MIMO Hybrid-ARQ using basis hopping
US7698616B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 2, 2008 |
| Grant date | Apr 13, 2010 |
| Priority date | — |
| Expiry date | Oct 2, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L1/1816
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A Hybrid Automatic Retransmission Request (H-ARQ) technique is provided for Multi-Input Multi-Output (MIMO) systems. The technique changes the basis (V) upon retransmission, which helps reduce the error probability upon retransmission. This basis hopping technique provides for improved performance gain without significant increase in design complexity. In one embodiment, communication device (100) includes a receiver section (114) for receiving an acknowledgment (ACK) or a non-acknowledgment (NACK) signal in response to information transmitted by the transmitter section of the communication device. If a NACK is received, a new basis is selected from a set of basis stored in a basis set unit (110). The new basis that is selected is then used by a linear transformation unit (106) in the retransmission of the information.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.