Wireless communications systems and/or methods providing low interference, high privacy and/or cognitive flexibility

A method of forming a spread-spectrum communications alphabet for communicating spread-spectrum information that is characterized by a reduced cyclostationary feature;

• the method comprising:
• forming a plurality of frequency-domain signals comprising substantially overlapping frequency content therebetween;
• each frequency-domain signal of the plurality of frequency domain signals comprising a plurality of amplitude components and a respective plurality of phase components;
• pseudo-randomly assigning a value to each phase component of the plurality of phase components of each one of the plurality of frequency-domain signals;
• transforming the plurality of frequency domain signals to a plurality of time-domain signals;
• orthogonalizing the plurality of time-domain signals so as to generate a respective plurality of time-domain signals that are orthogonal therebetween;
• and
• transmitting and/or receiving spread-spectrum information over a frequency space using the respective plurality of time-domain signals that are orthogonal therebetween so that the spread-spectrum information is characterized by the reduced cyclostationary feature.

A system that is configured to form a spread-spectrum communications alphabet for communicating spread-spectrum information that is characterized by a reduced cyclostationary feature;

• the system comprising a processor that is configured to:
• form a plurality of frequency-domain signals comprising substantially overlapping frequency content therebetween;
• each frequency-domain signal of the plurality of frequency domain signals comprising a plurality of amplitude components and a respective plurality of phase components;
• pseudo-randomly assign a value to each phase component of the plurality of phase components of each one of the plurality of frequency-domain signals;
• transform the plurality of frequency domain signals to a plurality of time-domain signals;
• orthogonalize the plurality of time-domain signals so as to generate a respective plurality of time-domain signals that are orthogonal therebetween;
• and
• transmit and/or receive spread-spectrum information over a frequency space using the respective plurality of time-domain signals that are orthogonal therebetween so that the spread-spectrum information is characterized by the reduced cyclostationary feature.