Channel profiling for frequency-hopping direct-sequence spread spectrum systems

A system for wireless communication, comprising:

• one or more processors and a memory including instructions stored thereupon, wherein the instructions upon execution by the one or more processors cause the system to:
• receive, over a channel, a frequency-hopping (FH) direct-sequence spread spectrum (DSSS) signal comprising a pilot sequence and an information signal, wherein the FH DSSS signal is associated with a plurality of frequency hops;
• perform, using a first subset of frequency hops of the plurality of frequency hops, a timing acquisition operation using the pilot sequence, wherein using the first subset of frequency hops determines an output of the timing acquisition operation;
• perform, subsequent to the timing acquisition operation and using a second subset of frequency hops of the plurality of frequency hops, a predominant delay estimation operation, wherein the second subset of frequency hops is non-overlapping with the first subset of frequency hops, and wherein using the second subset of frequency hops determines an output of the predominant delay estimation operation;
• compute, based on an output of the predominant delay estimation operation, a channel estimate using a multilayer perceptron (MLP);
• and
• perform, based on the channel estimate, a receiver processing operation on the FH DSSS signal to generate an estimate of the information signal.

A system for wireless communication, comprising:

• a transceiver configured to receive, over a channel, a frequency-hopping (FH) direct-sequence spread spectrum (DSSS) signal comprising a pilot sequence and an information signal, wherein the FH DSSS signal is associated with a plurality of frequency hops;
• and
• one or more processors, communicatively coupled to the transceiver, configured to cause the system to:
• perform, using the pilot sequence and a first subset of the plurality of frequency hops, a timing acquisition operation using a full correlative processing operation, wherein using the first subset of the plurality of frequency hops determines an output of the timing acquisition operation,
• perform, subsequent to the timing acquisition operation and using a second subset of the plurality of frequency hops, a predominant delay estimation operation, wherein estimating predominant channel delays excludes using the full correlative processing operation, wherein the second subset of the plurality of frequency hops is non-overlapping with the first subset of the plurality of frequency hops, and wherein using the second subset of the plurality of frequency hops determines an output of the predominant delay estimation operation,
• compute, based on an output of the predominant delay estimation operation, a channel estimate comprising an estimate of each of a number of channel taps that represent the channel, wherein the estimate of each channel tap comprises a gain, a phase, and a delay, and
• perform, based on the channel estimate, a receiver processing operation on the FH DSSS signal to generate an estimate of the information signal.