Frequency hopped frequency modulation spread spectrum (FHFMSS) multiple accessing communication systems and methods

An FHFMSS receiver comprised of:

• a receive antenna for receiving (RF) band pass FHFMSS signal;
• an RF front stage unit receiving the output of the receive antenna and further comprised of an RF filter, amplifier and down converter for providing an Intermediate Frequency (IF) band pass FHFMSS signal;
• an IF to complex baseband converter receiving the IF band pass FHFMSS signal for providing an estimated baseband FHFMSS signal;
• a FHFMSS demodulation subsystem inputted with the estimated baseband FHFMSS signal for providing a first despread baseband signal wherein the FHFMSS demodulation subsystem is further comprised of:
• a code generation subsystem for generating a multiplicity M sequences of code vectors;
• a frequency synthesizer for generating a multiplicity M periodic waveforms with frequencies that are distinct integer multiples of a fundamental frequency on the basis of a the multiplicity M sequences of code vectors;
• a frequency modulation (FM) modulator modulating the multiplicity M periodic waveforms for generation of a Frequency Hopped Frequency Modulation (FHFM) despreading waveform;
• and
• a spread spectrum demodulator for despreading the baseband FHFMSS signal on the basis of the FHFM despreading waveform for the generation of a first despread baseband signal;
• a symbol detector comprised of an integrator and a decision device inputted with a first despread baseband signal for providing a first detected information baseband symbols;
• and
• a baseband demodulation subsystem receiving a first detected information baseband symbols for providing a first estimated input data.

A method for the FHFMSS transmission and reception of input data signals, the transmission method comprising:

• implementing, by a computer device, a baseband modulation subsystem for receiving and modulating the input data providing, in general complex valued, information baseband symbols;
• implementing, by the computer device, a first code generation subsystem for generating a multiplicity Mc sequences of code vector wherein Mc is an integer that is greater than or equal to 1;
• implementing, by the computer device, a first frequency synthesizer for generating a multiplicity M periodic sine waveforms with frequencies that are distinct integer multiples of a fundamental frequency on the basis of the multiplicity Mc sequences of code vectors wherein M≧Mc and wherein the frequency synthesizer is for further generation of a first cosine wave with frequency that is a first integer multiple of the fundamental frequency;
• implementing, by the computer device, a first frequency modulation (FM) modulator modulating the multiplicity M periodic sine waveforms with modulation index equal to a first zero of the zeroth order Bessel function for generation of a first Frequency Hopped Frequency Modulation (FHFM) spreading waveform;
• implementing, by the computer device, a first first adder inputted with the first FHFM spreading waveform weighted by a coefficient for generation of a first orthogonal FHFM spreading waveform;
• and
• implementing, by the computer device, a spread spectrum modulator modulating the first orthogonal FHFM spreading waveform by the information baseband symbols for providing a first baseband FHFMSS signal.