Transmission schemes for multi-antenna communication systems utilizing multi-carrier modulation
US7095790B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 25, 2003 |
| Grant date | Aug 22, 2006 |
| Priority date | — |
| Expiry date | Aug 9, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B7/0667
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Pilot and data transmission schemes for multi-antenna communication systems utilizing multi-carrier modulation are provided. Subband multiplexing is used to avoid interference resulting from transmitting multiple signals simultaneously from multiple antennas. M usable subbands are initially arranged to form multiple groups of subbands, with each group including a different subset of the usable subbands. Each of T transmit antennas is then assigned one or possibly more subband groups for pilot transmission and typically one subband group for data transmission. Pilot and data may then be transmitted from each antenna on the subbands assigned to that antenna for pilot and data transmission. For each transmit antenna, the transmit power for each assigned subband may be scaled higher such that all of the total transmit power available for the antenna is used for transmission. Pilot and/or data may be transmitted simultaneously from all T antennas on all usable subbands without causing mutual interference.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.