SIGNAL-DETECTION FOR PAGE-ACCESS OPTICAL MEMORIES WITH INTERSYMBOL INTERFERENCE

We propose a technique for data detection in a two-dimensional page-ac cess optical memory. The technique combines sequence detection by the use of the Viterbi algorithm with decision feedback to improve the bit -error-rate performance in a system corrupted by intersymbol interfere nce. It has an advantage in that it can be operated on a row-by-row ba sis as data are output from the optical detector. Use of the proposed scheme might ease the design tolerances of the optical components or p ermit the use of large data pages. (C) 1996 Optical Society of America