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公开(公告)号：PT956661E
公开(公告)日：2007-06-18
申请号：PT98903591
申请日：1998-01-27
Applicant: QUALCOMM INC
Inventor： JOU YU-CHEUN , ODENWALDER JOSEPH P , WILLENEGGER SERGE , TIEDEMANN EDWARD G JR
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公开(公告)号：ES2275173T3
公开(公告)日：2007-06-01
申请号：ES04075608
申请日：1997-05-28
Applicant: QUALCOMM INC
Inventor： ODENWALDER JOSEPH P , JOU YU-CHEN , TIEDEMANN EDWARD G JR
Abstract: Un procedimiento para generar datos para la transmisión desde una unidad de abonado a una estación base, comprendiendo el procedimiento: modular (150a-150d) cada uno de una pluralidad de datos codificados de canal con un código asociado para producir una pluralidad de flujos de símbolos modulados; ajustar la ganancia (152-156, 158a, 158b) de cada uno de la pluralidad de flujos de símbolos modulados; sumar (160) al menos dos de la pluralidad de flujos de símbolos modulados a al menos un flujo combinado; y multiplicar en complejo (164a a 164d) dicho al menos un flujo combinado con un código de seudorruido complejo.
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公开(公告)号：AT360924T
公开(公告)日：2007-05-15
申请号：AT04075608
申请日：1997-05-28
Applicant: QUALCOMM INC
Inventor： ODENWALDER JOSEPH P , JOU YU-CHEN , TIEDEMANN EDWARD G JR
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.
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公开(公告)号：DK1013020T3
公开(公告)日：2007-05-07
申请号：DK98948118
申请日：1998-09-08
Applicant: QUALCOMM INC
Inventor： TIEDEMANN EDWARD G JR , LUNDBY STEIN A , ODENWALDER JOSEPH P
IPC: H04J11/00 , H04B1/707 , H04B7/26 , H04J13/00 , H04J13/10 , H04W16/00 , H04W16/24 , H04W16/32 , H04W48/08 , H04W48/16
Abstract: A method and apparatus for providing orthogonal spot beams (14a, 14b), sectors (16a, 16b), and picocells (18). The transmissions can be made orthogonal by using orthogonal auxiliary pilots and different Walsh traffic channels in adjacent areas. In accordance with the IS-95 standard, the pilot signal is covered with the 64-chip Walsh sequence zero. The 64-chip all zeros Walsh sequence can be designated as P and the 64-chip all one sequence can be designated as M. In the present invention, additional pilot signals can be provided by concatenating 64-chip all zeros P and all ones M sequences. Thus, for two pilot signals, pilot Walsh sequences of PP and PM can be used. For four pilot signals, pilot Walsh sequences of PPPP, PMPM, PPMM, and PMMP can be used. The present invention can be extended such that any required number of pilot Walsh sequences can be generated by substituting each bit in an K-bit Walsh sequence with the 64-chip all zeros P or all ones M sequence depending on the value of that bit.
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公开(公告)号：CA2312923C
公开(公告)日：2006-11-28
申请号：CA2312923
申请日：1998-11-30
Applicant: QUALCOMM INC
Inventor： TIEDEMANN EDWARD G JR , ODENWALDER JOSEPH P , LUNDBY STEIN A , WHEATLEY CHARLES E III
Abstract: A method and apparatus for providing diversity transmissions to a receiving unit. A transmitting station used to communicate with the receiving unit may have a first and second antenna (34, 36) and repeatedly switch between the two antennas (34, 36) during the transmission of information to the receiving unit. Transmission of information may be initiated from a first antenna (34), and when terminated, transmission of information from a second antenna (36) is initiated. Likewise, after transmission of information from the second antenna (36) is terminated, transmission of information from the first anten na (34) continues. This "swapping" of antennas continues until the information transfer ends. Antenna swapping results in diversity transmissions that improve the ability of the receiving unit to receive a coded and interleaved information transmitted from the transmitting statio n. The interleaver may disperse the encoded symbols in each antenna dwell period such that decoder decisions are based on a mix of symbo ls from each antenna.
