Receiver and receiving method in multi-carrier spread-spectrum communications
US6563859B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 15, 1999 |
| Grant date | May 13, 2003 |
| Priority date | — |
| Expiry date | Nov 15, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B1/692
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A multi-carrier signal received by an antenna is converted into a signal of an IF band by an RX, and converted into an I signal and a Q signal by an quadrature detector. The I signal and the Q signal as multi-carrier signals are converted into digital signals by an A/D converter, and input to complex filters. The complex filters extract a complex signal having a specified carrier. Then, complex filters shift the center frequency of the extracted complex signal into 0 Hz. The obtained base band signal is input to a finger, and despread and demodulated. The despread and demodulated signal is RAKE synthesized by a synthesis unit, and transmitted to a signal discrimination unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.