Power line communication networks and methods employing multiple widebands
View Patent ↗Systems and methods for communicating over a power line are configured to substantially simultaneously communicate over a plurality of wideband frequency ranges. Signals may be communicated two or from a communication node at two different frequencies simultaneously. These signals may be exchanged with different nodes and/or include independent data. In some embodiments, some of the wideband frequency ranges are above 30 MHz.
1. A communication network comprising:
three communication nodes, each including a first analog filter, each configured to communicate simultaneously and independently over a power line with the other two communication nodes using a plurality of widebands, wherein a high band of the plurality of widebands has a minimum frequency greater than 30 MHz, wherein a low band of the plurality of widebands has a maximum frequency of about 30 MHz, wherein the first analog filter of each communication node comprises a low pass filter, and wherein each of the three communication nodes is configured to transmit signals in the low band with a low band transmission power spectral density and configured to transmit signals in the high band with a high band transmission power spectral density and wherein the low band transmission power spectral density is approximately one thousand times greater than the high band transmission power spectral density.
2. A communication network comprising:
three communication nodes, each including a first analog filter, each configured to communicate simultaneously and independently over a power line with the other two communication nodes using a plurality of widebands wherein a high band of the plurality of widebands has a minimum frequency greater than 30 MHz, wherein the first analog filter of each communication node comprises a first analog high pass filter and each communication node comprises:
a high band receiver including the first analog high pass filter, a first demodulator, and a first ADC coupled between the first analog high pass filter and the first demodulator;
a low band receiver including a first analog low pass filter configured to exclude frequencies above about 30 MHz, a second demodulator, and a second ADC coupled between the first analog low pass filter and the second demodulator; and
a transmitter including a second analog filter, a first modulator, and a first DAC coupled between the second analog filter and the first modulator.
3. The communication network of claim 2 further comprising a second modulator coupled to the first DAC.
4. The communication network of claim 2 wherein the second analog filter of the transmitter comprises a second analog high pass filter.
5. The communication network of claim 2 wherein the second analog filter of the transmitter comprises a second analog low pass filter configured to exclude frequencies above about 30 MHz.
6. A communication network comprising:
three communication nodes, each including a first analog filter, each configured to communicate simultaneously and independently over a power line with the other two communication nodes using a plurality of widebands wherein a high band of the plurality of widebands has a minimum frequency greater than 30 MHz, wherein the first analog filter comprises a first analog high pass filter and each communication node comprises:
a high band transmitter including the first analog high pass filter, a first modulator, and a first DAC coupled between the first analog high pass filter and the first modulator;
a low band transmitter including a first analog low pass filter configured to exclude frequencies above about 30 MHz, a second modulator, and a second DAC coupled between the first analog low pass filter and the second modulator; and
a receiver including a second analog filter, a first demodulator, and a first ADC coupled between the second analog filter and the first demodulator.