公开(公告)号：AT453253T

公开(公告)日：2010-01-15

申请号：AT08011856

申请日：2002-02-06

Applicant: QUALCOMM INC

Inventor： LUNDBY STEIN

IPC: H04B7/005 ,  H04B7/26

公开(公告)号：AT415744T

公开(公告)日：2008-12-15

申请号：AT00943216

申请日：2000-06-27

Applicant: QUALCOMM INC

Inventor： LUNDBY STEIN

IPC: H04B7/005 ,  H04B7/26

Abstract: A method and apparatus for determining a position of a mobile satellite positioning system (SPS) receiver is described. A position of a mobile satellite positioning system (SPS) receiver is determined by initially determining a plurality of satellite pseudoranges between said mobile SPS receiver and a corresponding plurality of satellites. Then, at least one non-satellite pseudomeasurement is determined. Finally, a condition of at least one of said plurality of satellite pseudoranges is determined.

公开(公告)号：AT371304T

公开(公告)日：2007-09-15

申请号：AT00922120

申请日：2000-04-12

Applicant: QUALCOMM INC

Inventor： LUNDBY STEIN ,  SAINTS KEITH

IPC: H04B7/06 ,  H04B1/707 ,  H04B7/08 ,  H04B14/04 ,  H04L1/00 ,  H04L1/02 ,  H04L1/06

Abstract: Apparatuses for a transmitter and a receiver which enhance the performance of a system utilizing interleaving and transmit diversity by reordering the sequence of symbols transmitted along the different transmission channels. This enhancement is accomplished by providing different shuffling functions in conjunction with the interleavers and deinterleavers used with different transmission channels, which decreases the probability of loss of sequential symbols when transmission channels or antennas become correlated.

公开(公告)号：HK1064817A1

公开(公告)日：2005-02-04

申请号：HK04107381

申请日：2004-09-24

Applicant: QUALCOMM INC

Inventor： LUNDBY STEIN

IPC: H04B20060101 ,  H04B1/707 ,  H04B7/005 ,  H04B7/26 ,  H04L20060101 ,  H04L27/34 ,  H04L27/36 ,  H04L27/38

Abstract: In a communication system, a method and an accompanying apparatus provide for efficient modulation and demodulation processes. In a transmitter (100), a ratio of power level of a communication channel over power level of a pilot channel is determined to produce a power level ratio. The power level ratio is quantized within a finite digital word. A quantized quadrature amplitude modulation distance, in a quadrature amplitude modulation constellation, is determined based on the quantized power level ratio. A signal, in accordance with a quadrature amplitude modulation technique, is modulated using the quantized distance, and transmitted to a receiver (160).

公开(公告)号：WO0209294A3

公开(公告)日：2003-01-16

申请号：PCT/US0122757

申请日：2001-07-17

Applicant: QUALCOMM INC

Inventor： RAZOUMOV LEONID ,  LING FUNYUN ,  LUNDBY STEIN

IPC: G06F11/10 ,  H03M13/00 ,  H03M13/23 ,  H03M13/25 ,  H04L1/00

CPC classification number: H04L1/0069

Abstract: Techniques for puncturing symbols in a communications system are disclosed. S symbols are received for a frame having a capacity of N symbols, with S being greater than N. P symbols need to be punctured so that remaining symbols fit into the frame. A number of puncture distances, D1 through DN, are computed based on S and P. A particular number of symbol punctures is determined or each computed puncture distance. P1 through PN symbol punctures are then performed at the distances of D1 through DN, respectively. For a more even distribution of the symbol punctures, each of the distances D1 through DN can be selected to be greater than or equal to a minimum puncture distance Dmin defined as D min=[ S/P ], where [ ] denotes a floor operator. The symbol punctures at each computed distance can be performed together or distributed with symbol punctures at other distances. In the alternative, an accumulator is configured to wrap around after it has been incremented to a value of S , each increment being of size P . A symbol index is incremented by one each time the accumulator is incremented by P , until the symbol index exceeds the value S . The progress is advantageously begun with a puncture. Each time the accumulator wraps around, another puncture is performed. As another alternative, puncturing can be combined with symbol repetition.

Abstract translation: 公开了一种在通信系统中对符号进行穿孔的技术。 对于具有N个符号的容量的帧接收S个符号，其中S大于N.P个符号需要被穿孔，使得剩余符号适合于帧。 基于S和P计算多个穿刺距离D1至DN。确定特定数量的符号穿孔或每个计算的穿刺距离。 然后分别在D1到DN的距离处执行P1到PN符号穿孔。 为了更均匀地分配符号穿孔，可以将距离D1至DN中的每一个选择为大于或等于定义为最小穿孔距离Dmin，定义为D min = [S / P]，其中[]表示楼层操作员。 在每个计算距离处的符号穿孔可以一起执行或者以其他距离的符号穿孔分布。 在替代方案中，累加器被配置为在其增加到值之后包围，每个增量大小为P i。 每当累加器递增i时，符号索引增加1，直到符号索引超过值S i。 进展有利地开始穿刺。 每次蓄能器包裹时，都会进行另一次穿刺。 作为另一种选择，穿孔可以与符号重复组合。

公开(公告)号：WO02095960A3

公开(公告)日：2003-10-02

申请号：PCT/US0221647

申请日：2002-02-06

Applicant: QUALCOMM INC

Inventor： PANKAJ RAJESH ,  LUNDBY STEIN ,  YAFUSO BYRON

IPC: H04L1/00 ,  H04B1/00 ,  H04B1/7103 ,  H04B7/005 ,  H04B7/26 ,  H04W52/00 ,  H04W52/54 ,  H03M13/35

CPC classification number: H04B1/7103 ,  H04B2201/709709 ,  H04W52/54

Abstract: Techniques to reduce transmit power required for transmission of messages from an access terminal to reduce interference to transmissions from other access terminals. In one aspect, messages to be transmitted are defined and/or coded such that they may be detected at different received signal qualities. The codewords may be defined having different distances to their nearest codewords. In another aspect, messages to be transmitted are assigned to different points in a signal constellation, with the points being located such that they may be received at different signal qualities. Codewords that may be received at a lower signal quality may be assigned to messages more likely to be transmitted at higher transmit power levels (e.g., when the access terminal is located further away) or to more frequently transmitted messages.

Abstract translation: 降低从接入终端发送消息所需的发射功率以减少对来自其他接入终端的传输的干扰的技术。 在一个方面，要发送的消息被定义和/或编码，使得它们可以以不同的接收信号质量被检测。 可以定义码字与其最近的码字的距离不同。 在另一方面，要发送的消息被分配给信号星座中的不同点，其​​中所述点被定位成使得它们可以以不同的信号质量被接收。 可以以较低信号质量接收的码流可以被分配给更可能在较高发射功率电平（例如当接入终端位于较远距离处）时发送的消息或更频繁地发送的消息。