MIMO system with multiple spatial multiplexing modes
US8483188B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 5, 2008 |
| Grant date | Jul 9, 2013 |
| Priority date | — |
| Expiry date | Nov 15, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W72/046
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A MIMO system supports multiple spatial multiplexing modes for improved performance and greater flexibility. These modes may include (1) a single-user steered mode that transmits multiple data streams on orthogonal spatial channels to a single receiver, (2) a single-user non-steered mode that transmits multiple data streams from multiple antennas to a single receiver without spatial processing at a transmitter, (3) a multi-user steered mode that transmits multiple data streams simultaneously to multiple receivers with spatial processing at a transmitter, and (4) a multi-user non-steered mode that transmits multiple data streams from multiple antennas (co-located or non co-located) without spatial processing at the transmitter(s) to receiver(s) having multiple antennas. For each set of user terminal(s) selected for data transmission on the downlink and/or uplink, a spatial multiplexing mode is selected for the user terminal set from among the multiple spatial multiplexing modes supported by the system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.