Large delay cyclic delay diversity (CDD) precoder for open loop multiple-input multiple-output (MIMO)
US9166849B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 1, 2011 |
| Grant date | Oct 20, 2015 |
| Priority date | — |
| Expiry date | Oct 1, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W72/23
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A physical channel processor on a wireless device and method for precoding for spatial multiplexing in an open-loop multiple-input multiple-output (MIMO) mobile communication system is disclosed. The method comprises the operation of receiving an input vector block from a layer mapper. The input vector block includes user equipment-specific reference signals (UE-RSs) or data in a physical downlink shared channel (PDSCH). The operation of generating a large delay cyclic delay diversity (CDD) vector block from the input vector block using a precoder configured for large delay CDD on an antenna port follows. The data can be resource element mapped with UE-RSs or channel-state information reference signals (CSI-RSs) in a physical resource block (PRB).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.