Method and system for ensuring reception of a communications signal

A method for recovering a demodulated baseband signal from a plurality of received redundant spectrums, wherein each of the redundant spectrums contains information that is representative of a modulating baseband signal, the method comprising the steps of:

• (1) down-converting the received redundant spectrums using a control signal to generate a plurality of down-converted redundant spectrums, wherein the control signal comprises a plurality of pulses having apertures established to improve energy transfer to the down-converted redundant spectrums, wherein a frequency of the plurality of pulses is equal to (Freq.sub.input +/-Freq.sub.IF)/n, where Freq.sub.input is a center frequency of the received redundant spectrums, Freq.sub.IF is the center frequency of the down-converted redundant spectrums, and n represents a harmonic or sub-harmonic of Freq.sub.input ;
• (2) isolating at least a subset of the down-converted redundant spectrums, to generate a plurality of isolated redundant spectrums;
• and
• (3) extracting the demodulated baseband signal from at least one of the isolated redundant spectrums, wherein the extracted demodulated baseband signal is representative of the modulating baseband signal.

A method of communicating a modulating baseband signal from a first location to a second location, comprising the steps of:

• (1) modulating a first oscillating signal with a modulating baseband signal to generate a modulated signal having an associated modulated spectrum;
• (2) modulating the modulated signal with a second oscillating signal to generate a plurality of redundant spectrums, wherein each of the redundant spectrums contains information that is representative of the modulating baseband signal;
• (3) transmitting at least a subset of the plurality of redundant spectrums from the first location to the second location;
• (4a) receiving the transmitted redundant spectrums at the second location;
• (4b) down-converting the received redundant spectrums using a control signal comprising a plurality of pulses having apertures so as to generate down-converted redundant spectrums, wherein the frequency of the plurality of pulses is equal to (Freq.sub.input +/-Freq.sub.IF)/n, where Freq.sub.input is the center frequency of the received redundant spectrums, Freq.sub.IF is the center frequency of the down-converted redundant spectrums, and n represents a harmonic or sub-harmonic of Freq.sub.input ;
• (5) isolating at least a subset of the down-converted redundant spectrums;
• and
• (6) extracting a demodulated baseband signal from the isolated redundant spectrums, whereby the extracted demodulated baseband signal is representative of the modulating baseband signal.

A system for generating a communications signal that is representative of a modulating baseband signal, comprising:

• a first stage modulator that generates a modulated signal using the modulating baseband signal and a first oscillating signal;
• a second stage modulator coupled to said first stage modulator that generates a plurality of redundant spectrums using said modulated signal and a second oscillating signal, wherein each of said redundant spectrums contains information that is representative of the modulating baseband signal;
• means for adjusting said second oscillating signal to tune the frequency bandwidth occupied by said redundant spectrums;
• and
• means for transmitting a plurality of said redundant spectrums;
• whereby the redundant spectrums are received according to the process of:
• (a) down-converting the redundant spectrums using a control signal to generate a plurality of down-converted redundant spectrums, wherein the control signal comprises a plurality of pulses having apertures established to improve energy transfer to the down-converted redundant spectrums, wherein the frequency of the plurality of pulses is equal to (Freq.sub.input +/-Freq.sub.IF)/n, where Freq.sub.input is the center frequency of the received redundant spectrums, Freq.sub.IF is the center frequency of the down-converted redundant spectrums, and n represents a harmonic or sub-harmonic of the Freq.sub.input ;
• (b) isolating at least a subset of the down-converted redundant spectrums;
• and (c) extracting a demodulated baseband signal from at least one of the isolated redundant spectrums, wherein the extracted demodulated baseband signal is representative of the modulating baseband signal.

A system for recovering a demodulated baseband signal from a plurality of received redundant spectrums, comprising:

• an aliasing module for down-converting the received redundant spectrums to generate down-converted redundant spectrums;
• a filter bank coupled to said aliasing module for isolating the down-converted redundant spectrums;
• and
• a signal extraction module coupled to said filter bank for extracting the demodulated baseband signal from at least one of the isolated redundant spectrums;
• wherein said aliasing module samples said received redundant spectrums according to a control signal, said control signal comprising a plurality of pulses having a frequency equal to (Freq.sub.input +/-Freq.sub.IF)/n, where Freq.sub.input is the center frequency of the received redundant spectrums, Freq.sub.IF is the center frequency of the down-converted redundant spectrums, and n represents a harmonic or sub-harmonic of Freq.sub.input.