公开(公告)号：HK1090146A1

公开(公告)日：2006-12-15

申请号：HK06110685

申请日：2006-09-26

Applicant: QUALCOMM INC

Inventor： RICHARDSON TOM ,  NOVICHKOV VLADIMIR ,  JIN HUI

IPC: G06F20100101 ,  H03M20100101 ,  H03M13/00 ,  H04L1/00

Abstract: Methods and apparatus for scaling soft values as part of an error correction decoding process are described. Accurate decoding depends on use of the appropriate scale factor. Selection and use of the scale factor to scale soft values is designed to improve and/or optimize decoder performance without the need for prior knowledge of the correct scale factor or the actual channel conditions at the time the signal from which the soft values were obtained was transmitted through a communications channel. The techniques of the present invention assume that the soft values to be processed were transmitted through a communications channel having a quality that can be accurately described by a channel quality value. A scale factor is determined from the distribution of soft values to be scaled and an assumption that the channel through which they were transmitted was of the quality corresponding to a preselected channel quality value.

公开(公告)号：CA2672074A1

公开(公告)日：2006-09-21

申请号：CA2672074

申请日：2005-07-20

Applicant: QUALCOMM INC

Inventor： NOVICHKOV VLADIMIR ,  JIN HUI ,  RICHARDSON TOM

IPC: H03M13/13

Abstract: A flexible and relatively hardware efficient LDPC decoder (900) is described. The decoder cai be implemented with a level of parallelism which is less than the full parallelism of the code structure used to control the decoding process (901). Each command of a relatively simple control code used to describe the code structure can be stored and executed multiple times to complete the decoding of a codeword. Different codeword lengths (912) are supported using the same set of control code instructions but with the code being implemented a different number of times depending on the codeword length. The decoder can switch between decoding codewords of different lengths, without the need to change the stored code description information, by simply changing a code lifting factor (908) that is indicative of codeword length and is used to control th e decoding process. When decoding codewords shorter than the maximum supported codeword length some block storage locations may go unused (916).

公开(公告)号：WO2007075773A3

公开(公告)日：2008-04-17

申请号：PCT/US2006048584

申请日：2006-12-20

Applicant: QUALCOMM INC ,  RICHARDSON TOM ,  JIN HUI ,  LI JUNYI ,  PARIZHSKY VLADIMIR

Inventor： RICHARDSON TOM ,  JIN HUI ,  LI JUNYI ,  PARIZHSKY VLADIMIR

IPC: H04L27/26 ,  H04W28/18 ,  H04W52/08 ,  H04W52/14

CPC classification number: H04L27/2602 ,  H04L1/0004 ,  H04L27/2627 ,  H04W28/18 ,  H04W52/08 ,  H04W52/146 ,  H04W72/0413

Abstract: In a first mode of dedicated control channel (DCCH) operation, a wireless terminal is allocated more segments than in a second mode. The wireless terminal uses different information bit to modulation symbol mapping in the different modes. On a per DCCH segment basis, the same number of modulation symbols are communicatd in either mode but more information bits are conveyed in the second mode. Information bits for a DCCH segment are partitioned into two subsets. The two subsets are used to generate another set, each of the two subsets and the another set are input to the same mapping function to generate three equal size sets of modulation symbols which are transmitted via the DCCH segment. Uplink tone hopping is used such that one of the equal size sets of modulation symbols for the DCCH segment uses the same tone but a different set uses a different tone.

