Receiving device and channel estimator for use in a CDMA communication system
US6661835B1 · kind B1 · utility
Assignees
Inventors
Key dates
| Filing date | Aug 30, 1999 |
| Grant date | Dec 9, 2003 |
| Priority date | — |
| Expiry date | Aug 30, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B1/7183
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
At a base station 2, a CDMA received signal coming in through an antenna 4 is fed to a radio frequency unit (RFU) or high frequency unit 6. The RFU 6 demodulates a baseband signal BB from a signal RF and delivers the signal BB to an analog-to-digital converter (A/D) 8. The resulting digital signal output from the A/D 8 is input to a hybrid interference canceller (HIC) 12 as a received signal Rx Data 10. The HIC 12 divides users into two groups and assigns one combination of a parallel interference canceller and a serial interference canceller to each group. The HIC 12 cancels interference contained in the received signal Rx Data 10 for thereby estimating symbols particular to a plurality of users.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.