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公开(公告)号：BRPI0811982A2
公开(公告)日：2014-11-18
申请号：BRPI0811982
申请日：2008-05-27
Applicant: QUALCOMM INC
Inventor： RICHARDSON THOMAS , JIN HUI , LAROIA RAJIV , LI JUNYI
Abstract: Methods and apparatus for improving the utilization of air link resources in a wireless communications system, e.g., an OFDM MIMO system, including a base station with multiple transmit antennas are described. Superposition signaling in the downlink is employed. The superimposed signal includes a first transform result signal and a second lower power signal. The first transform result signal is generated from a first signal, which uses position modulation, e.g., including null components and high power non-null components. Different components of the first transform result signal are directed to different transmit antennas. The first transform result signal communicates information to a first wireless terminal, e.g., a weak receiver. The non-null received elements of the first transform result signal are utilized by a second wireless terminal, e.g., a superior receiver, as pilots to determine a channel estimate. The second wireless terminal uses the determined channel estimate to demodulate received second signals.
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公开(公告)号：AT548839T
公开(公告)日：2012-03-15
申请号：AT09000843
申请日：2006-07-08
Applicant: QUALCOMM INC
Inventor： LAROIA RAJIV , JIN HUI , LI JUNYI
Abstract: Special DC tone treatment in a wireless communications system, e.g., an OFDM system, is discussed. In the downlink, a wireless terminal receiver introduces self-interference at the DC tone from the RP/ baseband conversion. A base station thus does not transmit on the downlink DC tone according to a predetermined pattern while continuing to transmit on other downlink tones.. Wireless terminals measure received signal on the downlink DC tone during the time of suspended DC tone transmission, estimate self-interference and apply a correction to other received downlink DC tones. In the uplink DC tone interference is a composite of the assigned wireless terminal transmitter's baseband/RF conversion self-interference and air link noise. During one symbol interval of an N symbol interval dwell, the uplink DC tone is reserved for a special modulation symbol, which is a predetermined function of the other N-1 modulation symbols. At the base station, its receiver receives a set of modulation symbols conveyed by the uplink DC tone for a dwell, calculates the average DC component and corrects the received N-1 modulation symbols.
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公开(公告)号：ES2368947T3
公开(公告)日：2011-11-23
申请号：ES06848990
申请日：2006-12-20
Applicant: QUALCOMM INC
Inventor： RICHARDSON TOM , JIN HUI , LI JUNYI , PARIZHSKY VLADIMIR
Abstract: Un procedimiento (7600) para hacer funcionar un terminal inalámbrico, que comprende: determinar (7606) símbolos de modulación que van a transmitirse en un segmento de canal de control según un primer procedimiento de mapeo de bits de información a símbolos de modulación cuando en un primer modo de funcionamiento de canal de control; y determinar (7608) símbolos de modulación que van a transmitirse en un segmento de canal de control según un segundo procedimiento de mapeo de bits de información a símbolos de modulación cuando en un segundo modo de funcionamiento de canal de control; donde dichos símbolos de modulación son símbolos de modulación transmitidos en tonos individuales.
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公开(公告)号：UA96108C2
公开(公告)日：2011-09-26
申请号：UAA201015970
申请日：2005-07-20
Applicant: QUALCOMM INC
Inventor： RICHARDSON TOM , JIN HUI , NOVICHKOV VLADIMIR
Abstract: Описангибкийи относительноаппаратноэффективный LDPC-декодер. Декодерможетбытьреализованс уровнемпараллелизма, которыйменьшеполногопараллелизмаструктурыкода, используемойдляуправленияпроцессомдекодирования. Каждаякомандаотносительнопростогоуправляющегокода, используемогодляописанияструктурыкода, можетбытьсохраненаи исполненанесколькораздлявыполнениядекодированиякодовогослова. Различныезначениядлиныкодовогословаподдерживаютсяс помощьюодногонабораинструкцийкодауправления, ноприэтомкодреализуетсяразличноечислоразв зависимости
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公开(公告)号：UA94695C2
公开(公告)日：2011-06-10
申请号：UAA200701778
申请日：2005-07-20
Applicant: QUALCOMM INC
Inventor： RICHARDSON TOM , JIN HUI , NOVICHKOV VLADIMIR
IPC: H03M13/00
Abstract: Описангибкийи относительноаппаратноэффективный LDPC -декодер. Декодерможетбытьреализованс уровнемпараллелизма, которыйменьшеполногопараллелизмаструктурыкода, которыйиспользуетсядляуправленияпроцессомдекодирования. Каждаякомандаотносительнопростогоуправляющегокода, которыйиспользуетсядляописанияструктурыкода, можетбытьсохраненаи выполненанесколькораздлявыполнениядекодированиякодовогослова. Разныезначениядлиныкодовогословаподдерживаютсяс помощьюодногонабораинструкцийкодауправления, ноприэтомкодреализовываетсяразноеколичеств
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Patent Agency Ranking
公开(公告)号：UA91513C2
公开(公告)日：2010-08-10
申请号：UAA200701776
申请日：2005-07-20
Applicant: QUALCOMM INC
Inventor： RICHARDSON TOM , JIN HUI
IPC: H03M13/00
