System and method for collision rate reduction in MIMO narrowband power line communications
US9258829B1 · kind B1 · utility
28Cited by
3References
18Claims
0Family size
Assignee
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Key dates
| Filing date | Dec 24, 2014 |
| Grant date | Feb 9, 2016 |
| Priority date | — |
| Expiry date | Dec 24, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L1/188
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A PLC network system and method operative with OFDM for generating MIMO frames with suitable preamble portions configured to provide backward compatibility with legacy PLC devices and facilitate different receiver tasks such as frame detection and symbol timing, channel estimation and automatic gain control (AGC), including robust preamble detection in the presence of impulsive noise and frequency-selective channels of the PLC network. To reduce collisions in a network, a MIMO PLC transmitter device may selectively perturb legacy FCH data so as to ensure a maximum back-off time by a legacy PLC receiver.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.