公开(公告)号：HK1062509A1

公开(公告)日：2004-11-05

申请号：HK04104684

申请日：2004-06-30

Applicant: QUALCOMM INC

Inventor： RAZOUMOV LEONID ,  LUNDBY STEIN A ,  HOLTZMAN JACK M ,  TIEDEMANN EDWARD G ,  ODENWALDER JOSEPH P

IPC: H04L20060101 ,  H04B1/7103 ,  H04B7/005 ,  H04L1/00 ,  H04L1/20 ,  H04W52/36

Abstract: A method for coherent estimation of the traffic-to-pilot energy ratio is presented. A received preamble is decoded (20), and then re-encoded (22). The received preamble is then multiplied by the re-encoded preamble (23). The results are summmed (24), squared (26), and then divided by a pilot energy value (28). In another method, a message (41) carrying energy information can be inserted between a subpacket preamble (40) and a subpacket (42).

公开(公告)号：HK1061764A1

公开(公告)日：2004-09-30

申请号：HK04104610

申请日：2004-06-28

Applicant: QUALCOMM INC

Inventor： ODENWALDER JOSEPH P

IPC: H04J99/00 ,  H04L20060101 ,  H04L1/00

Abstract: Techniques to support adaptive multi-rate (AMR) coded data in a cdma2000 communication system. A number of AMR modes are defined for speech information (of various rates), silence descriptor (SID) (of various types), and blank frame. The speech and SID data are provided in frames conforming to frame formats defined by the cdma2000 system. A CRC is used for each AMR frame (e.g., 12-bit CRC for speech and 8-bit CRC for SID). The AMR data and CRC bits are further coded with a convolutional encoder. Blind rate detection is used to detect the frame rate of the transmitted AMR frames. To support blind rate detection, the number of bits provided to the CRC generator is different for each blind rate to be detected. If two or more blind rates have the same number of bits (such as for SID), then format bits are provided to distinguish between these rates.

公开(公告)号：FI114125B

公开(公告)日：2004-08-13

申请号：FI961414

申请日：1996-03-28

Applicant: QUALCOMM INC

Inventor： TIEDEMANN JR EDWARD G ,  GILHOUSEN KLEIN S ,  ODENWALDER JOSEPH P ,  ZEHAVI EPHRAIM ,  LEVIN JEFFREY A ,  WHEATLEY CHARLES E III

IPC: H04B7/00 ,  H04B7/005 ,  H04B7/26 ,  H04L1/00 ,  H04L1/08 ,  H04L1/12

Abstract: A method and apparatus for controlling transmission power in a variable rate communication system is disclosed. The method disclosed provides for a closed loop power control method. A first remote station controls the transmission power of a second remote station by transmitting a rate dependent power control signal to the second remote communication station. Since only the second communication knows its transmission rate a priori, it must determine its course of action in accordance with both the received power control signal and the knowledge of its transmission rate.

公开(公告)号：NO20091349L

公开(公告)日：2004-01-06

申请号：NO20091349

申请日：2009-04-01

Applicant: QUALCOMM INC

Inventor： ODENWALDER JOSEPH P ,  SARKAR SANDIP ,  LUNDBY STEIN A ,  WEI YONGBIN ,  TIEDEMANN JR EDWARD G ,  OSES DAVID PUIG

IPC: H04W28/18 ,  H04L1/00 ,  H04L12/56

公开(公告)号：AU767672B2

公开(公告)日：2003-11-20

申请号：AU1403599

申请日：1998-11-12

Applicant: QUALCOMM INC

Inventor： CHEN TAO ,  ODENWALDER JOSEPH P ,  TIEDEMANN EDWARD G JR ,  WILLENEGGER SERGE

IPC: H04L1/00 ,  H04L1/08 ,  H04L1/18

Abstract: An efficient retransmission of data using symbol accumulation wherein the packet received in error is retransmitted at a lower energy-per-bit level concurrently in the same frame with the new packet. The destination device receives the data transmission and retransmission, demodulate the signal, and separates the received data into the new and retransmitted packet. The destination device then accumulates the energy of the retransmitted packet with the energy already accumulated for the packet received in error and decodes the accumulated packet. The accumulation of the additional energy provided by the subsequent retransmissions improves the probability of a correct decoding. The throughput rate can be improved since the packet received in error is retransmitted concurrently with the transmission of the new data packet. The capacity is maximized since the retransmission of the packet received in error is at a lower energy level than that of the new packet.

公开(公告)号：CA2475517A1

公开(公告)日：2003-08-28

申请号：CA2475517

申请日：2003-02-19

Applicant: QUALCOMM INC

Inventor： ODENWALDER JOSEPH P ,  LUNDBY STEIN A ,  PUIG OSES DAVID ,  GAAL PETER

IPC: H04B7/005 ,  H04B17/00 ,  H04W52/14 ,  H04W72/08 ,  H04Q7/38

Abstract: Methods and apparatus are presented for improving the feedback of channel information to a serving base station, which allows a reduction in the rever se link load while allowing the base station to improve the forward link data throughput. Over a channel quality indicator channel, three subchannels are generated; the re-synch subchannel (600), the differential feedback subchannel(620), and the transition indicator subchannel (630). The information carried on each subchannel can be used separately or together by a base station to selectively update internal registers storing channel conditions. The channel conditions are used to determine transmission format s, power levels, and data rates of forward link transmissions.

