Coding and decoding of a polar code concatenated with interleaving with an outer systematic code

A radio node for performing encoding of a plurality of data bits for transmission by the radio node, the radio node comprising:

• a transmitter;
• and
• at least one processor operable to:
• encode a plurality of data bits using a linear encoder to provide a first plurality of coded bits, the first plurality of coded bits comprising a plurality of parity bits and the plurality of data bits, where the plurality of parity bits are a single parity check code;
• interleave the first plurality of coded bits in accordance with an interleaving mapping to provide a plurality of interleaved bits;
• and
• encode the plurality of interleaved bits and one or more frozen bits using a polar encoder to provide a second plurality of coded bits to be transmitted by the radio node.

A radio node to perform decoding of a plurality of coded bits received by the radio node, comprising:

• a transmitter;
• and
• at least one processor operable to:
• decode a plurality of coded data bits using a polar decoder to provide a plurality of decoded bits, the plurality of decoded bits comprising a plurality of parity bits interleaved with a plurality of data bits, where the plurality of parity bits are a single parity check code;
• and
• deinterleave the plurality of decoded bits in accordance with an interleaving mapping to thereby provide the plurality of parity bits and the plurality of data bits.