Systems and methods for wireless communication in sub gigahertz bands
US8625690B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 2, 2012 |
| Grant date | Jan 7, 2014 |
| Priority date | — |
| Expiry date | Mar 3, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/26132
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Systems, methods, and devices for wireless communication. In one aspect, an apparatus for wireless communication is provided. The apparatus includes a receiver configured to receive a wireless signal comprising a packet. At least a portion of the wireless signal is configured to be received over a bandwidth lower than or equal to 1.25 MHz. The packet is formed from at least one orthogonal frequency-division multiplexing (OFDM) symbol comprising thirty-two tones. The thirty-two tones correspond to frequency subcarriers within the bandwidth. The thirty-two tones of the at least one OFDM symbol are allocated as: twenty-four data tones, two pilot tones, five guard tones, and one direct current (DC) tone. The apparatus includes a processor configured to evaluate the wireless signal. The processor includes a transform module configured to convert the at least one OFDM symbol into a frequency domain signal using a thirty-two point mode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.