Patents by Inventor Juinn-Horng Deng
Juinn-Horng Deng has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20240120955Abstract: A signal processing device, used to suppress cross-talk nonlinear distortion of a RF front end circuit. The first circuit generates a first PD signal and a second PD signal according to a first input signal and a second input signal. The first PD signal and the second PD signal are provided to a first PA and a second PA of the RF front end circuit. The second circuit generates a first control signal and a second control signal according to a first output signal, a second output signal, a first DPD signal and a second DPD signal, so as to control the first circuit to generate the first PD signal and the second PD signal. The first PA generates the first output signal through a first filter having a first operating BW. The second PA generates the second output signal through a second filter having a second operating BW.Type: ApplicationFiled: November 23, 2022Publication date: April 11, 2024Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTEInventors: Juinn-Horng DENG, Yuan-Pei WANG, Chung-Lien HO
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Publication number: 20240113427Abstract: A calibration method and a calibration device for a large-size antenna array are provided. The calibration method includes: performing an intra-group calibration on each antenna group in a plurality of antenna groups; and powering on each of the antenna groups of the plurality of antenna groups to perform an inter-group calibration on a first antenna group in the plurality of antenna groups.Type: ApplicationFiled: November 10, 2022Publication date: April 4, 2024Applicant: Industrial Technology Research InstituteInventors: Juinn-Horng Deng, Siang-He Huang, Chung-Lien Ho
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Publication number: 20210013974Abstract: In aspect, the disclosure includes a method of configuring a MIMO wideband receiver. The method would include estimating, on a SISO basis, a set of post-processing parameters for a plurality of receiver channels; receiving, by each of the plurality of receiver channels, a first test signal which is transmitted from a first transmitter channel on a MIMO basis; calculating a first set of crosstalk parameters in response to receiving the first test signal; receiving, by each of the plurality of receiver channels, a second test signal which is transmitted from a second transmitter channel on the MIMO basis; calculating a second set of crosstalk parameters in response to receiving second test signal; and calculating the set of post-processing parameters based on the first set of crosstalk parameters and the second set of crosstalk parameters by cancelling a crosstalk interference among plurality of receiver channels.Type: ApplicationFiled: December 31, 2019Publication date: January 14, 2021Applicant: Industrial Technology Research InstituteInventors: Juinn-Horng Deng, Pin-Nien Chen
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Publication number: 20190215208Abstract: A time and frequency synchronization method that includes the steps outlined below is provided. A wireless signal from a base station is received. The wireless signal is delayed on a time domain and is further correlated with the original wireless signal to generate a delayed and correlated signal. Primary symbols related to a primary synchronization signal are delayed and are further correlated with the original primary symbols to generate delayed and correlated primary symbols. The delayed and correlated signal and the delayed and correlated primary symbols are correlated to identify the position of the primary synchronization signal based on a primary peak value. The position of the secondary synchronization signal is identified based on the position of the primary synchronization signal.Type: ApplicationFiled: January 14, 2018Publication date: July 11, 2019Inventors: Juinn-Horng DENG, Chia-Fang LEE, Tsung-Yu TSAI
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Patent number: 9537701Abstract: A joint estimation and compensation method of RF imperfections in a LIE (Long Term Evolution) uplink system comprises steps: establishing a joint signal model with RF imperfections; according to the joint signal model, undertaking estimation and compensation of CFO, DC offset, multipath channel, IQ imbalance and shaping filter imbalance of a received signal; and using a frequency equalizer to equalize said received signal and determine modulation data. For reducing computational complexity, the present invention further converts the received signal from a time domain to a frequency domain to undertake frequency domain compensation. The present invention can indeed solve the problems of IQ imbalance, filter imbalance, DC offset, multipath channel and CFO and effectively estimate and compensate RF imperfections in the LTE uplink system.Type: GrantFiled: December 17, 2015Date of Patent: January 3, 2017Assignee: Yuan Ze UniversityInventors: Juinn-Horng Deng, Hung-Yang Hsieh, Jeng-Kuang Hwang, Yi-Hsin Lin, Sheng-Yang Huang, Kuang-Min Lin
