Encoders for Block-Circulant LDPC Codes
- Detailed Technology Description
- None
- Supplementary Information
- Patent Number: US7499490B2
Application Number: US2005166041A
Inventor: Divsalar, Dariush | Abbasfar, Aliazam | Jones, Christopher R. | Dolinar, Samuel J. | Thorpe, Jeremy C. | Andrews, Kenneth S. | Yao, Kung
Priority Date: 24 Jun 2005
Priority Number: US7499490B2
Application Date: 24 Jun 2005
Publication Date: 3 Mar 2009
IPC Current: H04B000166
US Class: 375240 | 341051 | 341074 | 375254 | 375271 | 375302 | 714758 | 714800
Assignee Applicant: California Institute of Technology,Pasadena | The Regents of the University of California
Title: Encoders for block-circulant LDPC codes
Usefulness: Encoders for block-circulant LDPC codes
Summary: For block circulant LDPC used in communication system such as cellular telephones, hard disk drives, magnetic tape recorders and computer modem.
Novelty: Encoder for e.g. cellular telephones, has accumulator that accumulates permuted final intermediate symbols to form specific set of output symbols
- Industry
- ICT/Telecom
- Sub Category
- Telecommunication
- Application No.
- 7499490
- Others
-
Tech ID/UC Case
22320/2009-131-0
Related Cases
2009-131-0
- *Abstract
-
- Methods and apparatus to encode message input symbols in accordance with an accumulate-repeat-accumulate code with repetition three or four are disclosed. Block circulant matrices are used. A first method and apparatus make use of the block-circulant structure of the parity check matrix. A second method and apparatus use block-circulant generator matrices.
- *IP Issue Date
- Mar 3, 2009
- *Principal Investigator
-
Name: Aliazam Abbasfar
Department:
Name: Kenneth Andrews
Department:
Name: Dariush Divsalar
Department:
Name: Samuel Dolinar
Department:
Name: Christopher Jones
Department:
Name: Jermy Thorpe
Department:
Name: Kung Yao
Department:
- Country/Region
- USA
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