Multi-code compressed mode DS-CDMA systems and methods
US5896368A · kind A · utility
97Cited by
15References
41Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 23, 1996 |
| Grant date | Apr 20, 1999 |
| Priority date | — |
| Expiry date | Apr 23, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W52/44
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Introduction of discontinuous transmission in CDMA communications techniques is achieved by selectively using additional spreading codes for spreading a frame of data. By dividing a frame into two or more portions and spreading each portion with a different spreading code, the frame can be transmitted in a compressed mode wherein the information is transmitted during a portion of the frame period, leaving an idle part of the frame in which to perform other functions, such as evaluation of other frequencies for use in handover between frequencies.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.