Patents by Inventor Jae-Sung Jang
Jae-Sung Jang 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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Patent number: 7200796Abstract: A QCTC (Quasi-Complementary Turbo Code) generating apparatus having a turbo encoder for generating an information symbol sequence and a plurality of parity symbol sequences by encoding the information symbol sequence; a channel interleaver for individually interleaving the symbol sequences, generating new parity symbol sequences by multiplexing the symbols of parity symbol sequences with the same priority levels, and serially concatenating the information symbol sequence and the new parity symbol sequences; and a QCTC generator for generating a sub-code with a given code rate by recursively selecting a predetermined number of symbols from the concatenated symbol sequence at a given starting position.Type: GrantFiled: October 7, 2003Date of Patent: April 3, 2007Assignee: Samsung Electronics Co., Ltd.Inventors: Min-Goo Kim, Jae-Sung Jang
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Patent number: 7146557Abstract: Disclosed is an apparatus and method for transmitting R-RICH (Reverse Rate Indicator Channel) in a CDMA (Code Division Multiple Access) mobile communication system. There is provided an encoding/decoding apparatus and method for generating optimal codewords for optimal (24,1) encoding to optimal (24,7) encoding, and supporting all of an optimal (24,1) encoder to an optimal (24,7) encoder.Type: GrantFiled: May 9, 2002Date of Patent: December 5, 2006Assignee: Samsung Electronics Co., Ltd.Inventors: Youn-Sun Kim, Jae-Sung Jang, Ho-Kyu Choi, Jae-Yoel Kim, Hwan-Joon Kwon
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Patent number: 7093186Abstract: An apparatus and method for generating an initial puncturing matrix from which a first sub-code is produced in a communication system. The apparatus includes a turbo encoder for generating information symbols and first and second parity symbols for an information bit stream and a sub-code generator for generating sub-codes from the information symbols and the first and second parity symbols using puncturing matrices. The method includes the steps of selecting a number of information symbols equal to a number of columns in the initial puncturing matrix from the information symbols output from the turbo encoder, if a difference between the number Ns of selected symbols in the initial puncturing matrix and the number of the columns in the initial puncturing matrix is equal to or greater than a number of component encoders in the turbo encoder, and selecting a number of first and second parity symbols equal to the difference.Type: GrantFiled: August 9, 2004Date of Patent: August 15, 2006Assignee: Samsung Electronics Co., Ltd.Inventors: Min-Koo Kim, Jae-Sung Jang
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Patent number: 7093185Abstract: A QCTC (Quasi-Complementary Turbo Code) generating apparatus having: a turbo encoder for generating an information symbol sequence and a plurality of parity symbol sequences by encoding the information symbol sequence; a channel interleaver for individually interleaving the symbol sequences, generating new parity symbol sequences by multiplexing the symbols of parity symbol sequences with the same priority levels, and serially concatenating the information symbol sequence and the new parity symbol sequences; and a QCTC generator for generating a sub-code with a given code rate by recursively selecting a predetermined number of symbols from the concatenated symbol sequence at a given starting position.Type: GrantFiled: February 12, 2002Date of Patent: August 15, 2006Assignee: Samsung Electronics Co., Ltd.Inventors: Min-Goo Kim, Jae-Sung Jang
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Patent number: 7065060Abstract: A communication method in a mobile communication system in which an access terminal transmits to an access network DRC information indicating a selected one of forward data rates requested by the access terminal is provided. The access network designates a DRC information length DRC Length indicating a number of slots where the DRC information is repeated and transmits the designated DRC information length to the access terminal. The access terminal gates transmission of DRC information to the access terminal at one time slot in every DRC information length received from the access network.Type: GrantFiled: June 21, 2001Date of Patent: June 20, 2006Assignee: Samsung Electronics Co., Ltd.Inventors: Yu-Suk Yun, Soon-Young Yoon, Hee-Won Kang, Jae-Heung Yeom, Sang-Hyun Yang, Hoon Huh, Youn-Sun Kim, Ho-Kyu Choi, Jae-Sung Jang
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Patent number: 7010322Abstract: A method for controlling power of common power control channels from a plurality of base stations in order to control transmission power of a mobile station in a mobile communication system. The power control method comprises receiving, by the mobile station, pilot signals from the base stations and selecting a base station that transmitted a pilot signal having a highest power level; transmitting information indicating a channel condition between the selected base station and the mobile station, from the mobile station to the selected base station; and controlling power of a common power control channel transmitted from the selected base station to the mobile based on the channel condition information received from the selected base station.Type: GrantFiled: October 28, 2002Date of Patent: March 7, 2006Assignee: Samsung Electronics Co., Ltd.Inventors: Youn-Sun Kim, Jae-Sung Jang, Ho-Kyu Choi, Hwan-Joon Kwon
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Publication number: 20050210365Abstract: There is provided an apparatus and method of generating two-dimensional QCTCs. The sub-code sets of QCTCs with given code rates are generated and the sub-codes are rearranged in a sub-code set with a different code rate, for use in the next transmission to a sub-code with a predetermined code rate.Type: ApplicationFiled: April 8, 2005Publication date: September 22, 2005Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Min-Goo Kim, Sang-Hyuck Ha, Jae-Sung Jang
