	US 12,155,482 B2
	Hierarchical deep channel coding
Mohammed Alloulah, Cambridge (GB); Aliye Özge Kaya, Chatham, NJ (US); and Murhaf Hossari, Mountain View, CA (US)
Assigned to NOKIA SOLUTIONS AND NETWORKS OY, Espoo (FI)
Filed by NOKIA SOLUTIONS AND NETWORKS OY, Espoo (FI)
Filed on Apr. 3, 2023, as Appl. No. 18/130,156.
Claims priority of provisional application 63/331,600, filed on Apr. 15, 2022.
Prior Publication US 2023/0336275 A1, Oct. 19, 2023
Int. Cl. H04L 1/00 (2006.01)

CPC H04L 1/0076 (2013.01) [H04L 1/0061 (2013.01)]

9 Claims

4. A method, comprising:

encoding, by a layer-0 autoencoder, bit sequence x into a layer-0 codeword;

transmitting, by the layer-0 autoencoder, the layer-0 codeword over a channel;

decoding a received layer-0 codeword;

checking at least one parity or log-likelihood ratio value to determine if errors exist in the received layer-0 codeword;

providing feedback log-likelihood ratio metrics to the encoder and a decoder of the layer-1 autoencoder;

encoding, by the layer-1 autoencoder, the bit sequence x into a layer-1 codeword;

transmitting, by the layer-1 autoencoder, the layer-1 codeword;

decoding a received layer-1 codeword, wherein the layer-1 codeword has fewer bits than the layer-0 codeword;

determining that the layer-1 codeword has been received correctly according to the at least one parity or log-likelihood ratio value; and

in response to determining that the layer-1 codeword has been received correctly, transmitting an acknowledgement to a transmitter.