Optical error-correction coding encoder and decoder: design considerations.
Novel all-optical parallel implementations of encoder and decoder systems for error detection and correction with linear codes are proposed. The key components are optical vector-matrix multipliers and optical lookup tables. Evaluation is made of the overall system throughput and the hardware requirement with a case of a simple (7, 4) Hamming error-detection coding for a two-dimensional picture of 1000 × 1000 pixels with near-future ferroelectric liquid-crystal devices, which results in a best throughput of approximately 5.6 × 10(10) pixels/s and a size of 1 cm × 1 cm with a combination of time-and space-division techniques.
W
W
Kawakami
K I
KI
Kitayama