Downlink channel handling within a spread spectrum communications system
US5956368A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 29, 1997 |
| Grant date | Sep 21, 1999 |
| Priority date | — |
| Expiry date | Aug 29, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B7/2628
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
With respect to a direct sequence, code division multiple access spread spectrum transmitter, symbol information relating to dedicated/common channels (such as the traffic or control channels) is spread to generate a plurality of corresponding dedicated/common channel intermediate signals. These intermediate signals are then summed to generate an output signal that is scrambled by a selected scrambling code. Symbol information relating to acquisition-related channels (such as synchronization information or the pilot or long code group code channels) is also spread to generate a plurality of corresponding acquisition-related intermediate signals. These acquisition-related intermediate signals are then selectively added to the scrambled output signal producing a downlink signal for multi-channel transmission over a communications medium sharing one transmission communications frequency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.