Multi-layer rate splitting for wireless communications

A method for wireless communication, comprising:

• identifying a data stream for transmission to a wireless device;
• encoding the data stream according to a code rate based at least in part on a number of multiple data sub-streams;
• splitting the encoded data stream into multiple encoded data sub-streams based at least in part on the number of multiple data sub-streams;
• spreading each of the multiple encoded data sub-streams using respective spreading codes;
• and
• transmitting, to the wireless device, a combined data stream that includes each of the encoded spread multiple data sub-streams according to a code division multiplexed scheme.

A method for wireless communication, comprising:

• receiving a set of code-based signals for multiple wireless devices;
• identifying multiple layers of a first code-based signal of the set of code-based signals, the first code-based signal corresponding to a first wireless device;
• computing a set of log-likelihood ratios (LLRs) for each layer of the multiple layers based at least in part on one or more sets of LLRs determined from the multiple layers of the other code-based signals of the set of code-based signals to be used for decoding the first code-based signal;
• and
• decoding a set of the multiple layers of the first code-based signal based at least in part on one or more sets of LLRs of the multiple layers.

An apparatus for wireless communication, comprising:

• a processor;
• memory in electronic communication with the processor;
• and
• instructions stored in the memory and operable, when executed by the processor, to cause the apparatus to:
• identify a data stream for transmission to a wireless device;
• split the data stream into multiple data sub-streams;
• encode each of the multiple data sub-streams according to a code rate based at least in part on a number of the multiple data sub-streams;
• spread each of the multiple data sub-streams using respective spreading codes;
• and
• transmit, to the wireless device, a combined data stream that includes each of the spread multiple data sub-streams according to a code division multiplexed scheme.