Patents by Inventor Inyup Kang

Inyup Kang 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).

  • Publication number: 20130287135
    Abstract: A method of operation of a communication system includes: calculating a total received power estimation based on a designated received signal having a designated pilot symbol; calculating an instantaneous channel estimation based on the designated pilot symbol calculating a channel gain power estimation based on the instantaneous channel estimation; calculating a total interference power estimation based on a difference between the instantaneous channel estimation and a delayed channel estimation; calculating a designated received power based on a difference between the total received power estimation and the total interference power estimation; and determining a relative transmission power estimation based on the designated received power and the channel gain power estimation for communicating with a device.
    Type: Application
    Filed: April 30, 2012
    Publication date: October 31, 2013
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Hongbing Cheng, Soobok Yeo, Kwangman Ok, Inyup Kang
  • Publication number: 20130283134
    Abstract: A communication system includes: a decoding-probability module for calculating a decoding likelihood with a control unit for characterizing an alternative hypothesis regarding an arriving communication; a null-probability module, coupled to the decoding-probability module, for calculating a null likelihood for characterizing a null hypothesis regarding the arriving communication; a weight-calculation module, coupled to the decoding-probability module, for generating a decision weight corresponding to the decoding likelihood, the null likelihood, or a combination thereof; a reliability calculation module, coupled to the decoding-probability module, for calculating a decoding reliability with the decision weight, the decoding likelihood, and the null likelihood, the decoding reliability corresponding to a decoded-result; and a decoding module, coupled to the reliability calculation module, for decoding the arriving communication with a decoding parameter based on the decoding reliability for communicating with
    Type: Application
    Filed: April 9, 2013
    Publication date: October 24, 2013
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Dongwoon Bai, Jungwon Lee, Sungsoo Kim, Hanju Kim, Inyup Kang
  • Publication number: 20130235957
    Abstract: A communication system includes: a module configured to decode a remainder portion of a receiver message using a mechanism with a compensation channel value calculated from decoding an evaluation portion of the receiver message with a different mechanism, or using a mechanism-controller generated using a mismatch characterization based on determining a partial-sensitive output and a partial-insensitive output, or a combination thereof for communicating with a device.
    Type: Application
    Filed: March 7, 2013
    Publication date: September 12, 2013
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Mostafa El Khamy, Jinhong Wu, Heejin Roh, Jungwon Lee, Inyup Kang
  • Publication number: 20130196670
    Abstract: A method of operation of a mobile communication system includes: receiving a base carrier frequency signal from a cell tower location; generating a power spectral density from the base carrier frequency signal; measuring a Rician K factor from the power spectral density; estimating a line-of-sight Doppler frequency based on the base carrier frequency signal; determining the cell tower location based on the Rician K factor; and activating a handover decision handler based on the cell tower location.
    Type: Application
    Filed: January 27, 2012
    Publication date: August 1, 2013
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Sungsoo Kim, Inyup Kang, Jungwon Lee
  • Publication number: 20130155967
    Abstract: A method of operation of a wireless communication system includes: transmitting from a serving eNodeB for conveying a desired input signal to a first user electronics; transmitting from a neighbor eNodeB for conveying the desired input signal to a second user electronics and broadcasting an interference input signal toward the first user electronics; activating a request additional parametric information module in the serving eNodeB for responding to the first user electronics; and transferring additional parametric information from the serving eNodeB for negating the interference input signal in the first user electronics.
    Type: Application
    Filed: July 30, 2012
    Publication date: June 20, 2013
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Inyup Kang, Hyukjoon Kwon, Jungwon Lee, Junghyun Bae
  • Publication number: 20130156139
    Abstract: A method of operation of a wireless communication system includes: receiving a desired input signal and an interference input signal; activating a first symbol detector for generating a desired log-likelihood ratio from the desired input signal; activating a second symbol detector for generating an interference log-likelihood ratio from the interference input signal; and jointly decoding a decoded bit by iteratively refining the interference log-likelihood ratio for negating the interference input signal and iteratively refining the desired log-likelihood ratio for enhancing the desired input signal.
    Type: Application
    Filed: July 27, 2012
    Publication date: June 20, 2013
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jungwon Lee, Hyukjoon Kwon, Inyup Kang
  • Publication number: 20130150053
    Abstract: A method of operation of a communication system includes: estimating a channel; calculating a predicted signal within the channel; evaluating a prediction accuracy of the predicted signal; and adjusting a handoff parameter when the prediction accuracy of the predicted signal is within a threshold range for communicating through a mobile station.
    Type: Application
    Filed: December 8, 2011
    Publication date: June 13, 2013
    Inventors: Insoo Hwang, Jungwon Lee, Heejin Roh, Inyup Kang
  • Publication number: 20130065581
    Abstract: A method of operation of a mobile telecommunication system includes: measuring a received reference power; removing a guard portion from the received reference power; determining a noise variance estimate from both a noise region of the received reference power and a noise sample in a signal region of the received reference power, or calculating a dispersion power of a noise region of the received reference power and determining the noise variance estimate based on at least a dispersion power; and calculating a signal to noise ratio from the noise variance estimate for adjusting a receiver device.