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Patent number: 6877130Abstract: Provided is an apparatus and method for generating an initial puncturing matrix from which a first sub-code is produced in a communication system. The apparatus includes a turbo encoder for generating information symbols and first and second parity symbols for the input of an information bit stream and a sub-code generator for generating sub-codes from the information symbols and the first and second parity symbols using puncturing matrices. The method comprises the steps of selecting as many information symbols as a number of columns in the initial puncturing matrix from the information symbols output from the turbo encoder, if a difference between the number Ns of selected symbols in the initial puncturing matrix and the number of the columns in the initial puncturing matrix is equal to or greater than a number of component encoders in the turbo encoder, and selecting as many first and second parity symbols as the difference.Type: GrantFiled: October 17, 2001Date of Patent: April 5, 2005Assignee: Samsung Electronics Co. Ltd.Inventors: Min-Koo Kim, Jae-Sung Jang
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Publication number: 20050010852Abstract: An apparatus and method for generating an initial puncturing matrix from which a first sub-code is produced in a communication system is provided. The apparatus includes a turbo encoder for generating information symbols and first and second parity symbols for the input of an information bit stream and a sub-code generator for generating sub-codes from the information symbols and the first and second parity symbols using puncturing matrices. The method comprises the steps of selecting as many information symbols as a number of columns in the initial puncturing matrix from the information symbols output from the turbo encoder, if a difference between the number Ns of selected symbols in the initial puncturing matrix and the number of the columns in the initial puncturing matrix is equal to or greater than a number of component encoders in the turbo encoder and selecting as many first and second parity symbols as the difference.Type: ApplicationFiled: August 9, 2004Publication date: January 13, 2005Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Min-Koo Kim, Jae-Sung Jang
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Publication number: 20040268204Abstract: An apparatus and method for generating an initial puncturing matrix from which a first sub-code is produced in a communication system is provided. The apparatus includes a turbo encoder for generating information symbols and first and second parity symbols for the input of an information bit stream and a sub-code generator for generating sub-codes from the information symbols and the first and second parity symbols using puncturing matrices. The method comprises the steps of selecting as many information symbols as a number of columns in the initial puncturing matrix from the information symbols output from the turbo encoder, if a difference between the number Ns of selected symbols in the initial puncturing matrix and the number of the columns in the initial puncturing matrix is equal to or greater than a number of component encoders in the turbo encoder and selecting as many first and second parity symbols as the difference.Type: ApplicationFiled: July 27, 2004Publication date: December 30, 2004Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Min-Koo Kim, Jae-Sung Jang
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Publication number: 20040068687Abstract: A QCTC (Quasi-Complementary Turbo Code) generating apparatus having a turbo encoder for generating an information symbol sequence and a plurality of parity symbol sequences by encoding the information symbol sequence; a channel interleaver for individually interleaving the symbol sequences, generating new parity symbol sequences by multiplexing the symbols of parity symbol sequences with the same priority levels, and serially concatenating the information symbol sequence and the new parity symbol sequences; and a QCTC generator for generating a sub-code with a given code rate by recursively selecting a predetermined number of symbols from the concatenated symbol sequence at a given starting position.Type: ApplicationFiled: October 7, 2003Publication date: April 8, 2004Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Min-Goo Kim, Jae-Sung Jang
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Publication number: 20030083092Abstract: A method for controlling power of common power control channels from a plurality of base stations in order to control transmission power of a mobile station in a mobile communication system. The power control method comprises receiving, by the mobile station, pilot signals from the base stations and selecting a base station that transmitted a pilot signal having a highest power level; transmitting information indicating a channel condition between the selected base station and the mobile station, from the mobile station to the selected base station; and controlling power of a common power control channel transmitted from the selected base station to the mobile based on the channel condition information received from the selected base station.Type: ApplicationFiled: October 28, 2002Publication date: May 1, 2003Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Youn-Sun Kim, Jae-Sung Jang, Ho-Kyu Choi, Hwan-Joon Kwon
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Publication number: 20030054847Abstract: An apparatus and method for transmitting and receiving forward channel quality information between a base station and a mobile station in a CDMA mobile communication system supporting multimedia service including voice and data services. The mobile station transmits an absolute value symbol in at least one time slot selected from a plurality of time slots, and a relative value symbol in one of the remaining time slots. The absolute value symbol represents the signal strength of the forward channel in the at least one time slot corresponding to the selected time slot, and the relative value symbol represents a change in the signal strength of the forward channel between the at least one time slot corresponding to the one remaining time slot and the signal strength of the forward channel in a previous time slot.Type: ApplicationFiled: August 29, 2002Publication date: March 20, 2003Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Youn-Sun Kim, Jae-Sung Jang, Ho-Kyu Choi, Hwan-Joon Kwon, Dong-Hee Kim
