Code design method for repeat-zigzag Hadamard codes
US7751491B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 26, 2007 |
| Grant date | Jul 6, 2010 |
| Priority date | — |
| Expiry date | Mar 8, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M13/356
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A method for selecting a signal to noise ratio for a communications code includes obtaining extrinsic information transfer (EXIT) information for a repeat-zigzag Hadamard (RZH) code responsive to a Hadamard order and a signal to noise ratio, determining code parameters for an irregular repeat zigzag Hadamard (IRZH) code for a corresponding code rate in response to the obtained EXIT values, and repeating the step of obtaining the EXIT information for a different signal to noise ratio if the corresponding code rate is other than a selected rate. The corresponding code rate is related to a bit error rate. In a preferred embodiment, the step of obtaining EXIT information includes one of obtaining an EXIT curve for repeat-zigzag Hadamard code by Monte Carlo simulation using serial decoding or obtaining an EXIT function for parallel decoding of the repeat-zigzag Hadamard code by using equations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.