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Publication number: 20160285667Abstract: A joint estimation and compensation method of RF imperfections in a LIE (Long Term Evolution) uplink system comprises steps: establishing a joint signal model with RF imperfections; according to the joint signal model, undertaking estimation and compensation of CFO, DC offset, multipath channel, IQ imbalance and shaping filter imbalance of a received signal; and using a frequency equalizer to equalize said received signal and determine modulation data. For reducing computational complexity, the present invention further converts the received signal from a time domain to a frequency domain to undertake frequency domain compensation. The present invention can indeed solve the problems of IQ imbalance, filter imbalance, DC offset, multipath channel and CFO and effectively estimate and compensate RF imperfections in the LTE uplink system.Type: ApplicationFiled: December 17, 2015Publication date: September 29, 2016Inventors: JUINN-HORNG DENG, HUNG-YANG HSIEH, JENG-KUANG HWANG, YI-HSIN LIN, SHENG-YANG HUANG, KUANG-MIN LIN
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Patent number: 7634233Abstract: The present invention relates to a transmission system with interference avoidance capability, which includes a transmission apparatus and a receiving apparatus. The transmission method thereof receives first data by means of an interference-processing module of the transmission apparatus and adds a plurality of extension data to the first data to produce second data for replacing a plurality of data corresponding to an interfered band in the second data with zero data, and then producing transmission data. The transmission data is converted to a radio-frequency signal by a transmission-processing module and transmitted to the receiving apparatus. Thereby, signal interference can be prevented by avoiding spectrum overlap regions.Type: GrantFiled: November 27, 2006Date of Patent: December 15, 2009Assignee: Chung Shan Institute of Science and TechnologyInventors: Juinn-Horng Deng, Jeng-Kuang Hwang, Po-Tien Lee, Fu-Chin Shau
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Patent number: 7539265Abstract: A multiple-input multiple-output code division multiple access (MIMO-CDMA) wireless communication equipment has a transmitter and a receiver. The transmitter has an encoder for receiving and encoding a plurality of data, and sending the data to a quadrature phase-shift keying (QPSK) unit. The QPSK unit conducts QPSK modulating to an output of the encoder and sends it to a space-time block coding (STBC) unit or a space multiplexer to process space-time coding or space coding. A plurality of data frame generating modules generate a data frame respectively based on the output of the STBC unit, a plurality of preamble codes generated by a preamble code spreading unit, a pilot code and a cyclic prefix. The data frame is sent to the receiver via a plurality of transmitting antennas.Type: GrantFiled: November 9, 2005Date of Patent: May 26, 2009Assignee: Chung Shan Institute of Science and Technology, Armaments Bureau, M.N.D.Inventors: Juinn-Horng Deng, Jeng-Kuang Hwang, Po-Tien Lee, Fu-Chin Shau
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Publication number: 20090129444Abstract: The present invention relates to a multi-code multicarrier code division multiple access system in frequency-selective fading channels. According to the present invention, the transmitting device thereof uses the mapping/spectrum-spreading units to receive the plurality of substreams, map and spread the plurality of substreams, and produce a plurality of biorthogonal keying data items. The plurality of repetition units receives the plurality of biorthogonal keying data items, respectively, repeats the plurality of biorthogonal keying data items, and produces the plurality of repeated data item. The shifting units shift the plurality of repeated data items, respectively, and produce a plurality of shifted data items. The shifted data items are orthogonal to each other. Thereby, the peak-to-average-power-ratio (PAPR) is lowered.Type: ApplicationFiled: November 20, 2007Publication date: May 21, 2009Inventors: Juinn-Horng Deng, Jeng-Kuang Hwang, Yu-Lun Chiu, Rih-Lung Chung
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Publication number: 20090076789Abstract: A pre-verifying method for software/hardware design of a communication system includes simulating a process of sending a data frame from a transmitter to a receiver with a transceiver algorithm meeting a preset specification for obtaining simulation parameters. A transmitter hardware platform sends the data frame via an antenna. A receiver hardware platform receives an echo signal of the data frame and compares each parameter of the echo signal with the simulation parameters. The comparison result of various parameters of the echo signal and the simulation parameters is verified to be in a desired range or not. When the comparison result is not in the desired range, the transceiver algorithm is adjusted. When the comparison result is in the desired range, the transceiver algorithm is converted to a hardware program language format to be written in a programmable module to perform the action of the transmitter and the receiver.Type: ApplicationFiled: November 20, 2008Publication date: March 19, 2009Applicant: Chung Shan Institute of Science and Technology, Armaments Bureau, M.N.D.Inventors: Juinn-Horng Deng, Jeng-Kuang Hwang, Po-Tien Lee, Fu-Chin Shau