公开(公告)号：BR0008497A

公开(公告)日：2002-09-24

申请号：BR0008497

申请日：2000-02-25

Applicant: QUALCOMM INC

Inventor： TIEDEMANN EDWARD G JR ,  TERASAWA DAISUKE ,  SARKAR SANDIP ,  JOU YU-CHEUN ,  ODENWALDER JOSEPH P ,  SHANBHAG ABIHIJT ,  WILLENEGGER SERGE

IPC: H04B1/7073 ,  H04J3/06 ,  H04J13/00 ,  H04W36/08 ,  H04W56/00 ,  H04Q7/38

Abstract: A method and system that enables faster acquisition of the forward link signal of a target base station in a mixed network of synchronous and asynchronous base stations is disclosed. The serving base station transmits in a neighbor list an estimated timing error 417 between the serving base station and a target base station. By utilizing the timing information, a mobile station estimates the relative time offset 408 between forward link signals received from the serving base station and signals received from the target base station. Timing information acquired during handoff enables accurate updating of the estimated timing error 417 subsequently transmitted in the neighbor lists by the base stations.

公开(公告)号：CA2430560A1

公开(公告)日：2002-06-06

申请号：CA2430560

申请日：2001-11-20

Applicant: QUALCOMM INC

Inventor： SARKAR SANDIP ,  ODENWALDER JOSEPH P ,  HOLTZMAN JACK M

IPC: H04J11/00 ,  H04J13/00 ,  H04L1/00 ,  H04L1/08 ,  H04L12/56 ,  H04L29/06 ,  H04L29/08 ,  H04W4/18 ,  H04W28/06 ,  H04J13/02

Abstract: In a communication system wherein packetized data is transmitted to remote stations in a channel sensitive manner, a preamble must be transmitted with each discrete data transmission to the remote station. Method and apparatus are presented herein for generating an optimized preamble structure for use with transmissions of packetized data. An optimized preamble structure is on e that is easily detectable and decodable, yet occupies a small fractional overhead of the entire transmission to the remote station. Information that needs to be carried bz a preamble are used to create a basic structural unit , which is then redundantly permuted.

公开(公告)号：BR9815358A

公开(公告)日：2001-10-16

申请号：BR9815358

申请日：1998-11-30

Applicant: QUALCOMM INC

Inventor： ODENWALDER JOSEPH P ,  LUNDBY STEIN A ,  WHEATLEY CHARLES E III ,  TIEDEMANN EDWARD G JR

IPC: H04B7/06 ,  H04L1/00 ,  H04L1/06

Abstract: A method and apparatus for providing diversity transmissions to a mobile unit from a transmitting station having at least first and second antennas by repeatedly switching between the two antennas during the transmission of information to the receiving unit. Message information is transmitted from the first antenna in the transmitting station to the receiving unit. After the start of the transmission of the message information from the first antenna, transmission of the message information from the first antenna to the receiving unit terminates and transmission of the message information from the second antenna in the transmitting station to the receiving unit is initiated. Some time after transmission of the message information from second antenna is initiated, the transmission of the message information from the second antenna to the receiving unit terminates and transmission of the message information from the first antenna in the transmitting station to the receiving unit is initiated. Repeated switching between the first and second antennas is achieved by repeating the process. The switching results in diversity transmissions that improve the ability of a receiving unit to receive the coded and interleaved transmitted message information from the transmitting station. The interleaver disperses the encoded symbols in each antenna dwell period such that the decoder decisions are based on a mix of symbols form each antenna. Therefore the decoder decisions are unreliable only when the mix of symbols from the different antennas, with different fading characteristics, are unreliable over the span of symbols the decoder uses in its decision process.

公开(公告)号：AU736358B2

公开(公告)日：2001-07-26

申请号：AU3154697

申请日：1997-05-28

Applicant: QUALCOMM INC

Inventor： ODENWALDER JOSEPH P ,  JOU YU-CHEN ,  TIEDEMANN EDWARD G JR

IPC: H04B1/707 ,  H04B7/24 ,  H04B7/26 ,  H04J13/00 ,  H04J13/18 ,  H04L1/00

Abstract: A method for demodulating a received signal comprising complex multiplying (202,204) the received signal by a complex pseudonoise code to produce a complex pseudonoise despread signal (XI,XQ); filtering (214) the complex pseudonoise despread signal to provide a complex filtered pilot signal; multiplying (210) the complex pseudo-noise despread signal by a first demodulation code to provide a first complex demodulated data signal; and phase rotating and scaling (216,218) the first complex demodulated clara signal in accordance with the complex-filtered pilot signal to provide a first soft decision data.