MIMO-OFDM system for robust and efficient neuromorphic inter-device communication

摘要

A Multiple Input Multiple Output (MIMO) Orthogonal Frequency Division Multiplexing (OFDM) system for inter-device communication is described. Information data from each neuromorphic chip is coded and modulated, on the basis of destination, into different channels. The parallel signals in different channels are sent serially using TDM to a central router. After signal grouping by a central switching controller, each group of signals may be delivered to corresponding transmitter in the central router for transmission to a corresponding receiver in the neuromorphic chip using TDM.

主权项

1. A system comprising:
a plurality of neuromorphic devices, each respective neuromorphic device having a transmitter and a receiver, and a plurality of neurons, wherein each respective neuromorphic device is configured to: separate a plurality of data from the plurality of neurons to be transmitted to a plurality of destinations, each data comprising a first sub-word and a second sub-word, wherein the first sub-word encodes a P value for making synaptic conductance changes at a synapse of a receiving post-synaptic neuron based on spike timing dependent plasticity and wherein the second sub-word comprises a destination address, into a plurality of channels, wherein each respective channel of the plurality of channels comprises respective data for a destination neuromorphic device having the respective destination address; use FDM or OFDM to separate the plurality of data into a plurality of frequency bands; combine the separated plurality of data into respective combined data; and transmit the respective combined data; and a central router having a plurality of router receivers and a plurality of router transmitters, where at least one respective router receiver and at least one respective router transmitter is coupled to a respective neuromorphic device, and wherein the central router is configured to; receive each respective combined data at least at one respective a router receiver, wherein at least one respective router receiver comprises a MIMO receiver; separate in parallel the respective combined data received from each respective neuromorphic device into a plurality of separated first data, wherein each respective separated first data of the plurality of first data has the same destination address; and transmit each separated respective first data using at least one respective router transmitter to a receiver of another one of the plurality of neuromorphic devices associated with the destination address, wherein at least one respective router transmitter comprises a MIMO transmitter.