Method for transmitting data by means of a carrier current
AssigneeSpidcom Technologies
InventorsJoseph Fruhauf, Alexandre Dubois
Life of this patent
Estimating the term…
Abstract
The invention relates to a method for transmitting data over a carrier current using a frequency band. According to said method: the frequency band is divided into N sub-bands, N being a whole number higher than, or equal to, two; an OFDM (Orthogonal Frequency Division Multiplexing) technique is carried out on each of said sub-bands; and calculations are carried out based on each sub-band. The inventive method is characterised in that the calculations based on each sub-band are independent from the calculations based on the other sub-bands, and said sub-bands are dynamically activated and allocated. The invention also relates to modulation and demodulation devices for carrying out said method.
Claims8
A method for transmitting data on a carrier current using a frequency band, the method consisting in:
- subdividing said frequency band into N sub-bands, where N is an integer greater than or equal to two;
- implementing an Orthogonal Frequency Division Multiplexing (OFDM) technique on each of said sub-bands, said sub-bands being activated and allocated in dynamic manner;
- and
- performing calculation operations on each of the sub-bands;
- said method being characterized in that:
- the calculations performed on each of the sub-bands are independent of the calculations performed on the other sub-bands;
- and
- said method further consists in using a bank of filters suitable for subdividing said frequency band into N sub-bands.
Modulation and demodulation equipment for implementing the method according to any preceding claim, comprising filtering means, fast Fourier transform (FFT) calculation means, analog-to-digital converter (ADC) means, amplifier means, and means for activating and allocating the sub-bands.
Dependencies are inferred from the claim text.