Performance analysis of optical associative memory with translation invariance

Performance analysis of optical associative memory with translation invariance. After analysing the performance of outer-product model with invariance, an inner-product associative memory model with translation invariance is proposed. A strictly increasing nonlinear operation which is cooperated with a sign function is chosen to guarantee the correct recall convergence of the network without iteration. The performance of network is improved drastically. This model can be implemented by a simple optical system with parallel processing capability