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Publication number: 20030045321Abstract: A power control method during a soft handoff in a mobile communication system. A mobile station communicating with a plurality of base stations at a soft handoff measures the signal strengths of forward common pilot channels received from the base stations and transmit them to the base stations sequentially. Then the base stations control the transmission power of forward common power control channels according to the received signal strength measurements.Type: ApplicationFiled: August 26, 2002Publication date: March 6, 2003Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Youn-Sun Kim, Jae-Sung Jang, Ho-Kyu Choi, Hwan-Joon Kwon
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Publication number: 20030043888Abstract: Disclosed is an apparatus and method for transmitting R-RICH (Reverse Rate Indicator Channel) in a CDMA (Code Division Multiple Access) mobile communication system. There is provided an encoding/decoding apparatus and method for generating optimal codewords for optimal (24,1) encoding to optimal (24,7) encoding, and supporting all of an optimal (24,1) encoder to an optimal (24,7) encoder.Type: ApplicationFiled: May 9, 2002Publication date: March 6, 2003Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Youn-Sun Kim, Jae-Sung Jang, Ho-Kyu Choi, Jae-Yoel Kim, Hwan-Joon Kwon
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Publication number: 20030031230Abstract: A base station transmission apparatus for transmitting MAC (Medium Access Control) ID (Identification) information indicating a terminal to receive transmission packet data and length information of the transmission packet data in a mobile communication system for high-speed packet transmission, having an encoder for encoding a bit stream indicating the MAC ID information and generating coded symbols; a Walsh cover section for Walsh-covering the coded symbols from the encoder with a Walsh code based on the length information; and a Walsh spreader for spreading the Walsh-covered symbols from the Walsh cover section with a predetermined Walsh code.Type: ApplicationFiled: March 11, 2002Publication date: February 13, 2003Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Hwan-Joon Kwon, Ho-Kyu Choi, Young-Kwon Cho, Woo-Sang Hong, Chang-Hun Bae, Youn-Sun Kim, Jae-Sung Jang
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Publication number: 20030026224Abstract: An encoding method in a mobile communication system, for receiving 4 input information bits, encoding the 4 input information bits with different Walsh codes of length 16, and outputting a coded symbol stream having 24 coded symbols using a coded symbol stream having 16 coded symbols obtained by XORing the encoded input information bits by an XOR operator. The encoding method comprises repeating the coded symbol stream having 16 coded symbols once, and thus outputting a coded symbol stream having 32 coded symbols; and puncturing 0th, 1st, 2nd, 3rd, 4th, 5th, 6th and 16th symbols from the 32 coded symbols, and thus outputting the coded symbol stream having 24 coded symbols.Type: ApplicationFiled: March 19, 2002Publication date: February 6, 2003Applicant: SAMSUNG ELECTRONICS CO. LTD.Inventors: Jae-Yoel Kim, Ho-Kyu Choi, Jae-Sung Jang, Youn-Sun Kim
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Publication number: 20020152445Abstract: There is provided an apparatus and method of generating two-dimensional QCTCs. The sub-code sets of QCTCs with given code rates are generated and the sub-codes are rearranged in a sub-code set with a different code rate, for use in the next transmission to a sub-code with a predetermined code rate.Type: ApplicationFiled: February 6, 2002Publication date: October 17, 2002Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Min-Goo Kim, Sang-Hyuck Ha, Jae-Sung Jang
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Publication number: 20020144205Abstract: An apparatus and method for generating an initial puncturing matrix from which a first sub-code is produced in a communication system is provided. The apparatus includes a turbo encoder for generating information symbols and first and second parity symbols for the input of an information bit stream and a sub-code generator for generating sub-codes from the information symbols and the first and second parity symbols using puncturing matrices. The method comprises the steps of selecting as many information symbols as a number of columns in the initial puncturing matrix from the information symbols output from the turbo encoder, if a difference between the number Ns of selected symbols in the initial puncturing matrix and the number of the columns in the initial puncturing matrix is equal to or greater than a number of component encoders in the turbo encoder and selecting as many first and second parity symbols as the difference.Type: ApplicationFiled: October 17, 2001Publication date: October 3, 2002Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Min-Koo Kim, Jae-Sung Jang
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Publication number: 20020129314Abstract: A QCTC (Quasi-Complementary Turbo Code) generating apparatus having: a turbo encoder for generating an information symbol sequence and a plurality of parity symbol sequences by encoding the information symbol sequence; a channel interleaver for individually interleaving the symbol sequences, generating new parity symbol sequences by multiplexing the symbols of parity symbol sequences with the same priority levels, and serially concatenating the information symbol sequence and the new parity symbol sequences; and a QCTC generator for generating a sub-code with a given code rate by recursively selecting a predetermined number of symbols from the concatenated symbol sequence at a given starting position.Type: ApplicationFiled: February 12, 2002Publication date: September 12, 2002Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Min-Goo Kim, Jae-Sung Jang