Method and apparatus for CDMA demodulation
US7336640B2 · kind B2 · utility
20Cited by
2References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 19, 2003 |
| Grant date | Feb 26, 2008 |
| Priority date | — |
| Expiry date | Sep 10, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B2201/70707
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A CDMA receiver (500) minimizes the use of hardware by taking advantage of the fact that Walsh sequences of a predetermined length (e.g., 16) are comprised of inverted and non-inverted versions of smaller length (e.g., 4) sequences. The receiver (500) performs the necessary uncovering operations for example of a Walsh sequence of length 16 by performing uncovering operations using smaller length Walsh sequences such as of length 4 and then performing subsequent summing operations with inverted and non-inverted versions of the results of such uncovering operations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.