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公开(公告)号：NO20045573L
公开(公告)日：2005-02-21
申请号：NO20045573
申请日：2004-12-21
Applicant: INTERDIGITAL TECH CORP
Inventor： ZEIRA ARIELA , KIM YOUNGLOK
IPC: G06F17/16 , H04B1/7097 , H04B1/707 , H04L1/00
Abstract: Data is to be detected in a wireless communication system. A plurality of communication signals are received. A solution for estimating data of the received communication signals is modeled using a linear system requiring a matrix inversion. Columns or rows of an approximate Cholesky factor are determined. A difference between the determined columns or rows is determined. If the determined difference is less than a threshold, subsequent columns or rows are determined by previously determined columns or rows. The data of the received communication signals is estimated using the approximate Cholesky factor.
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公开(公告)号：HK1064535A1
公开(公告)日：2005-01-28
申请号：HK04106943
申请日：2004-09-13
Applicant: INTERDIGITAL TECH CORP
Inventor： KIM YOUNGLOK , ZEIRA ARIELA
Abstract: A base station, comprising a first channelization device to receive data and spread the data with a first channelization code to produce a first spread data field; a second channelization device to receive the same data as the first channelization device and spread the received data with a second channelization code that is different from the first channelization code to produce a second spread data field; a first training sequence device in communication with the first channelization device, the first training sequence device to combine the first spread data field with a first midamble to produce a first communication burst, the first midamble for estimating a channel impulse response; a second training sequence device in communication with the second channelization device, the second training sequence device to combine the second spread data field with a second midamble to produce a second communication burst, the second midamble for estimating a channel impulse response; a first scrambling device to scramble the first spread data field by a scrambling code associated with the base station; a second scrambling device to scramble the second spread data field by the scrambling code associated with the base station; a first diversity antenna to transmit the first communication burst; and a second diversity antenna to transmit the second communication burst.
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公开(公告)号：AT281723T
公开(公告)日：2004-11-15
申请号：AT01996123
申请日：2001-12-05
Applicant: INTERDIGITAL TECH CORP
Inventor： KIM YOUNGLOK , ZEIRA ARIELA
Abstract: A base station, comprising a first channelization device to receive data and spread the data with a first channelization code to produce a first spread data field; a second channelization device to receive the same data as the first channelization device and spread the received data with a second channelization code that is different from the first channelization code to produce a second spread data field; a first training sequence device in communication with the first channelization device, the first training sequence device to combine the first spread data field with a first midamble to produce a first communication burst, the first midamble for estimating a channel impulse response; a second training sequence device in communication with the second channelization device, the second training sequence device to combine the second spread data field with a second midamble to produce a second communication burst, the second midamble for estimating a channel impulse response; a first scrambling device to scramble the first spread data field by a scrambling code associated with the base station; a second scrambling device to scramble the second spread data field by the scrambling code associated with the base station; a first diversity antenna to transmit the first communication burst; and a second diversity antenna to transmit the second communication burst.
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公开(公告)号：AU2003248665A1
公开(公告)日：2003-12-31
申请号：AU2003248665
申请日：2003-06-11
Applicant: INTERDIGITAL TECH CORP
Inventor： REZNIK ALEXANDER , KIM YOUNGLOK , PAN JUNG-LIN , ZEIRA ARIELA
IPC: H04B1/7103 , H04B1/707 , H04B7/155
Abstract: A method for the simultaneous reception of data from multiple sources having different spreading factors. A plurality of transmission response matrices are generated and grouped together for equal spreading factors. A plurality of spreading factor group matrices are assembled. A base matrix is formed based upon the spreading factor group matrix having a lowest spreading factor. An additional spreading factor group matrix is selected for consideration. Column placement reference index for the base matrix is derived. A reference location for the base matrix is derived. A column set from the selected spreading factor group matrix is derived. The column set is inserted into the base matrix. A total transmission response matrix is assembled.