Abstract: Описангибкийи относительноаппаратноэффективный LDPC-кодер. Кодерможетбытьреализованс уровнемпараллелизма, которыйменьшеполногопараллелизмаструктурыкода, которыйиспользуетсядлятого, чтобыуправлятьпроцессомкодировки. Каждаякомандаотносительнопростогомикрокода, которыйиспользуетсядлятого, чтобыописыватьструктурукода, можетбытьсохраненаи выполненанесколькораз, чтобывыполнитькодировкукодовогослова. Разныезначениядлиныкодовогословамогутподдерживатьсяс помощьюодногонабораинструкциймикрокода, ноприэтомкодреализо
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公开(公告)号：AU2010200778A1
公开(公告)日：2010-03-25
申请号：AU2010200778
申请日：2010-03-02
Applicant: QUALCOMM INC
Inventor： RICHARDSON TOM , NOVICHKOV VLADIMIR , JIN HUI
Abstract: A flexible and relatively hardware efficient LDPC decoder is described. The decoder can be implemented with a level of parallelism which is less than the full parallelism of the code structure used to control the decoding process. Each command of a relatively simple control code used to describe the code structure can be stored and executed multiple times to complete the decoding of a codeword. Different codeword lengths are supported using the same set of control code instructions but with the code being implemented a different number of times depending on the codeword length. The decoder can switch between decoding codewords of different lengths, without the need to change the stored code description information, by simply changing a code lifting factor that is indicative of codeword length and is used to control the decoding process.; When decoding codewords shorter than the maximum supported codeword length some block storage locations may go unused.
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公开(公告)号：CA2672073A1
公开(公告)日：2006-02-09
申请号：CA2672073
申请日：2005-07-20
Applicant: QUALCOMM INC
Inventor： RICHARDSON TOM , JIN HUI
IPC: H03M13/13
Abstract: A flexible and relatively hardware efficient LDPC encoder is described (300) . The encoder cm be implemented with a level of parallelism which is less than the full parallelism of the code structure used to control the encoding process (301) . Each command of a relatively simple microcode used to describe the code structure can be stored and executed multiple times to complete the encoding of a codeword (354). Different codeword lengths can be supported using the same set of microcode instructions but with the code being implemented a different number of times depending on the lifting factor selected to be used (310). The LDPC encoder can switch between encoding codewords of different lengths, without the need to change the stor ed code description information, by simply changing a code lifting factor used to control the encoding processes (310). When coding codewords shorter than the maximum supported codeword length some block storage locations and/or registers may go unused (308).
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公开(公告)号：HK1150475A1
公开(公告)日：2011-12-30
申请号：HK11104472
申请日：2011-05-05
Applicant: QUALCOMM INC
Inventor： RICHARDSON TOM , JIN HUI , NOVICHKOV VLADIMIR
IPC: H03M20060101
Abstract: A flexible and relatively hardware efficient LDPC decoder is described. The decoder can be implemented with a level of parallelism which is less than the full parallelism of the code structure used to control the decoding process. Each command of a relatively simple control code used to describe the code structure can be stored and executed multiple times to complete the decoding of a codeword. Different codeword lengths are supported using the same set of control code instructions but with the code being implemented a different number of times depending on the codeword length. The decoder can switch between decoding codewords of different lengths, without the need to change the stored code description information, by simply changing a code lifting factor that is indicative of codeword length and is used to control the decoding process.; When decoding codewords shorter than the maximum supported codeword length some block storage locations may go unused.
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10.发明专利
公开(公告)号：AU2008260226B2
公开(公告)日：2011-04-28
申请号：AU2008260226
申请日：2008-05-27
Applicant: QUALCOMM INC
Inventor： JIN HUI , LAROIA RAJIV , RICHARDSON THOMAS , LI JUNYI
Abstract: Methods and apparatus for improving the utilization of air link resources in a wireless communications system, e.g., an OFDM MIMO system, including a base station with multiple transmit antennas are described. Superposition signaling in the downlink is employed. The superimposed signal includes a first transform result signal and a second lower power signal. The first transform result signal is generated from a first signal, which uses position modulation, e.g., including null components and high power non-null components. Different components of the first transform result signal are directed to different transmit antennas. The first transform result signal communicates information to a first wireless terminal, e.g., a weak receiver. The non-null received elements of the first transform result signal are utilized by a second wireless terminal, e.g., a superior receiver, as pilots to determine a channel estimate. The second wireless terminal uses the determined channel estimate to demodulate received second signals.
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