Abstract translation: 在专用控制信道（DCCH）操作的第一模式中，与第二模式相比，无线终端被分配更多的分组。 无线终端在不同模式下使用不同的信息比特来调制符号映射。 在每个DCCH段的基础上，相同数量的调制符号以任一模式通信，但在第二模式中传送更多的信息位。 DCCH段的信息位被划分成两个子集。 这两个子集用于生成另一集合，两个子集中的每一个和另一集合被输入到相同的映射函数，以生成经由DCCH段发送的三个相等大小的调制符号组。 使用上行链路跳频使得用于DCCH段的相等大小的调制符号组之一使用相同的音调，但是不同的组使用不同的音调。

公开(公告)号：WO2007121333A2

公开(公告)日：2007-10-25

申请号：PCT/US2007066583

申请日：2007-04-13

Applicant: QUALCOMM INC ,  LEONIDOV ALEXANDER ,  JIN HUI ,  LAROIA RAJIV ,  LI JUNYI ,  SRINIVASAN MURARI

Inventor： LEONIDOV ALEXANDER ,  JIN HUI ,  LAROIA RAJIV ,  LI JUNYI ,  SRINIVASAN MURARI

IPC: H04L27/26

CPC classification number: H04L27/2608

Abstract: Improved ways of communicating assignment signals using flash signaling are described, e.g., for wireless terminals with low SNR, that are more robust against large variation of channel gains due to e.g., frequency selective fading and fast fading in time. Coding and modulation methods and apparatus that have excellent properties against symbol erasures are described. The use of flash signaling provides an improved assignment channel having strong performance on the fading channel without compromising the performance on the AWGN channel. In one exemplary embodiment, the coding and modulation method can tolerate up to 5 erased symbols out of 8 transmitted symbols. One embodiment reduces or minimizes the sector interference on the flash assignment by improving or maximizing orthogonality between different sectors. In addition, one embodiment describes improved ways of swapping flash assignment tone-symbols in the presence other high priority signals, like sector pilots and sector null pilots.

Abstract translation: 例如，对于具有低SNR的无线终端，使用闪信号进行传送分配信号的改进方式对于由于例如频率选择性衰落和时间上的快速衰落而导致的信道增益的大变化更加鲁棒。 描述了具有针对符号擦除的优异特性的编码和调制方法和装置。 闪光信令的使用提供了在衰落信道上具有强性能的改进的分配信道，而不损害AWGN信道上的性能。 在一个示例性实施例中，编码和调制方法可以容忍8个发送的符号中多达5个擦除的符号。 一个实施例通过改善或最大化不同扇区之间的正交性来减少或最小化闪存分配上的扇区干扰。 此外，一个实施例描述了在存在其他高优先级信号（如扇区导频和扇区空导频）的情况下交换闪存分配音调符号的改进方式。

公开(公告)号：WO2008009014A3

公开(公告)日：2008-04-10

申请号：PCT/US2007073554

申请日：2007-07-14

Applicant: QUALCOMM INC ,  JIN HUI ,  RICHARDSON TOM ,  LAROIA RAJIV ,  LI JUNYI

Inventor： JIN HUI ,  RICHARDSON TOM ,  LAROIA RAJIV ,  LI JUNYI

IPC: H04W72/04

CPC classification number: H04W72/042 ,  H04W8/26

Abstract: Methods and apparatus related to assignments in a wireless communications system are described. A mobile is assigned an identifier and a mask value, e.g., as part of a state transition message. The mobile uses the assigned identifier and/or the assigned mask value in determining whether assignments included in assignment messages, e.g., traffic channel assignment messages, are directed to the wireless terminal. Predetermined associations between assignment slots, assigned segments, and/or mask values are utilized to limit control signaling overhead. Different groups of segments are available for assignment to different wireless terminals as a function of mask values. Different types of assignment messages use different amounts of information bits to convey the assignment. Some types of assignments use a wireless terminal identifier, while other types of assignments use a wireless terminal identifier and a mask identifier. The mask identifier, e.g., a single bit, allows for selection between a subset of the potential masks used in the system.

