公开(公告)号：AT483279T

公开(公告)日：2010-10-15

申请号：AT07016079

申请日：2000-01-28

Applicant: QUALCOMM INC

Inventor： WILLENEGGER SERGE ,  HOLTZMAN JACK M ,  SHANBHAG ABHIJIT

IPC: H04B1/707 ,  H04J11/00 ,  H04Q7/38

Abstract: The present invention is a novel and improved method and apparatus for reducing peak to average ratio in a system using auxiliary pilot channels as described in the TIA/EIA TR45.5 "cdma2000 ITU-R RTT Candidate Submission" to the ITU for consideration in the third generation wireless communication systems. A first method proposed in the present invention to deal with the above stated problem is to alter the phase of the auxiliary pilot channels to reduce to prevent the auxiliary pilot channels from adding constructively. A second method proposed in the present invention to deal with the above stated problem is to gate out the portion of the auxiliary pilot channels that add constructively. The present invention also proposes a novel demodulator design for receiving signals using the modified auxiliary pilot signals.

公开(公告)号：NO328894B1

公开(公告)日：2010-06-07

申请号：NO20034052

申请日：2003-09-12

Applicant: QUALCOMM INC

Inventor： SAINTS KEITH W ,  SINDHUSHAYANA NAGABHUSHANA T ,  HOLTZMAN JACK M ,  LING FUNYUN ,  CHEN TAO ,  WHEATLEY III CHARLES E

IPC: H04B7/005 ,  H04B1/04 ,  H04B7/26 ,  H04L1/00 ,  H04L1/20 ,  H04W52/12

Abstract: Techniques to adjust the setpoint of a power control loop in a wireless communication system. The setpoint may be adjusted based on frame status indicative of erased/good decoded frames, one or more (typically soft) metrics indicative of the confidence in the decoded results, power surplus/deficit indicative of the difference between the received signal quality and the setpoint and a threshold Eb/Nt needed for the desired level of performance, or a combination thereof. The metrics include one of a re-encoded power metric and a modified Yamamoto metric. The setpoint may be adjusted in different manners and/or by different amounts depending on the above-noted factors. The techniques may be employed for forward and/or reverse links in CDMA systems.

公开(公告)号：AT436124T

公开(公告)日：2009-07-15

申请号：AT07111066

申请日：2004-01-16

Applicant: QUALCOMM INC

Inventor： HOLTZMAN JACK M ,  BAO GANG ,  OSES DAVID PUIG

IPC: H04B7/005 ,  H04L1/00 ,  H04L1/16 ,  H04L1/18 ,  H04L1/20 ,  H04W52/12 ,  H04W52/36 ,  H04W52/50

Abstract: Techniques for improved margin control in a data communication system are disclosed. In one aspect, margin is adjusted in response to a first subpacket error rate (350). In another aspect, margin is further adjusted in response to an overall packet error rate (350). In yet another aspect, the first subpacket error rate is adjusted in response to an overall packet error rate (350). Various other aspects are also presented. These aspects have the benefit of responsive margin control when the overall packet error rate is relatively low, resulting in improved data throughput and increased system capacity.

公开(公告)号：NO325815B1

公开(公告)日：2008-07-21

申请号：NO20010828

申请日：2001-02-19

Applicant: QUALCOMM INC

Inventor： LUNDBY STEIN A ,  TIEDEMANN JR EDWARD G ,  HOLTZMAN JACK M ,  TERASAWA DAISUKE

IPC: H04B7/005 ,  H04B1/707 ,  H04B1/7097

Abstract: A method for limiting peak transmit power in a CDMA communication system by transmitting a first communication signal having a first high transmit power region, and transmitting a second communication signal having a second high transmit power region. A first and a second communication signal are time offset to prevent the first and second high transmit power regions from occurring simultaneously. Time shifting only a portion of the first and second communication signals is also taught. The first and second communication signals can also include respective first and second low transmit power regions. The time offset can be selected to align one of the first and second high transmit power regions with one of the first and second low transmit power regions. The total transmit power signal can be determined and the time offset can be selected to minimize a peak level of the total transmit power signal. The communication signals are separated into a plurality of portions and portions of the first and second communication signals are time offset to re-order the sequence of transmission of the plurality of portions.

公开(公告)号：HK1107616A1

公开(公告)日：2008-04-11

申请号：HK07113049

申请日：2007-11-29

Applicant: QUALCOMM INC

Inventor： HOLTZMAN JACK M ,  BAO GANG ,  OSES DAVID PUIG

IPC: H04B20100101 ,  H04B7/005 ,  H04L1/00 ,  H04L1/16 ,  H04L1/18 ,  H04L1/20 ,  H04W52/12 ,  H04W52/36 ,  H04W52/50

Abstract: Techniques for improved margin control in a data communication system are disclosed. In one aspect, margin is adjusted in response to a first subpacket error rate (350). In another aspect, margin is further adjusted in response to an overall packet error rate (350). In yet another aspect, the first subpacket error rate is adjusted in response to an overall packet error rate (350). Various other aspects are also presented. These aspects have the benefit of responsive margin control when the overall packet error rate is relatively low, resulting in improved data throughput and increased system capacity.