    Type: Application
    Filed: August 21, 2012
    Publication date: March 14, 2013
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Insoo Hwang, Heejin Roh, Jungwon Lee, Inyup Kang
  • Publication number: 20130058427
    Abstract: A method of operation of a communication system includes: calculating a shift distance of a received signal having a distortion; calculating an approximate likelihood of the received signal matching a transmitted signal from the shift distance; determining a bias factor from the distortion; and selecting a determined modulation maximizing a combination of the approximate likelihood and the bias factor for communicating with a device.
    Type: Application
    Filed: March 30, 2012
    Publication date: March 7, 2013
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Dongwoon Bai, Jungwon Lee, Sungsoo Kim, Junghyun Bae, Jooyeol Yang, Inyup Kang
  • Publication number: 20120238272
    Abstract: A method of operation of a mobile telecommunication system includes: measuring a measured target power and a measured server power; predicting a future target power and a future server power for a prediction tap number from when the measured target power and the measured server power are measured; computing an estimation error and a prediction error associated with the future target power and the future server power; determining a handoff hysteresis level based on the estimation error and the prediction error; and sending a handoff trigger for transferring a mobile station from a server station to a target station when the future target power minus both the future server power and the handoff hysteresis level is greater than zero.
    Type: Application
    Filed: December 13, 2011
    Publication date: September 20, 2012
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Insoo Hwang, Jungwon Lee, Heejin Roh, Inyup Kang
  • Publication number: 20120209900
    Abstract: A method of operation of a communication system includes: generating a filter impulse response and a filter time-domain data with a shortening filter; generating a filter frequency response based on the filter impulse response with a filter frequency response calculator; generating a filter frequency-domain data based on the filter time-domain data with a first process unit; and generating a raw channel impulse response with a filter frequency removal unit for removing the filter frequency response from the filter frequency-domain data.
    Type: Application
    Filed: June 17, 2011
    Publication date: August 16, 2012
    Inventors: Vladislav Sorokine, Jungwon Lee, Sungsoo Kim, Inyup Kang
  • Publication number: 20120134229
    Abstract: An N-dimension addressable memory is disclosed. The memory includes an N-dimension array of bit ceils and logic configured to address each bit cell using N-Dimension Addressing (NDA), where N is at least two and the array of bit cells is addressable by N orthogonal address spaces. Each bit cell of the N-dimension addressable memory includes a bit storage element, N word lines, and N bit lines.
    Type: Application
    Filed: February 8, 2012
    Publication date: May 31, 2012
    Inventors: Chihtung Chen, Inyup Kang, Viraphol Chaiyakul
  • Publication number: 20120051407
    Abstract: Disclosed are methods and apparatus for sampling rate conversion in a wireless transceiver. The methods and apparatus achieve agile setting of sampling rates or resampling by adaptively setting a sampling rate of a signal based on at least one performance requirement of the transceiver. In particular, the methods and apparatus perform sampling of an input signal at a first sampling rate to gain one or more input signal samples. The input signal samples are then filtered using parallel or polyphase filtering operating at a second sampling rate lower than the first sampling rate. The filtered samples are then interpolated at the second sampling rate to achieve resampling of the input signal. Polyphase filtering affords an effectively high input sampling rate for good spectrum image rejection, while allowing the second sampling rate to be effectively much lower than the first rate, thereby reducing the complexity of multiplier operations for interpolation.
    Type: Application
    Filed: February 24, 2011
    Publication date: March 1, 2012
    Applicant: QUALCOMM INCORPORATED
    Inventors: Zhu Ji, Brian Clarke Banister, Inyup Kang
  • Patent number: 8120989
    Abstract: An N-dimension addressable memory. The memory includes an N-dimension array of bit cells and logic configured to address each bit cell using N-Dimension Addressing (NDA), where N is at least two and the array of bit cells is addressable by N orthogonal address spaces. Each bit cell of the N-dimension addressable memory includes a bit storage element, N word lines, and N bit lines.
    Type: Grant
    Filed: June 25, 2007
    Date of Patent: February 21, 2012
    Assignee: QUALCOMM Incorporated
    Inventors: Chihtung Chen, Inyup Kang, Viraphol Chaiyakul
  • Publication number: 20120033767
    Abstract: A method for quantizing decision metrics (e.g., log likelihood ratios (LLRs)) for reduction of memory requirements in wireless communication is described. The method includes selecting a quantization algorithm. The quantization algorithm may be selected as a function of a characteristic of a decision metric representative of a transport block received over a communication channel, a characteristic of the transport block, or a condition of the communication channel. The method further includes quantizing the decision metric using the selected quantization algorithm to generate at least one quantized decision metric representative of the transport block. The method further includes storing the quantized decision metric and an indicia of the selected quantization algorithm to enable recovery of the decision metric representative of the transport block prior to decoding.
