Methods, devices and systems for modifying a power profile of a frequency division mulitplexed signals

A device, comprising:

• a data encoder circuit configured to encode data values into multi-bit data symbols;
• a frequency encoder circuit configured to receive data symbols in parallel and encode each data symbol into frequency domain values, the frequency domain values for each data symbol being transmitted over a different frequency range;
• an evaluation circuit configured to generate modification pulse values in response to the data symbols;
• a transmit power adjust circuit configured to
• combine samples of multiple different frequency domain values into a sequence of initial output values in time, and
• decrease the initial output values according to the modification pulse values to generate modified output values;
• and
• wireless circuits configured to transmit a wireless signal compatible with at least one IEEE 802.12 wireless standard according to the modified output values;
• wherein
• the modification pulse has a non-linear slope that decreases as it approaches a modification pulse maximum and increases as it departs from the modification pulse maximum.

A system, comprising:

• a frequency multiplexing section that includes
• a frequency modulating circuit configured to frequency modulate each of a plurality of data symbols over different frequency ranges to generate a plurality of modulated signals;
• a radio circuit configured to transmit the modulated signals in parallel as an output signal that is compatible with at least one IEEE 802.11 wireless standard;
• a power modification circuit configured to reduce a transmit power of the output signal according to a modification pulse;
• and
• an antenna system configured to at least transmit the output signal;
• wherein
• the modification pulse has a non-linear slope that decreases as it approaches a modification pulse maximum and increases as it departs from the modification pulse maximum.