Energy-based arithmetic coding for probabilistic amplitude shaping

An apparatus for wireless communication at a transmitting node, comprising:

• a memory;
• and
• one or more processors, coupled to the memory, configured to:
• obtain a k-bit sequence of information bits;
• encode the k-bit sequence to an output sequence that corresponds to a length-n symbol sequence in a set of symbol sequences of length n and over an alphabet in accordance with a first phase of energy-based arithmetic coding for probabilistic amplitude shaping (PAS) and a second phase of energy-based arithmetic coding for PAS, wherein:
• the first phase of energy-based arithmetic coding for PAS is associated with determining an energy E associated with the length-n symbol sequence;
• and
• the second phase of energy-based arithmetic coding for PAS is associated with determining the length-n symbol sequence based at least in part on multiple iterations, wherein each iteration is associated with deriving energies of subsequences of the length-n symbol sequence;
• and
• perform, to a receiving node, a transmission based at least in part on the length-n symbol sequence.