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公开(公告)号：AU2004307128C1
公开(公告)日：2008-10-09
申请号：AU2004307128
申请日：2004-10-22
Applicant: QUALCOMM INC
Inventor： LING FUYUN , MANTRAVADI ASHOK , MURALI RAMASWAMY , WALKER KENT G , VIJAYAN RAJIV , SUBRAMANIAM ANAND D
Abstract: A method of broadcasting data in a wireless broadcast network, comprising multiplexing data for a wide-area transmission onto a first transmission span, the wide-area transmission being sent from a plurality of transmitters in the network; multiplexing data for a local transmission onto a second transmission span, wherein the multiplexing is onto frequency subbands pseudo-randomly selected from among all usable frequency subbands and the local transmission being sent from a subset of the plurality of transmitters; selecting the first and second transmission spans based on an amount of data to broadcast for the wide-area transmission and an amount of data to broadcast for the local transmission; and broadcasting the local and wide-area transmissions via a wireless link, wherein the data for the wide-area transmission and the data for the local transmission are time division multiplexed (TDM) at each base station, and wherein the first and second transmission spans are first and second time segments, respectively, of a frame of a predetermined time duration as well as a corresponding system.
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公开(公告)号：AU2004306689B2
公开(公告)日：2007-03-29
申请号：AU2004306689
申请日：2004-08-17
Applicant: QUALCOMM INC
Inventor： SUBRAMANIAM ANAND D , KADOUS TAMER
Abstract: Techniques are provided to support successive interference cancellation (SIC) receiver processing with selection diversity whereby each of NT transmit antennas may be turned on or off. One symbol stream may be transmitted from each transmit antenna. A SIC receiver recovers the transmitted symbol streams in a specific order. Up to N T ! orderings are evaluated. For each ordering, N T post-detection SNRs are obtained for N T transmit antennas and used to determine N T data rates, where the data rate is zero if the post-detection SNR is worse than a minimum required SNR. An overall data rate is computed for each ordering based on the N T data rates. The ordering with the highest overall data rate is selected for use. Up to N T symbol streams arc processed at the data rates for the selected ordering and transmitted. The transmitted symbol streams are recovered in accordance with the selected ordering.
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公开(公告)号：AR047022A1
公开(公告)日：2006-01-04
申请号：ARP040103405
申请日：2004-09-22
Applicant: QUALCOMM INC
Inventor： KADOUS TAMER , SUBRAMANIAM ANAND D
IPC: H04J99/00 , H04B7/06 , H04B7/08 , H04L1/00 , H04L1/06 , H04B1/00 , H04B15/00 , H04B17/00 , H04Q7/20
Abstract: Técnicas para soportar el procesamiento de los receptores de SIC (Succesive Interference Cancellation, cancelacion sucesiva de las interferencias) con diversidad de seleccion, pudiendo cada una de las NT antenas de transmision ser encendida o apagada. Una corriente de símbolos puede ser transmitida desde cada antena de transmision. Un receptor SIC recupera las corrientes de símbolos transmitidas en un orden específico. Se evaluan hasta NT! Ordenamientos. Para cada uno de los ordenamientos, se obtienen NT SNRs de post-deteccion para NT antenas de transmision y se los utiliza para determinar NT velocidades de los datos, siendo la velocidad de los datos igual a cero si el SNR de post-deteccion es peor que el SNR mínimo requerido. Se calcula una velocidad global de los datos para cada ordenamiento en base a las NT velocidades de datos. El ordenamiento con la mayor velocidad global de los datos es seleccionado para ser utilizado. Se procesan hasta NT corrientes de símbolos con las velocidades de los datos para el ordenamiento seleccionado y transmitido. Las corrientes de símbolos transmitidas son recuperadas de acuerdo con el ordenamiento seleccionado.
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公开(公告)号：CA2543415A1
公开(公告)日：2005-05-12
申请号：CA2543415
申请日：2004-10-22
Applicant: QUALCOMM INC
Inventor： WALKER KENT G , MANTRAVADI ASHOK , MURALI RAMASWAMY , LING FUYUN , SUBRAMANIAM ANAND D , VIJAYAN RAJIV
Abstract: A method of broadcasting data in a wireless broadcast network, comprising multiplexing data for a wide-area transmission onto a first transmission span, the wide-area transmission being sent from a plurality of transmitters in the network; multiplexing data for a local transmission onto a second transmission span, wherein the multiplexing is onto frequency subbands pseudo-randomly selected from among all usable frequency subbands and the local transmission being sent from a subset of the plurality of transmitters; selecting the first and second transmission spans based on an amount of data to broadcast for the wide-area transmission and an amount of data to broadcast for the local transmission; and broadcasting the local and wide-area transmissions via a wireless link, wherein the data for the wide-area transmission and the data for the local transmission are time division multiplexed (TDM) at each base station, and wherein the first and second transmission spans are first and second time segments, respectively, of a frame of a predetermined time duration as well as a corresponding system.
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公开(公告)号：CA2539966C
公开(公告)日：2010-09-14
申请号：CA2539966
申请日：2004-08-17
Applicant: QUALCOMM INC
Inventor： KADOUS TAMER , SUBRAMANIAM ANAND D
Abstract: Techniques are provided to support successive interference cancellation (SIC) receiver processing with selection diversity whereby each of NT transmit antennas may be turned on or off. One symbol stream may be transmitted from each transmit antenna. A SIC receiver recovers the transmitted symbol streams in a specific order. Up to NT! orderings are evaluated. For each ordering, NT post-detection SNRs are obtained for NT transmit antennas and used to determine NT data rates, where the data rate is zero if the post-detection SNR is worse than a minimum required SNR. An overall data rate is computed for each ordering based on the NT data rates. The ordering with the highest overall data rate is selected for use. Up to NT symbol streams are processed at the data rates for the selected ordering and transmitted. The transmitted symbol streams are recovered in accordance with the selected ordering.
