公开(公告)号：CA2219423C

公开(公告)日：2005-07-05

申请号：CA2219423

申请日：1996-04-22

Applicant: QUALCOMM INC

Inventor： ZEHAVI EPHRAIM ,  WOLF JACK K ,  SCHIFF LEONARD N

IPC: H04B7/15 ,  H04J3/24 ,  H04J11/00 ,  H04J13/00 ,  H04L1/00 ,  H04L12/28 ,  H04L12/56 ,  H04W72/04 ,  H04L12/20 ,  H04Q7/22 ,  H04B1/69

Abstract: The present invention discloses a variable rate transmission system wherein a packet of variable rate data generated by a variable rate data source (20) is modulated on traffic channel by traffic channel modulator (30) if the capacity of said traffic channel is greater than or equal to said data rate of said packet. The packet of variable rate data is modulated onto traffic channel by traffic channel modulator (30) and at least one overflow channel by traffic channel modulator (32) if the capacity of said traffic channel is less than said data rate. The present invention further discloses a receiving system for receiving variable rate data wherein a received packet of variable rate data is received on traffic channel if the capacity of said traffic channel is great er than or equal to a data rate of said packet and wherein a packet of variable rate data is received on traffic channel and at least one overfl ow channel if the capacity of said traffic channel is less than said data rate.

公开(公告)号：FI115352B

公开(公告)日：2005-04-15

申请号：FI965180

申请日：1996-12-20

Applicant: QUALCOMM INC

Inventor： ANTONIO FRANKLIN P ,  WOLF JACK K ,  GILHOUSEN KLEIN S ,  ZEHAVI EPHRAIM

IPC: H01Q3/26 ,  H04B1/7085 ,  H01Q3/24 ,  H04B1/7117 ,  H04B1/712 ,  H04B7/26 ,  H04L1/06 ,  H04W16/28 ,  H04Q7/36

Abstract: A system and method for adaptively sectorizing channel resources within a digital cellular communication system is disclosed herein. The system includes an antenna arrangement for providing at least first and second electromagnetic beams for receiving a first information signal transmitted by a specific one of a plurality of users, thereby generating first and second received signals. A first set of beam-forming signals are then generated from the first and second received signals. A demodulating receiver is provided for demodulating at least first and second beam-forming signals included within the first set of beam-forming signals, thereby producing first and second demodulated signals. The system further includes a tracking network for tracking multipath information signals, received from various positions and angles of incidence, based on comparison of the first and second demodulated signals.

公开(公告)号：PT767994E

公开(公告)日：2004-02-27

申请号：PT95924673

申请日：1995-06-22

Applicant: QUALCOMM INC

Inventor： ANTONIO FRANKLIN P ,  GILHOUSEN KLEIN S ,  ZEHAVI EPHRAIM ,  WOLF JACK K

IPC: H01Q3/26 ,  H04B1/7085 ,  H01Q3/24 ,  H04B1/7117 ,  H04B1/712 ,  H04B7/26 ,  H04L1/06 ,  H04W16/28 ,  H04Q7/36

Abstract: A system and method for adaptively sectorizing channel resources within a digital cellular communication system is disclosed herein. The system includes an antenna arrangement for providing at least first and second electromagnetic beams for receiving a first information signal transmitted by a specific one of a plurality of users, thereby generating first and second received signals. A first set of beam-forming signals are then generated from the first and second received signals. A demodulating receiver is provided for demodulating at least first and second beam-forming signals included within the first set of beam-forming signals, thereby producing first and second demodulated signals. The system further includes a tracking network for tracking multipath information signals, received from various positions and angles of incidence, based on comparison of the first and second demodulated signals.