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Patent number: 7406067Abstract: The present invention discloses a MIMO system and method, which is suitable for MC-CDMA communication system with multiple paths to obtain the spectrum efficiency and gain simultaneously. The transceiver performs steps of simultaneously transferring transmitting data to a plurality of parallel data streams, and space time block encoding each data, followed by spreading the encoded data streams with a pre-designed space-path spreading code, and transmitting data with the transmit antennas through multiple paths. Finally, at each receiver, despreading received data by the matched filters, and separating mutually interfering signals with a linear combiner and a BLAST detector to obtain the diversity gain.Type: GrantFiled: April 22, 2004Date of Patent: July 29, 2008Assignee: National Chiao Tung UniversityInventors: Juinn-Horng Deng, Jwo-Yuh Wu, Ta-Sung Lee
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Patent number: 7385955Abstract: The present invention provides a communication system, signal pre-processing apparatus and signal receiving apparatus thereof. The signal pre-processing apparatus is used for pre-processing signals before they are transmitted by a plurality of antennas. The apparatus includes a serial-to-parallel converter, L compensation processors and L beam formation processors. First of all, the serial-to-parallel converter converts a digital signal into N divided signals. Each of the compensation processors pre-compensates the N divided signals and outputs a compensated signal. Each of the beam formation processors intensifies the compensated signal and outputs an intensified signal. Each of the antennas combines L intensified signals into a particular signal, and meanwhile, upconverts the particular signal into a RF (radio-frequency) signal for transmission.Type: GrantFiled: April 20, 2004Date of Patent: June 10, 2008Assignee: Qisda CorporationInventors: Juinn-Horng Deng, Ta-Sung Lee, Fu-Yen Kuo
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Publication number: 20080125046Abstract: The present invention relates to a transmission system with interference avoidance capability, which includes a transmission apparatus and a receiving apparatus. The transmission method thereof receives first data by means of an interference-processing module of the transmission apparatus and adds a plurality of extension data to the first data to produce second data for replacing a plurality of data corresponding to an interfered band in the second data with zero data, and then producing transmission data. The transmission data is converted to a radio-frequency signal by a transmission-processing module and transmitted to the receiving apparatus. Thereby, signal interference can be prevented by avoiding spectrum overlap regions.Type: ApplicationFiled: November 27, 2006Publication date: May 29, 2008Inventors: Juinn-Horng Deng, Jeng-Kuang Hwang, Po-Tien Lee, Fu-Chin Shau
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Publication number: 20080118009Abstract: The present invention relates to a pseudo-random number demodulation circuit of receiving device of wireless communication system. More particularly, it can demodulate the symbol data transmitted from a transmitting device for a wireless communication system. The transmitting device modulates multiple pilot subcarriers and multiple data subcarriers of the symbol data according to a first PN. The present invention uses a first demodulator demodulates all pilot subcarriers and data subcarriers of the symbol data according to a second PN. Further, a splitter splits the symbol data to the pilot subcarriers and the data subcarriers. More, a second demodulator is used to demodulate the data subcarriers according to a third PN. Therefore, the present invention can demodulate the pilot subcarriers and the data subcarriers which have not been modulated.Type: ApplicationFiled: November 20, 2006Publication date: May 22, 2008Inventors: Yu-Min Chuang, Fu-Min Yeh, Juinn-Horng Deng
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Publication number: 20080120530Abstract: The present invention relates to a transceiver puncture circuit of wireless communication system, which is amounted with a control circuit and a clipper module, the puncture module couples to a coding unit of the transceiver. The control circuit bases on a fixed clock signal, results in an enable signal to the coding unit and also results in a selecting signal to the clipper circuit; the coding unit codes an input data as a coding data and transfers the coding data to the clipper module, the coding data comprises a plurality of bit data; the clipper module selects the partial bit data of the bit data according to the selecting signal, and then results in a output data according to the fixed clock signal. Therefore, it achieves that the control circuit synchronously controls a clipper module and a coding unit of the transceiver for improving the deal effect of the transceiver.Type: ApplicationFiled: November 22, 2006Publication date: May 22, 2008Inventors: Yu-Min Chuang, Fu-Min Yeh, Juinn-Horng Deng
