Transmitter, receiver, communication system, and communication method employing spread spectrum communication technique
US5859875A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 28, 1997 |
| Grant date | Jan 12, 1999 |
| Priority date | — |
| Expiry date | Jan 28, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L1/08
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Transmission mode selection is enabled, so communication reliability, transmission speed, and equipment utilization efficiency are all high. A first transmission system whereby spectrum spreading is accomplished with a spread code 1 and data is transmitted, and a second transmission system whereby data is transmitted with a spread code 2, are provided. In high-reliability transmission mode, identical data from a data buffer is transmitted through both the first and second transmission systems to achieve space diversity. In high-speed mode, data divided by a data division circuit is transmitted simultaneously through the first and second transmission systems, making possible efficient data transfer. Control information insertion circuits append transmission mode data to the transmitted data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.