Deterministic rotational coding
View Patent ↗A system and method for implementing a network encoding scheme includes buffering a signal in quantized form at a node of a network and permuting the signal into a particular order of code blocks. The code blocks are rotated using at least one key which has been assigned to the node, wherein the at least one assigned key is a value which is used to control the amount of rotation. The rotated code blocks are then combined to generate a combined signal. The combined signal is permuted back to generate at least one output signal.
1. A method for implementing a network encoding scheme, comprising the steps of:
buffering at least one received signal by a node of a plurality of nodes of a network;
wherein said buffering comprises buffering the at least one received signal in a quantized form at the node of the network;
rearranging the received signal in a certain order into q blocks;
rotating each of the rearranged q blocks with a rotation value;
wherein the rotation value is derived by at least one key which has been assigned to each of the plurality of nodes of the network;
combining the rearranged rotated blocks together to generate at least one output block;
generating one output signal for each of the q blocks by rearranging the at least one output output block in quantized form;
a source node selecting codewords to be transmitted to destination nodes;
the source node then selecting a particular location of the codewords to be transmitted to send pilot signals that are known to the destination nodes;
forwarding the output signal to a destination node; and
wherein the destination nodes which have knowledge of all the assigned keys and the location of pilot signals, as well as the network topology, decode the received signals using the pilot signals and the assigned key.
2. The method of claim 1 , wherein the at least one key is generated by a source node which assigns at least one key to each node of a network.
3. The method of claim 1 , wherein the at least one key is generated at each node using a given method and identifier which is unique to each node.
4. The method of claim 1 , wherein the node is a half-duplex node and the method further comprises scheduling a reception and a transmission of the at least one signal.
5. The method of claim 1 , wherein a plurality of output signals are generated.
6. the method of claim 1 , wherein the node has a plurality of outgoing channels and/or a plurality of component channels each of which is assigned a unique key.