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Patent Agency Ranking
公开(公告)号：BRPI0414159A
公开(公告)日：2006-10-31
申请号：BRPI0414159
申请日：2004-09-08
Applicant: QUALCOMM INC
Inventor： LUNDBY STEIN A , JAIN AVINASH , ODENWALDER JOSEPH P , SARKAR SANDIP , CHEN TAO , WEI YONGBIN
Abstract: In accordance with an exemplary embodiment of the invention, an apparatus, system, and method efficiently manage reverse link resources by allowing a mobile station to select between transmitting a payload a standard power level and transmitting a smaller payload at a boosted power level. The mobile station, therefore, can autonomously select a QoS (Quality of Service) level for physical layer packets. Based on reverse link transmission information received from a base station, the mobile station derives a reverse link transmission guideline defining the power levels and associated payloads for at least a standard service and boosted service. The mobile station selects a reverse link transmission power level from a plurality of power levels including at least a standard reverse link transmission power level associated with a standard payload size and a boosted reverse link transmission power level associated with a boosted payload size where the standard payload size is greater than the boosted payload size.
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公开(公告)号：AT340448T
公开(公告)日：2006-10-15
申请号：AT01270021
申请日：2001-11-29
Applicant: QUALCOMM INC
Inventor： RAZOUMOV LEONID , LUNDBY STEIN A , HOLTZMAN JACK M , TIEDEMANN EDWARD G , ODENWALDER JOSEPH P
IPC: 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).
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公开(公告)号：CA2256416C
公开(公告)日：2006-10-10
申请号：CA2256416
申请日：1997-05-28
Applicant: QUALCOMM INC
Inventor： ODENWALDER JOSEPH P , JOU YU-CHEUN , TIEDMANN EDWARD G JR
Abstract: A method and apparatus for high rate CDMA wireless communication in which a set of individually gain adjusted subscriber channels are formed via the use of a set of orthogonal subchannel codes (W1) having a small number of PN spreading chips per orthogonal waveform period. Data to be transmitted via one of the transmit channels is low code rate error correction encoded (134) and sequence repeated before being modulated with one of the subchannel codes, gain adjusted (152, 154, 156, 158), and summed (160) with data modulated using the other subchannel codes. The resulting summed data is modulated using a user long code and a pseudorandom spreading code (PN code) and upconverted for transmission.
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公开(公告)号：HK1084785A1
公开(公告)日：2006-08-04
申请号：HK06104780
申请日：2000-09-19
Applicant: QUALCOMM INC
Inventor： ODENWALDER JOSEPH P
IPC: H03M13/27 , H04L20060101 , H04B1/04 , H04B1/707 , H04B7/005 , H04B7/26 , H04L1/00 , H04L1/08 , H04W20090101 , H04W52/04
Abstract: A set of individually gain adjusted subscriber channels (402, 404, 411, 415) are formed via the use of a set of orthogonal subchannel codes (Wc, Ws, Wf) having a small number of PN spreading chips per orthogonal waveform period. Data to be transmitted via one of the transmit channels is low code rate error correction encoded and sequence repeated before being modulated with one of the subchannel codes, gain adjusted, and summed with data modulated using the other subchannel codes. The resulting summed data (410, 420) is modulated using a user long code and a pseudorandom spreading code (PN code) and upconverted for transmission. The use of the short orthogonal codes provides interference suppression while still allowing extensive error correction coding and repetition for time diversity to overcome the Raleigh fading commonly experienced in terrestrial wireless systems. The set of sub-channel codes may comprise four Walsh codes, each orthogonal to the remaining codes of the set. The use of four sub-channels is preferred as it allows shorter orthogonal codes to be used, however, the use of a greater number of channels and therefore longer codes is acceptable. Preferably, pilot data is transmitted via a first one of the transmit channels and power control data transmitted via a second transmit channel. The length, or number of chips, in each channel code may be different to further reduce the peak-to-average transmit power for higher rate data transmission.
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公开(公告)号：BRPI0408073A
公开(公告)日：2006-03-21
申请号：BRPI0408073
申请日：2004-03-05
Applicant: QUALCOMM INC
Inventor： ODENWALDER JOSEPH P
IPC: H04J11/00
Abstract: Systems and methods for improving the performance of direct-sequence spread-spectrum communication systems. In one embodiment, a system comprises at least one communication channel that utilizes two different orthogonal spreading codes and corresponding portions of the available orthogonal code space. Portions of the data processed by the communication channel are demultiplexed into different streams and covered with corresponding, different orthogonal spreading codes. The streams covered by the different orthogonal codes are then combined and transmitted via the same communication channel. One embodiment utilizes at least two different Walsh codes of different lengths (+- and ++--) in order to make use of the three quarters of the Walsh space not utilized by low-rate legacy channels.
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