Method and apparatus for pilot multiplexing in a wireless communication system
US8130857B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 18, 2007 |
| Grant date | Mar 6, 2012 |
| Priority date | — |
| Expiry date | Nov 14, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L5/0051
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Techniques for multiplexing pilots in a wireless transmission are described. In one aspect, a transmitter station generates multiple pilot sequences for multiple transmit antennas, with each pilot sequence comprising pilot symbols sent in the time domain on a different set of subcarriers. The transmitter station further generates multiple pilot transmissions for the transmit antennas based on the pilot sequences. In another aspect, a transmitter station generates multiple pilot sequences for multiple transmit antennas based on frequency-domain code division multiplexing (FD-CDM) of a Chu sequence defined by a transmitter-specific value. The transmitter station further generates multiple pilot transmissions for the transmit antennas based on the pilot sequences. In yet another aspect, a transmitter station generates multiple pilot transmissions for multiple transmit antennas based on a first multiplexing scheme and generates multiple data transmissions based on a second multiplexing scheme that is different from the first multiplexing scheme.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.