Method of switching transmission modes in IEEE 802.11n MIMO communication systems
US7620067B2 · kind B2 · utility
51Cited by
4References
35Claims
0Family size
Assignee
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Key dates
| Filing date | Dec 22, 2005 |
| Grant date | Nov 17, 2009 |
| Priority date | — |
| Expiry date | Sep 17, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L1/0668
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method and system is provided that selects transmission modes between spatial multiplexing, delay diversity and space-time coding in 802.11n systems. As such, eigen-value computation for mode selection is not required. This provides efficiency, in particular for basic receiver structure where a linear MMSE or ZF MIMO detector is applied. Further, mode selection using a simple metric provides accurate mode selection. In addition by switching between different transmission modes, a link adaptation algorithm according to the present invention provides improved system performance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.