公开(公告)号：DK0767994T3

公开(公告)日：2003-11-24

申请号：DK95924673

申请日：1995-06-22

Applicant: QUALCOMM INC

Inventor： ANTONIO FRANKLIN P ,  GILHOUSEN KLEIN S ,  ZEHAVI EPHRAIM ,  WOLF JACK K

IPC: H01Q3/24 ,  H01Q3/26 ,  H04B1/7085 ,  H04B1/7117 ,  H04B1/712 ,  H04B7/26 ,  H04L1/06 ,  H04W16/28 ,  H04Q7/36

Abstract: A system and method for adaptively sectorizing channel resources within a digital cellular communication system is disclosed herein. The system includes an antenna arrangement for providing at least first and second electromagnetic beams for receiving a first information signal transmitted by a specific one of a plurality of users, thereby generating first and second received signals. A first set of beam-forming signals are then generated from the first and second received signals. A demodulating receiver is provided for demodulating at least first and second beam-forming signals included within the first set of beam-forming signals, thereby producing first and second demodulated signals. The system further includes a tracking network for tracking multipath information signals, received from various positions and angles of incidence, based on comparison of the first and second demodulated signals.

公开(公告)号：AU2002359587A1

公开(公告)日：2003-06-17

申请号：AU2002359587

申请日：2002-12-03

Applicant: QUALCOMM INC

Inventor： MILNE RYAN ,  BUTLER BRIAN K ,  WOLF JACK K

IPC: H03M13/15 ,  H03M13/19 ,  H03M13/37

Abstract: Techniques for efficiently performing erasure-and-single-error correction block decoding on a received block of symbols previously coded column-wise with an (N, K) linear block code and row-wise with an error detection code (e.g., a CRC code). Initially, each row of the received block is marked as either an erased row or an un-erased row. To perform erasure-and-single-error correction block decoding on the received block, a codeword corresponding to a column of the received block containing an undetected symbol error is initially identified. The location of the symbol error in the codeword is then determined based on a particular block decoding scheme and corresponding to the selected (N, K) block code. The row of the received block containing the symbol error is then marked as an erased row. Block decoding may then be performed for the received block with the newly marked erased row containing the symbol error.

公开(公告)号：AU759184B2

公开(公告)日：2003-04-10

申请号：AU8145298

申请日：1998-06-16

Applicant: QUALCOMM INC

Inventor： VIJAYAN RAJIV ,  ODENWALDER JOSEPH P ,  WOLF JACK K ,  ZEHAVI EPHRAIM ,  LEE CHONG U

IPC: H04N21/2315 ,  H03M13/15 ,  H03M13/25 ,  H03M13/27 ,  H03M13/29 ,  H03M13/31 ,  H03M13/45 ,  H04J11/00 ,  H04L1/00 ,  H04L27/26 ,  H04N20060101 ,  H04N21/2383 ,  H04N21/438 ,  H04N7/24

Abstract: In an orthogonal frequency division multiplexing (OFDM) system which uses an outer Reed-Solomon encoder and interleaver an inner convolutional encoder, after the inner convolutional encoding the data bits are interleaved, and then grouped into symbols, each symbol having "m" bits. After grouping, the symbols are mapped to a complex plane using quadrature amplitude modulation (QAM). Thus, bits, not symbols, are interleaved by the inner interleaver. A receiver performs a soft decision regarding the value of each bit in each complex QAM symbol received.

公开(公告)号：AU2002323182A1

公开(公告)日：2003-03-03

申请号：AU2002323182

申请日：2002-08-15

Applicant: QUALCOMM INC

Inventor： WOLF JACK K ,  BUTLER BRIAN K ,  CHEN TAO ,  WEI YONGBIN ,  ODENWALDER JOSEPH P ,  TIEDEMANN EDWARD G JR

IPC: H04L12/56 ,  H04B7/005 ,  H04B7/26 ,  H04W28/04 ,  H04W52/02 ,  H04W52/32 ,  H04W72/00 ,  H04H1/00 ,  H04L1/00

Abstract: A Method and System for Utilization of an Outer Decoder in a Broadcast Services Communication System is described. An outer decoder and an inner decoder encode a block of information to be transmitted, to improve protection by adding redundancy. The redundancy permits decoding of the information from less than a complete encoded block of information. Consequently, the receiving station determines when sufficient amount of information for successful decoding has been received, and utilizes the time remaining before the next block of information arrives to perform other activities, e.g., hard handoff on a broadcast channel, inter-frequency hard handoff, and other activities. Alternatively, the receiving station can cease reception, thus decrease power consumption. Furthermore, part of the information block may be utilized for transmission of signaling information.

