Radio receiver
US7254160B2 · kind B2 · utility
36Cited by
1References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 12, 2003 |
| Grant date | Aug 7, 2007 |
| Priority date | — |
| Expiry date | Feb 11, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B2201/70707
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A radio receiver handles a transmitted Walsh sequence having a code length of “m” as a two-dimensional array of “a” rows and “b” columns, and performs a fast Hadamard transform process having a code length of “a” in the row direction. The absolute values of the results are added in the column direction, and a Walsh number having the maximum receiving power is selected to determine a Walsh sequence having a code length of “a.” Then, only the identified column is extracted, and a fast Hadamard transform process having a code length of “b” is applied in the column direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.