System and method for multiple input multiple output wireless transmission
US7536198B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 28, 2003 |
| Grant date | May 19, 2009 |
| Priority date | — |
| Expiry date | Jul 17, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L1/0026
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Systems and methods for MIMO wireless transmission are provided. At the transmitter, a plurality of encoded packets are modulated, and the symbols are divided between several transmit antennas. The transmitter spreads some of the symbols of each packet using a respective subset of an available Walsh code space. A given transmit antenna then transmits part of each packet spread by the respective subset. In some implementations, this achieves the benefits of the PARC system, and at the same time achieves part of the benefits of the STTD system. Advantageously, only a single reverse link control channel is required if adaptive coding and modulation is to be performed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.