Variable-rate decoder-based wireless receiver

A wireless receiver, comprising:

• a signal encoder configured to encode a plurality of received analog signals into a single encoded analog composite signal, in accordance with an orthogonal coding scheme operated at a first code rate;
• an analog-to-digital converter configured to convert the single encoded analog composite signal into a single encoded digital composite signal containing constituent digital signals;
• and
• a variable high rate decoder configured to:
• convert the single encoded digital composite signal into a high encode rate digital composite signal in accordance with the orthogonal coding scheme operated at a second code rate;
• generate fundamental spectrum and spectral images of the single encoded digital composite signal;
• extract desired positive frequency spectrum and a desired negative frequency spectrum from the fundamental spectrum and the spectral images of the single encoded digital composite signal in accordance with the second code rate;
• change a sampling rate of the desired positive frequency spectrum and the desired negative frequency spectrum;
• perform a shifting operation on the desired positive frequency spectrum and the desired negative frequency spectrum in accordance with a tuning frequency;
• combine the shifted, desired positive frequency spectrum and the shifted, desired negative frequency spectrum;
• and
• decode the high encode rate digital composite signal in accordance with the orthogonal coding scheme operated at the second code rate, to output a plurality of digital signals containing a desired information content of the received plurality of analog signals.