公开(公告)号：AU748151B2

公开(公告)日：2002-05-30

申请号：AU7228100

申请日：2000-12-14

Applicant: LUCENT TECHNOLOGIES INC

Inventor： KARIMI HAMID REZA ,  KUZMINSKIY ALEXANDR ,  LUSCHI CARLO ,  SANDELL MAGNUS ,  STRAUCH PAUL EDWARD ,  YAN RAN-HONG

IPC: H04B7/26 ,  H04J3/06 ,  H04J99/00 ,  H04W16/28 ,  H04Q7/30 ,  H04L5/22 ,  H04L7/10

Abstract: A time division multiple access cellular radio telecommunications network is disclosed, in which physical channels may be reused in the same cell. Reused channels on the up link are differentiated by a time shift between them. Same cell reuse (SCR) can thus be implemented in a TDMA (GSM) system without assigning different signatures to SDMA users sharing the same physical channel.

公开(公告)号：AU722426B2

公开(公告)日：2000-08-03

申请号：AU1321399

申请日：1999-01-25

Applicant: LUCENT TECHNOLOGIES INC

Inventor： LUSCHI CARLO ,  MUJTABA SYED AON ,  SANDELL MAGNUS ,  STRAUCH PAUL EDWARD ,  BRINK STEPHAN TEN ,  YAN RAN-HONG

IPC: H03M7/30 ,  H03M13/29 ,  H04B14/04 ,  H03M13/00

Abstract: Apparatus and method for iteratively decoding a signal are provided. The apparatus includes a central pool of resources for iteratively decoding signals. The central pool may run a plurality of iterative decoding processes, each process being allocated to a signal processing unit upon request and depending upon resource availability.

公开(公告)号：AU722419B2

公开(公告)日：2000-08-03

申请号：AU2400899

申请日：1999-04-27

Applicant: LUCENT TECHNOLOGIES INC

Inventor： LUSCHI CARLO ,  MUJTABA SYED AON ,  SANDELL MAGNUS ,  STRAUCH PAUL EDWARD ,  YAN RAN-HONG ,  BRINK STEPHAN TEN

IPC: H04L27/01 ,  H04L25/02 ,  H04B1/10 ,  H04B7/005

Abstract: A method of estimating channel impulse response in a signal transmitted over a channel in a communication system is described. The channel estimator obtains a priori knowledge about the transmitted signal, and then uses the transmitted signal and the a priori knowledge to choose an estimate of channel impulse response which minimizes the expected distance between the transmitted signal and a reconstructed signal. The expected distance that is minimized is a cost function, represented by E{∥r-Bh∥2r}. By using soft decision feedback, the invention minimizes erroneous decision feedback which can cause error propagation. The decisions are usually in the form of log likelihood ratios (LLR).

公开(公告)号：GB2344034A

公开(公告)日：2000-05-24

申请号：GB9922345

申请日：1999-09-21

Applicant: LUCENT TECHNOLOGIES INC

Inventor： LUSCHI CARLO ,  SANDELL MAGNUS ,  STRAUCH PAUL EDWARD ,  YAN RAN-HONG

IPC: H03M13/39 ,  H04L1/00 ,  H03M13/00

Abstract: A method of source controlled channel decoding a bit of a received frame comprises: determining inter-frame a priori information based on correlation between corresponding elements U k-l,n and U k,n of successive frames; determining intra-frame a priori information based on correlation between predetermined elements U k,n and U k,l of each frame; determining the a priori information for the bit by combining the inter-frame and intra-frame a priori information. The step of combining the inter-frame and intra-frame a priori information may comprise adding the inter-frame and intra-frame a priori soft values.

公开(公告)号：BR9900021A

公开(公告)日：2000-01-04

申请号：BR9900021

申请日：1999-01-07

Applicant: LUCENT TECHNOLOGIES INC

Inventor： LUSCHI CARLO ,  MUJTABA SYED AON ,  SANDELL MAGNUS ,  STRAUCH PAUL EDWARD ,  BRINK STEPHAN TEN ,  YAN RAN-HONG

IPC: H03M7/30 ,  H03M13/29 ,  H04B14/04 ,  H04L1/22 ,  H03M13/00

Abstract: Apparatus and method for iteratively decoding a signal are provided. The apparatus includes a central pool of resources for iteratively decoding signals. The central pool may run a plurality of iterative decoding processes, each process being allocated to a signal processing unit upon request and depending upon resource availability.

公开(公告)号：CA2269580A1

公开(公告)日：1999-10-30

申请号：CA2269580

申请日：1999-04-20

Applicant: LUCENT TECHNOLOGIES INC

Inventor： STRAUCH PAUL EDWARD ,  YAN RAN-HONG ,  MUJTABA SYED AON ,  SANDELL MAGNUS ,  TEN BRINK STEPHAN ,  LUSCHI CARLO

IPC: H04L27/01 ,  H04L25/02 ,  H04L1/20 ,  H04Q7/34

Abstract: A method of estimating channel impulse response in a signal transmitted over a channel in a communication system is described. The channel estimator obtains a priori knowledge about the transmitted signal and then use the transmitted signal and the a priori knowledge to choose an estimate of channel impulse response which minimises the expected distance between the transmitted signal and a reconstructed signal. The expected distance that is minimised is a cost function; represented by E{¦¦r-Bh¦¦2r).. By using soft decision feedback, the invention minimises erroneous decision feedback which can cause error propagation. The decision are usually in the form of log likelihood ratios (LLR).

公开(公告)号：AU1321399A

公开(公告)日：1999-09-30

申请号：AU1321399

申请日：1999-01-25

Applicant: LUCENT TECHNOLOGIES INC

Inventor： LUSCHI CARLO ,  YAN RAN-HONG ,  BRINK STEPHAN TEN ,  STRAUCH PAUL EDWARD ,  SANDELL MAGNUS ,  MUJTABA SYED AON

IPC: H03M7/30 ,  H03M13/29 ,  H04B14/04 ,  H03M13/00

Abstract: Apparatus and method for iteratively decoding a signal are provided. The apparatus includes a central pool of resources for iteratively decoding signals. The central pool may run a plurality of iterative decoding processes, each process being allocated to a signal processing unit upon request and depending upon resource availability.

公开(公告)号：CA2254644A1

公开(公告)日：1999-07-27

申请号：CA2254644

申请日：1998-11-30

Applicant: LUCENT TECHNOLOGIES INC

Inventor： MUJTABA SYED AON ,  SANDELL MAGNUS ,  LUSCHI CARLO ,  TEN BRINK STEPHAN ,  YAN RAN-HONG ,  STRAUCH PAUL EDWARD

IPC: H03M7/30 ,  H03M13/29 ,  H04B14/04 ,  H03M7/00 ,  H04Q7/20 ,  H03M1/66

Abstract: Apparatus and method for iteratively decoding a signal arc provided. The apparatus includes a central pool of resources for iteratively decoding sign als. The central pool may run a plurality of iterative decoding processes, each proce ss being allocated to a signal processing unit upon request and depending upon reso urce availability.