公开(公告)号：AU2002255729B2

公开(公告)日：2007-10-25

申请号：AU2002255729

申请日：2002-03-15

Applicant: QUALCOMM INC

Inventor： SAINTS KEITH ,  WHEATLEY CHARLES E III ,  LING FUYUN ,  CHEN TAO ,  SINDHUSHAYANA NAGABHUSHANA ,  HOLTZMAN JACK M

IPC: H04B1/04 ,  H04B7/005 ,  H04B7/26 ,  H04L1/00 ,  H04L1/20

Abstract: Techniques to adjust the setpoint of a power control loop in a wireless communication system. The setpoint may be adjusted based on frame status indicative of erased/good decoded frames, one or more (typically soft) metrics indicative of the confidence in the decoded results, power surplus/deficit indicative of the difference between the received signal quality and the setpoint and a threshold Eb/Nt needed for the desired level of performance, or a combination thereof. The metrics include one of a re-encoded power metric and a modified Yamamoto metric. The setpoint may be adjusted in different manners and/or by different amounts depending on the above-noted factors. The techniques may be employed for forward and/or reverse links in CDMA systems.

公开(公告)号：DE602004008216D1

公开(公告)日：2007-09-27

申请号：DE602004008216

申请日：2004-01-16

Applicant: QUALCOMM INC

Inventor： HOLTZMAN JACK M ,  BAO GANG ,  OSES DAVID PUIG

IPC: H04B7/005 ,  H04L1/00 ,  H04L1/16 ,  H04L1/18 ,  H04L1/20 ,  H04W52/12 ,  H04W52/36 ,  H04W52/50

Abstract: Techniques for improved margin control in a data communication system are disclosed. In one aspect, margin is adjusted in response to a first subpacket error rate (350). In another aspect, margin is further adjusted in response to an overall packet error rate (350). In yet another aspect, the first subpacket error rate is adjusted in response to an overall packet error rate (350). Various other aspects are also presented. These aspects have the benefit of responsive margin control when the overall packet error rate is relatively low, resulting in improved data throughput and increased system capacity.

公开(公告)号：BR0208495A

公开(公告)日：2006-10-10

申请号：BR0208495

申请日：2002-03-28

Applicant: QUALCOMM INC

Inventor： SARKAR SANDIP ,  HOLTZMAN JACK M

IPC: H04B7/005 ,  H04B7/26

Abstract: Method and apparatus for power control in a packet-data switched communicaiton system by (30) adapting a transmission energy setpoint to transmission quality (104) and adjusted the retransmission energy setpoint accordingly (150)(110). In one embodiment, the retransmission energy setpoint is adjusted as a function of retransmission quality (164, 166, 168, 170).

公开(公告)号：BR0208834A

公开(公告)日：2005-01-18

申请号：BR0208834

申请日：2002-04-11

Applicant: QUALCOMM INC

Inventor： HOLTZMAN JACK M ,  RAZOUMOV LEONID

IPC: H04L12/28 ,  H04L12/56 ,  H04W28/22 ,  H04W28/24 ,  H04W72/08 ,  H04W72/12 ,  H04Q7/22

Abstract: A method (18) for scheduling packet data transmissions in a wireless communication system wherein a per-user Priority Function (PF) (24) is based on a channel condition indicated by a Rate Request Indicator (RRI). The method also considers fairness criteria dictated by predetermined Quality of Service (QOS) requirements. In one embodiment, the rate request indicator is a Data Rate Request (DRR). In another embodiment, the rate request indicator is Carrier-to-Interference (C/I) information. In the exemplary embodiment, the base station calculates a Priority Function (PF) for the multiple mobile users. Each PF is a function of the rate request indicator and the projected throughput of a given mobile user. In one embodiment, the predicted throughput is calculated by T′=(T′)α.

公开(公告)号：BR0010011A

公开(公告)日：2004-06-29

申请号：BR0010011

申请日：2000-05-01

Applicant: QUALCOMM INC

Inventor： HOLTZMAN JACK M

IPC: H04B1/7103 ,  H03M13/29 ,  H03M13/45 ,  H04B7/005 ,  H04L1/00 ,  H04Q7/38 ,  H04L25/02

Abstract: A method and corresponding apparatus separately estimates signal amplitude and noise in received signals, particularly symbols encoded using turbo codes. The method and apparatus, however, may be applied to such estimation in power control wireless systems (CDMA systems), other concatenated coding schemes, etc. A method and apparatus initially estimate the signal and noise, separately, in the received signal, such as by using curve fitting techniques. Thereafter, a finer estimate is provided by using the amplitude of received pilot symbols or using an estimate of the noise from the received pilot symbols.