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Publication number: 20080117953Abstract: The present invention is related to a frequency offset estimation circuit of receiving device of wireless transmission system, which includes a delay unit, a multiplier, an angle estimator, a compensation unit, and an arithmetic logic unit. The delay unit receives a preamble symbol of a baseband and delays the preamble symbol, the preamble symbol adjusts by a launcher of the wireless transmission system, and the launcher adjusts the preamble symbol in accordance with a cover sequence. The multiplier multiplies the preamble symbol and after delayed the preamble symbol by the delay unit for producing a first data. The angle estimator estimates the first data for an estimative value of phase shift. The compensation unit determines the estimative value of phase shift to compensate the estimative value of phase shift. The arithmetic logic unit produces a frequency deviation in accordance with after compensated the estimative value of phase shift by the compensation unit.Type: ApplicationFiled: November 20, 2006Publication date: May 22, 2008Inventors: Yu-Min Chuang, Fu-Min Yeh, Juinn-Horng Deng
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Publication number: 20080117954Abstract: The present invention relates to a frequency-hopping analysis circuit of a receiving apparatus in a wireless transmission system, which includes an RF receiving circuit, a detection circuit, and a matching module. The RF receiving circuit receives an RF signal according to an initial frequency-hopping sequence to produce a baseband signal. The detection circuit detects the signal strength of the baseband signal, and identifies the corresponding piconet group of the baseband signal according to the estimated strength. Then, the matching module matches a preamble of the baseband signal according to a plurality of piconets of the corresponding piconet group of the baseband signal, and gives the corresponding piconet of the baseband signal. Thereby, the corresponding frequency-hopping sequence of the baseband signal is given and is transmitted to the RF receiving circuit for replacing the initial frequency-hopping sequence.Type: ApplicationFiled: November 20, 2006Publication date: May 22, 2008Inventors: Yu-Min Chuang, Fu-Min Yeh, Juinn-Horng Deng, You-Jung Shin, Gwo-Yang Wu
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Publication number: 20080118016Abstract: A synchronous circuit of a receiving device of a wireless transmission system composed of a delaying unit, a multiplier, a matched filter and a checking unit is disclosed. The delaying unit receives a preamble of a baseband signal and delays the preamble that includes a plurality of symbols. Through the multiplier, the symbols of the preamble are multiplied by the symbols of the preamble delayed by the delaying unit so as to generate a plurality of matched data. Then the matched filter matches and filters the matched data to generate a plurality of output data according to a plurality of matched parameters. At last, the checking unit checks these output data to obtain the maximum output data and the corresponding symbol so as to generate a synchronous signal. Therefore, the receiving device demodulates the baseband signal and obtains the data correctly.Type: ApplicationFiled: November 20, 2006Publication date: May 22, 2008Inventors: Yu-Min Chuang, Fu-Min Yeh, Juinn-Horng Deng
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Patent number: 7327776Abstract: A time domain spreading method and apparatus for a UWB receiver are provided. Wherein, a series of received symbol signals are received by the UWB receiver, and transformed by the fast Fourier transform to obtain a series of transformed signals Y(m) according to one of the received symbol signals. Y(m)=Y1(m)+jYQ(m), and m is a positive integer more than zero. The real part and imaginary part of the transferred signals are exchanged and the exchanged signals are inversely outputted to obtain a plurality of despreading received data signals X(m), and X(m)=YQ(?m)+jY1(?m).Type: GrantFiled: December 20, 2004Date of Patent: February 5, 2008Assignee: Chung Shan Institute of Science and Technology, Armaments Bureau, M.N.D.Inventors: Juinn-Horng Deng, Kuang-Shyr Wu, Yu-Min Chuang
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Patent number: 7236539Abstract: A method and apparatus for estimation of frequency offset in wireless communications. Symbols to be transmitted are arranged in blocks of K symbols. The symbol blocks and their replicas are interleaved and then encoded into K sequences of coded symbols in space and time domains. The K coded symbol sequences are transmitted from K transmit antennas, while baseband signals carrying the coded symbols are received via J receive antennas and converted into J groups of intermediate signals. Thereafter, an interlaced operation and coherent combination is performed on each of the J intermediate signal groups. J sets of computed signals are thus generated and then combined in the space and time domains to develop a set of combined signals. Consequently, a frequency offset is estimated on the basis of this combined signal set.Type: GrantFiled: December 17, 2002Date of Patent: June 26, 2007Assignee: Mediatek Inc.Inventors: Juinn-Horng Deng, Ta-Sung Lee