Abstract translation: 描述了与无线通信系统中的分配有关的方法和设备。 移动台被分配一个标识符和一个掩码值，例如作为状态转换消息的一部分。 移动台使用分配的标识符和/或分配的掩码值来确定包括在分配消息（例如业务信道分配消息）中的分配是否指向无线终端。 利用分配时隙，分配的分段和/或掩码值之间的预定关联来限制控制信令开销。 作为掩码值的函数，可以将不同的无线分组分组分配给不同的无线终端。 不同类型的分配消息使用不同数量的信息位来传达分配。 某些类型的分配使用无线终端标识符，而其他类型的分配使用无线终端标识符和掩码标识符。 掩码标识符（例如单个位）允许在系统中使用的潜在掩码的子集之间进行选择。

公开(公告)号：EP1614241A4

公开(公告)日：2011-05-11

申请号：EP04758784

申请日：2004-04-02

Applicant: QUALCOMM INC

Inventor： JIN HUI ,  RICHARDSON TOM ,  NOVICHKOV VLADIMIR

IPC: H03M13/00 ,  H03M13/27 ,  H03M13/29 ,  H03M13/31 ,  H04J20060101 ,  H04L1/00 ,  H04L27/00 ,  H04L29/02

CPC classification number: H03M13/116 ,  H03M13/2757 ,  H03M13/2957 ,  H03M13/6331

公开(公告)号：EP1787397A4

公开(公告)日：2010-07-28

申请号：EP05775250

申请日：2005-07-20

Applicant: QUALCOMM INC

Inventor： RICHARDSON TOM ,  JIN HUI

IPC: H03M13/00

CPC classification number: H03M13/6508 ,  H03M13/116 ,  H03M13/118 ,  H03M13/611

Abstract: A flexible and relatively hardware efficient LDPC encoder is described. The encoder can be implemented with a level of parallelism which is less than the full parallelism of the code structure used to control the encoding process. Each command of a relatively simple microcode used to describe the code structure can be stored and executed multiple times to complete the encoding of a codeword. Different codeword lengths can be supported using the same set of microcode instructions but with the code being implemented a different number of times depending on the lifting factor selected to be used. The LDPC encoder can switch between encoding codewords of different lengths, without the need to change the stored code description information, by simply changing a code lifting factor used to control the encoding processes. When coding codewords shorter than the maximum supported codeword length some block storage locations and/or registers may go unused.

公开(公告)号：EP1597667A4

公开(公告)日：2009-01-14

申请号：EP03816195

申请日：2003-08-07

Applicant: QUALCOMM INC

Inventor： RICHARDSON TOM ,  NOVICHKOV VLADIMIR ,  JIN HUI

IPC: H03M13/00 ,  H04L1/00 ,  G06F7/60 ,  G06F7/02 ,  G06F11/00 ,  G06F17/10

CPC classification number: H04L1/005 ,  H03M13/00 ,  H03M13/1102 ,  H03M13/296 ,  H03M13/3707 ,  H03M13/6325 ,  H03M13/658

Abstract: Methods and apparatus for scaling soft values (214) as part of an error correction decoding process are described. Accurate decoding depends on use of the appropriate scale factor. Selection and use of the scale factor to scale soft values is designed to improve and/or optimize decoder performance without the need for prior knowledge of the correct scale factor or the actual channel conditions at the time the signal from which the soft values were obtained was transmitted through a communications channel. The techniques of the present invention assumes that the soft values to be processed were transmitted through a communications channel having a quality that can be accurately described by a channel quality value (200). A scale factor is determined from the distribution of soft value (208) to be scaled (212) and an assumption that the channel through which they were transmitted was of the quality corresponding to a pre-selected channel quality value (210).

公开(公告)号：EP1787396A4

公开(公告)日：2010-06-30

申请号：EP05773698

申请日：2005-07-20

Applicant: QUALCOMM INC

Inventor： JIN HUI ,  RICHARDSON TOM ,  NOVICHKOV VLADIMIR

IPC: H03M13/00

CPC classification number: H04L1/0057 ,  H03M13/1137 ,  H03M13/116 ,  H03M13/6513 ,  H03M13/6516 ,  H04L1/0045