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Patent Agency Ranking
公开(公告)号：SG133597A1
公开(公告)日：2007-07-30
申请号：SG2007044340
申请日：2005-01-28
Applicant: QUALCOMM INC
Inventor： MANTRAVADI ASHOK , SUBRAMANIAM ANAND D , GORE DHANANJAY ASHOK
IPC: H04B7/216 , H04H1/00 , H04H20/28 , H04H20/33 , H04H20/42 , H04H20/72 , H04J11/00 , H04L5/02 , H04L5/06 , H04L27/26
Abstract: Accordingly, a method and apparatus are provided to convert received content into a first stream and a second stream, to transmit said first stream using a first tone and to transmit said second stream using an orthogonal scheme. A layering scheme is used to transmit the base stream covering a smaller area and an enhanced stream is used to cover a large utilizing orthogonal scheme.
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公开(公告)号：CA2554764A1
公开(公告)日：2005-08-11
申请号：CA2554764
申请日：2005-01-28
Applicant: QUALCOMM INC
Inventor： GORE DHANANJAY ASHOK , SUBRAMANIAM ANAND D , MANTRAVADI ASHOK
IPC: H04L27/26 , H04B7/216 , H04H1/00 , H04H20/28 , H04H20/33 , H04H20/42 , H04H20/72 , H04J11/00 , H04L5/02 , H04L5/06
Abstract: Accordingly, a method and apparatus are provided to convert received content into a first stream and a second stream, to transmit said first stream using a first tone and to transmit said second stream using an orthogonal scheme. A layering scheme is used to transmit the base stream covering a smaller area and an enhanced stream is used to cover a large utilizing orthogonal scheme.
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公开(公告)号：AU2004306689A1
公开(公告)日：2005-04-21
申请号：AU2004306689
申请日：2004-08-17
Applicant: QUALCOMM INC
Inventor： SUBRAMANIAM ANAND D , KADOUS TAMER
Abstract: Techniques are provided to support successive interference cancellation (SIC) receiver processing with selection diversity whereby each of NT transmit antennas may be turned on or off. One symbol stream may be transmitted from each transmit antenna. A SIC receiver recovers the transmitted symbol streams in a specific order. Up to N T ! orderings are evaluated. For each ordering, N T post-detection SNRs are obtained for N T transmit antennas and used to determine N T data rates, where the data rate is zero if the post-detection SNR is worse than a minimum required SNR. An overall data rate is computed for each ordering based on the N T data rates. The ordering with the highest overall data rate is selected for use. Up to N T symbol streams arc processed at the data rates for the selected ordering and transmitted. The transmitted symbol streams are recovered in accordance with the selected ordering.
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公开(公告)号：MY144667A
公开(公告)日：2011-10-31
申请号：MYPI20043777
申请日：2004-09-16
Applicant: QUALCOMM INC
Inventor： TAMER KADOUS , SUBRAMANIAM ANAND D
Abstract: TECHNIQUES ARE PROVIDED TO SUPPORT SUCCESSIVE INTERFERENCE CANCELLATION (SIC) RECEIVER PROCESSING WITH SELECTION DIVERSITY WHEREBY EACH OF NT TRANSMIT ANTENNAS MAY BE TURNED ON OR OFF. ONE SYMBOL STREAM MAY BE TRANSMITTED FROM EACH TRANSMIT ANTENNA. A SIC RECEIVER RECOVERS THE TRANSMITTED SYMBOL STREAM IN A SPECIFIC ORDER. UP TO NT! ORDERINGS ARE EVALUATED. FOR EACH ORDERING, NT POST-DETECTION SNRS ARE OBTAINED FOR NT TRANSMIT ANTENNAS AND USED TO DETERMINE NT DATA RATES, WHERE THE DATA RATE IS ZERO IF THE POST-DETECTION SNR IS WORSE THAN A MINIMUN REQUIRED SNR. AN OVERALL DATA RATE IS COMPUTED FOR EACH ORDERING BASED ON THE NT DATA RATES. THE ORDERING WITH THE HIGHEST OVERALL DATA RATE IS SELECTED FOR USE. UP TO NT SYSMBOL STREAM ARE PROCESSES AT THE DATA RATES FOR THE SELECTED ORDERING AND TRANSMITTED. THE TRANSMITTED SYMBOL STREAMS ARE RECOVERED IN ACCORDANCE WITH THE SELECTED ORDERING.
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公开(公告)号：AU2004307128B8
公开(公告)日：2008-05-08
申请号：AU2004307128
申请日：2004-10-22
Applicant: QUALCOMM INC
Inventor： LING FUYUN , MANTRAVADI ASHOK , MURALI RAMASWAMY , WALKER KENT G , VIJAYAN RAJIV , SUBRAMANIAM ANAND D
Abstract: A method of broadcasting data in a wireless broadcast network, comprising multiplexing data for a wide-area transmission onto a first transmission span, the wide-area transmission being sent from a plurality of transmitters in the network; multiplexing data for a local transmission onto a second transmission span, wherein the multiplexing is onto frequency subbands pseudo-randomly selected from among all usable frequency subbands and the local transmission being sent from a subset of the plurality of transmitters; selecting the first and second transmission spans based on an amount of data to broadcast for the wide-area transmission and an amount of data to broadcast for the local transmission; and broadcasting the local and wide-area transmissions via a wireless link, wherein the data for the wide-area transmission and the data for the local transmission are time division multiplexed (TDM) at each base station, and wherein the first and second transmission spans are first and second time segments, respectively, of a frame of a predetermined time duration as well as a corresponding system.
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