公开(公告)号：BR9806005A

公开(公告)日：2001-09-18

申请号：BR9806005

申请日：1998-06-16

Applicant: QUALCOMM INC

Inventor： VIJAYAN RAJIV ,  ODENWALDER JOSEPH P ,  WOLF JACK K ,  ZEHAVI EPHRAIM ,  LEE CHONG U

IPC: H04N21/2315 ,  H03M13/15 ,  H03M13/25 ,  H03M13/27 ,  H03M13/29 ,  H03M13/31 ,  H03M13/45 ,  H04J11/00 ,  H04L1/00 ,  H04L27/26 ,  H04N20060101 ,  H04N21/2383 ,  H04N21/438 ,  H04N7/24

Abstract: In an orthogonal frequency division multiplexing (OFDM) system which uses an outer Reed-Solomon encoder and interleaver an inner convolutional encoder, after the inner convolutional encoding the data bits are interleaved, and then grouped into symbols, each symbol having "m" bits. After grouping, the symbols are mapped to a complex plane using quadrature amplitude modulation (QAM). Thus, bits, not symbols, are interleaved by the inner interleaver. A receiver performs a soft decision regarding the value of each bit in each complex QAM symbol received.

公开(公告)号：FI990353A

公开(公告)日：1999-04-19

申请号：FI990353

申请日：1999-02-18

Applicant: QUALCOMM INC

Inventor： VIJAYAN RAJIV ,  ZEHAVI EPHRAIM ,  ODENWALDER JOSEPH P ,  LEE CHONG U ,  WOLF JACK K

IPC: H04N21/2315 ,  H03M13/15 ,  H03M13/25 ,  H03M13/27 ,  H03M13/29 ,  H03M13/31 ,  H03M13/45 ,  H04J11/00 ,  H04L1/00 ,  H04L27/26 ,  H04N20060101 ,  H04N21/2383 ,  H04N21/438 ,  H04J

Abstract: In an orthogonal frequency division multiplexing (OFDM) system which uses an outer Reed-Solomon encoder and interleaver an inner convolutional encoder, after the inner convolutional encoding the data bits are interleaved, and then grouped into symbols, each symbol having "m" bits. After grouping, the symbols are mapped to a complex plane using quadrature amplitude modulation (QAM). Thus, bits, not symbols, are interleaved by the inner interleaver. A receiver performs a soft decision regarding the value of each bit in each complex QAM symbol received.

公开(公告)号：ZA985386B

公开(公告)日：1999-04-07

申请号：ZA985386

申请日：1998-06-19

Applicant: QUALCOMM INC

Inventor： VIJAYAN RAJIV ,  ZEHAVI EPHRAIM ,  ODENWALDER JOSEPH P ,  LEE CHONG U ,  WOLF JACK K

IPC: H03M13/15 ,  H03M13/25 ,  H03M13/27 ,  H04N21/2315 ,  H03M13/29 ,  H03M13/31 ,  H03M13/45 ,  H04J11/00 ,  H04L1/00 ,  H04L27/26 ,  H04N20060101 ,  H04N21/2383 ,  H04N21/438 ,  H04L ,  H04B ,  G06F

Abstract: In an orthogonal frequency division multiplexing (OFDM) system which uses an outer Reed-Solomon encoder and interleaver an inner convolutional encoder, after the inner convolutional encoding the data bits are interleaved, and then grouped into symbols, each symbol having "m" bits. After grouping, the symbols are mapped to a complex plane using quadrature amplitude modulation (QAM). Thus, bits, not symbols, are interleaved by the inner interleaver. A receiver performs a soft decision regarding the value of each bit in each complex QAM symbol received.