    Type: Application
    Filed: July 12, 2011
    Publication date: February 9, 2012
    Applicant: QUALCOMM Incorporated
    Inventors: Thomas B. Wilborn, Brian C. Banister, Sungho Yun, Supratik Bhattacharjee, Inyup Kang
  • Patent number: 8099072
    Abstract: In accordance with one aspect of the disclosure, apparatus are provided. A filter is provided to receive from an antenna a receive signal of a given type and a low noise amplifier is provided to amplify the received signal. A translator down translates the receive signal carried at a radio frequency to be carried at an intermediate frequency. An I/Q channel separator is provided to separate the receive signal carried at the intermediate frequency into an analog in-phase (I) signal in an I channel and an analog quadrature-phase (Q) in a Q channel. An analog-to-digital (A/D) converter is provided to respectively convert the I signal and the Q signal to digital domain representations of the I signal and the Q signal. An intermodulation (IM) distortion avoider is provided to avoid IM distortion in the receive signal. The IM distortion avoider includes a carrier frequency exchanger to exchange an IM carrier frequency of IM distortion contained in the receive signal with a carrier frequency of the receive signal.
    Type: Grant
    Filed: November 21, 2006
    Date of Patent: January 17, 2012
    Assignee: QUALCOMM Incorporated
    Inventors: Daniel F. Filipovic, Inyup Kang
  • Patent number: 8064556
    Abstract: This disclosure describes equalization techniques for spread spectrum wireless communication. The techniques may involve estimating a channel impulse response, estimating channel variance, and selecting filter coefficients for an equalizer based on the estimated channel impulse response and the estimated channel variance. Moreover, in accordance with this disclosure, the channel variance estimation involves estimation of two or more co-variances for different received samples. Importantly, the equalizer is “fractionally spaced,” which means that the equalizer defines fractional filtering coefficients (filter taps), unlike conventional equalizers that presume that filter coefficients are defined at integer chip spacing. The techniques can allow the equalizer to account for antenna diversity, such as receive diversity, transmit diversity, or possibly both.
    Type: Grant
    Filed: August 9, 2006
    Date of Patent: November 22, 2011
    Assignee: Qualcomm Incorporated
    Inventors: Parvathanathan Subrahmanya, Inyup Kang, Jia Fei, Rajesh Sundaresan
  • Publication number: 20110206151
    Abstract: Providing for reduced complexity or improved accuracy in de-mapping received wireless data streams for multi-channel wireless communication is described herein. By way of example, a low-complexity likelihood algorithm can be employed to de-map data bits from the wireless data streams. In one particular example, the likelihood algorithm can approximate a received bit with a subset of received wireless symbols correlated the bit, reducing algorithm complexity. In other examples, a limited set of received wireless symbols can be employed for the subset, further reducing algorithm complexity. According to at least one other example, logarithmic terms of the algorithm can be approximated with non-logarithmic functions, such as a look-up table, series expansion, polynomial approximation, or the like. These approximations can enhance symbol de-mapping accuracy while maintaining or improving processing overhead for a wireless receiver.
    Type: Application
    Filed: February 23, 2010
    Publication date: August 25, 2011
    Applicant: QUALCOMM Incorporated
    Inventors: Michael L. McCloud, Matthias Brehler, Ju Won Park, Jong Hyeon Park, Je Woo Kim, Inyup Kang, Brian C. Banister
  • Patent number: 7991041
    Abstract: Techniques for recovering a desired transmission in the presence of interfering transmissions are described. For iterative detection and cancellation, multiple groups of code channels are formed for a plurality of code channels for at least one sector. Processing is performed for the multiple groups of code channels in multiple iterations. For each iteration, data detection and signal cancellation are performed for the multiple groups of code channels in multiple stages, e.g., in a sequential order starting with the strongest group to the weakest group. Each stage of each iteration may perform data detection, signal reconstruction, and signal cancellation. Each stage of each iteration may also perform equalization, data detection, signal reconstruction, and signal cancellation.
    Type: Grant
    Filed: November 15, 2006
    Date of Patent: August 2, 2011
    Assignee: QUALCOMM, Incorporated
    Inventors: Byonghyo Shim, Farrokh Abrishamkar, Inyup Kang
  • Patent number: 7954016
    Abstract: Embodiments disclosed herein address the need in the art for an efficient multi-symbol deinterleaver. In one aspect, a plurality of memory banks are deployed to receive and simultaneously store a plurality of values, such as soft decision values determined from a modulation constellation, in accordance with a storing pattern. In another aspect, the storing pattern comprises a plurality of cycles, a selected subset of the plurality of memory banks and an address offset for use in determining the address for storing into the respective memory banks indicated for each cycle. In yet another aspect, the stored values may be accessed in order with a sequentially increasing index, such as an address. Various other aspects are also presented. These aspects have the benefit of allowing multiple symbol values to be deinterleaved in an efficient manner, thus meeting computation time constraints, and conserving power.
    Type: Grant
    Filed: March 4, 2010
    Date of Patent: May 31, 2011
    Assignee: Qualcomm Incorporated
    Inventors: Hanfang Pan, Inyup Kang, James Krysl