公开(公告)号：AU2010200777A1

公开(公告)日：2010-03-25

申请号：AU2010200777

申请日：2010-03-02

Applicant: QUALCOMM INC

Inventor： RICHARDSON TOM ,  NOVICHKOV VLADIMIR ,  JIN HUI

IPC: H03M13/00

Abstract: A flexible and relatively hardware efficient LDPC decoder is described. The decoder can be implemented with a level of parallelism which is less than the full parallelism of the code structure used to control the decoding process. 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 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 that is indicative of codeword length and is used to control the decoding process.; When decoding codewords shorter than the maximum supported codeword length some block storage locations may go unused.

公开(公告)号：AU2010200776A1

公开(公告)日：2010-03-25

申请号：AU2010200776

申请日：2010-03-02

Applicant: QUALCOMM INC

Inventor： RICHARDSON TOM ,  NOVICHKOV VLADIMIR ,  JIN HUI

IPC: H03M13/00

Abstract: A flexible and relatively hardware efficient LDPC decoder is described. The decoder can be implemented with a level of parallelism which is less than the full parallelism of the code structure used to control the decoding process. 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 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 that is indicative of codeword length and is used to control the decoding process.; When decoding codewords shorter than the maximum supported codeword length some block storage locations may go unused.

公开(公告)号：HK1131474A1

公开(公告)日：2010-01-22

申请号：HK09111354

申请日：2009-12-03

Applicant: QUALCOMM INC

Inventor： RICHARDSON TOM ,  JIN HUI ,  NOVICHKOV VLADIMIR

IPC: H03M20060101

Abstract: A flexible and relatively hardware efficient LDPC decoder is described. The decoder can be implemented with a level of parallelism which is less than the full parallelism of the code structure used to control the decoding process. 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 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 that is indicative of codeword length and is used to control the decoding process.; When decoding codewords shorter than the maximum supported codeword length some block storage locations may go unused.

公开(公告)号：AU2008260226A1

公开(公告)日：2008-12-11

申请号：AU2008260226

申请日：2008-05-27

Applicant: QUALCOMM INC

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

IPC: H04L5/02 ,  H04B7/005 ,  H04B7/06 ,  H04B14/02 ,  H04L1/00 ,  H04L25/02 ,  H04L25/49 ,  H04L27/26

Abstract: Methods and apparatus for improving the utilization of air link resources in a wireless communications system, e.g., an OFDM MIMO system, including a base station with multiple transmit antennas are described. Superposition signaling in the downlink is employed. The superimposed signal includes a first transform result signal and a second lower power signal. The first transform result signal is generated from a first signal, which uses position modulation, e.g., including null components and high power non-null components. Different components of the first transform result signal are directed to different transmit antennas. The first transform result signal communicates information to a first wireless terminal, e.g., a weak receiver. The non-null received elements of the first transform result signal are utilized by a second wireless terminal, e.g., a superior receiver, as pilots to determine a channel estimate. The second wireless terminal uses the determined channel estimate to demodulate received second signals.

公开(公告)号：CA2672074C

公开(公告)日：2013-10-08

申请号：CA2672074

申请日：2005-07-20

Applicant: QUALCOMM INC

Inventor： RICHARDSON TOM ,  JIN HUI ,  NOVICHKOV VLADIMIR

IPC: H03M13/13 ,  H04W88/02

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 the 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：AU2010200854B2

公开(公告)日：2012-05-17

申请号：AU2010200854

申请日：2010-03-05

Applicant: QUALCOMM INC

Inventor： RICHARDSON TOM ,  JIN HUI

IPC: H03M13/00

Abstract: A flexible and relatively hardware efficient LDPC encoder is described (300). The encoder cm be implemented with a level of parallelism which is less than the full parallelism of the code structure 5 used to control the encoding process (301). 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 (354). 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 (3 10). The LDPC encoder can switch between encoding codewords of 10 different lengths, without the need to change the stored code description information, by simply changing a code lifting factor used to control the encoding process (3 10). When coding codewords shorter than the maximum supported codeword length some block storage locations and/or registers may go unused (308). MEMORY MODULE 314 LDPC ENCODER 318 L 39 321 322 301 31; 320 322323 303 IN N BLK 1 'BLK 2' -____-___-___BLK______K_____u__ N ... OUT K X (N x L) 1 BIT MEMORY LOCATIONS (CODEWORD 302 + STORAGE) K X (N x 1) 1 BIT MEMORY LOCATIONS (TEMP STORAGE) 324 memory access signal MEMORY ADDRESS 316 _N LOGIC r_308 Block address 1 32 Memo52 select signal (k) 340 3 306 N30 address control signal 358 N ELEMENT 342 N ELEMENT 344 (a 0.L) CONTROLLABLE VECTOR M N N -- ' ACCUMULATOR x L-. MODULE -i read/ _328 write K signal (op) CODE ce ro signal (r) 326 350 LIFTING CONTROLLABLE BASED 373 STORAGE DEVICE SELECTION 36 block select SELETIONcontrol signal 354 356 310 First selection module second selection control module control signal (r,) signal read/wrife signal 371 (op) nS 374 CONTROL .u loop con P ro0 3481 code lifting factor control signal (SK) Fig. 3

公开(公告)号：AU2010200776B2

公开(公告)日：2011-03-17

申请号：AU2010200776

申请日：2010-03-02

Applicant: QUALCOMM INC

Inventor： RICHARDSON TOM ,  NOVICHKOV VLADIMIR ,  JIN HUI

IPC: H03M13/00

Abstract: A flexible and relatively hardware efficient LDPC decoder is described. The decoder can be implemented with a level of parallelism which is less than the full parallelism of the code structure used to control the decoding process. 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 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 that is indicative of codeword length and is used to control the decoding process.; When decoding codewords shorter than the maximum supported codeword length some block storage locations may go unused.

公开(公告)号：DE602006017706D1

公开(公告)日：2010-12-02

申请号：DE602006017706

申请日：2006-07-08

Applicant: QUALCOMM INC

Inventor： JIN HUI ,  LI JUNYI ,  LAROIA RAJIV

IPC: H04L27/26 ,  H04L25/06

公开(公告)号：AU2005269729B2

公开(公告)日：2010-10-07

申请号：AU2005269729

申请日：2005-07-20

Applicant: QUALCOMM INC

Inventor： JIN HUI ,  RICHARDSON TOM

IPC: H03M13/00

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：DE602006015473D1

公开(公告)日：2010-08-26

申请号：DE602006015473

申请日：2006-07-19

Applicant: QUALCOMM INC

Inventor： LAROIA RAJIV ,  JIN HUI ,  LI JUNYI ,  LANE FRANK A ,  RICHARDSON TOM

IPC: H04B7/26