiment is a system having modules to detect digitally modulated symbols and generate decoded information. These embodiments can be applied in several wired and wireless communication applications including, but not limited to, WiMAX applications.

Dual-Mode Analog/Digital Adaptive Echo Cancellation In Communication Systems With Asymmetric Spectrum

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US Patent:
7009945, Mar 7, 2006
Filed:
Apr 30, 2004
Appl. No.:
10/836542
Inventors:
Xiangguo Tang - Union City CA, US
Amir H. Fazlollahi - Pleasanton CA, US
Guozhu Long - Fremont CA, US
Assignee:
Centillium Communications, Inc. - Fremont CA
International Classification:
H04B 3/20
H04M 9/08
US Classification:
370286, 37940601
Abstract:
An echo cancellation (EC) system for use in a full-duplex communication system having asymmetric signal sampling rates, in particular an ADSL system, is described. The system performs the cancellation of local echo signal in digital or analog domain depending on the loop condition using a switching logic. The EC system further includes an EC unit that generates a digital echo estimate signal at the lower sampling rate of the transmitted signal and then interpolates the digital signal to higher sampling rate to cancel echo signal thereby reducing computation complexity. The digital interpolated echo estimate signal is converted to analog form for use in analog echo cancellation. The subtracted signal resulting from the analog echo cancellation is converted into digital domain and used as feedback for the EC unit to adaptively improve the accuracy of the echo estimate.
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Xiangguo Tang from Pleasanton, CA, age ~47 Get Report