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公开(公告)号：NO20032644A
公开(公告)日：2003-07-29
申请号：NO20032644
申请日：2003-06-11
Applicant: INTERDIGITAL TECH CORP
Inventor： KIM YOUNGLOK , ZEIRA ARIELA
CPC classification number: H04L25/0202 , H04B1/707 , H04B7/0669 , H04L1/0041 , H04L1/0618 , H04L1/0643
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Patent Agency Ranking
公开(公告)号：NO20032644D0
公开(公告)日：2003-06-11
申请号：NO20032644
申请日：2003-06-11
Applicant: INTERDIGITAL TECH CORP
Inventor： KIM YOUNGLOK , ZEIRA ARIELA
Abstract: The present invention is a system and method for transmitting data symbols in a CDMA communication system including a transmitter having an antenna array and a receiver. The system generates a first and second data field of symbols, then encodes them to produce complex conjugates of the respective symbols. A first communication burst including the first and second data fields, which are separated by a midamble, over a first antenna, and a second communication burst produced using said complex conjugates of said first and second data fields, which are separated by a midamble, over a second antenna are then transmitted by the transmitter. The receiver then receives and decodes the first and second communication bursts to recover the first and second data fields.
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公开(公告)号：NO20032435L
公开(公告)日：2003-05-28
申请号：NO20032435
申请日：2003-05-28
Applicant: INTERDIGITAL TECH CORP
Inventor： KIM YOUNGLOK , ZEIRA ARIELA
Abstract: A base station, comprising a first channelization device to receive data and spread the data with a first channelization code to produce a first spread data field; a second channelization device to receive the same data as the first channelization device and spread the received data with a second channelization code that is different from the first channelization code to produce a second spread data field; a first training sequence device in communication with the first channelization device, the first training sequence device to combine the first spread data field with a first midamble to produce a first communication burst, the first midamble for estimating a channel impulse response; a second training sequence device in communication with the second channelization device, the second training sequence device to combine the second spread data field with a second midamble to produce a second communication burst, the second midamble for estimating a channel impulse response; a first scrambling device to scramble the first spread data field by a scrambling code associated with the base station; a second scrambling device to scramble the second spread data field by the scrambling code associated with the base station; a first diversity antenna to transmit the first communication burst; and a second diversity antenna to transmit the second communication burst.
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公开(公告)号：NO20032435A
公开(公告)日：2003-05-28
申请号：NO20032435
申请日：2003-05-28
Applicant: INTERDIGITAL TECH CORP
Inventor： KIM YOUNGLOK , ZEIRA ARIELA
CPC classification number: H04B1/707 , H04B7/0697 , H04L1/0618 , H04L1/0631 , H04L25/0202 , H04L25/03866
Abstract: The present invention provides a base station comprising a first antenna (15) for transmitting a first communication burst and a second antenna (16) for transmitting a second communication burst, first means (8) for spreading provided data by using a first channelization code producing first spread data and second means (9) for spreading the same provided data by using a second channelization code producing second spread data, the first channelization code being different than the second channelization code, the base station characterized by comprising: third means (12) for inserting a first training sequence into the first spread data producing a first communication burst; and fourth means (13) for inserting a second training sequence into the second spread data producing a second communication burst.
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公开(公告)号：CA2460579A1
公开(公告)日：2003-03-27
申请号：CA2460579
申请日：2002-09-16
Applicant: INTERDIGITAL TECH CORP
Inventor： KIM YOUNGLOK , PAN JUNG-LIN
Abstract: A code indexing method for orthogonal variable spreading factor codes (OVSF) introduces a single number mapped to each code. The new code number itself n ot only provides the code signature, but it is also used for the OVSF code generation. In addition, it provides easy and fast generation of the availab le code list without the help of look-up table. This capability improves the dynamic code assignment.
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公开(公告)号：AU2022302A
公开(公告)日：2002-06-24
申请号：AU2022302
申请日：2001-12-05
Applicant: INTERDIGITAL TECH CORP
Inventor： KIM YOUNGLOK , ZEIRA ARIELA
Abstract: The present invention is a system and method for transmitting data symbols in a CDMA communication system including a transmitter having an antenna array and a receiver. The system generates a first and second data field of symbols, then encodes them to produce complex conjugates of the respective symbols. A first communication burst including the first and second data fields, which are separated by a midamble, over a first antenna, and a second communication burst produced using said complex conjugates of said first and second data fields, which are separated by a midamble, over a second antenna are then transmitted by the transmitter. The receiver then receives and decodes the first and second communication bursts to recover the first and second data fields.
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