Communication receiver with signal processing for beam forming and antenna diversity
US7298715B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 14, 2001 |
| Grant date | Nov 20, 2007 |
| Priority date | — |
| Expiry date | Sep 25, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B7/086
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
The present invention provides a technique to reduce the number of RF components by using digital signal processing functions in wireless receivers having two or more antennas, which results in the reduction of system cost. The reduction occurs by using a multiplexer or switch to sample the signal received by each of the antennas. The sampling rate of the multiplexer or switch is greater than the Nyquist required sampling rate (Fs) of the received signal bandwidth. The sampled signal is a multiplexed single analog (RF) signal, which only requires one chain of receiver components. A signal processor then is able to demultiplex the received signal at a lower frequency and can perform several functions including antenna diversity and beam forming utilizing digital signals at IF or baseband frequencies.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.