Design of optical pulse position modulation (PPM) translating receiver

Untitled

“…Owing to the bit error rate (BER) performance of soft decision decoding being superior to hard decision decoding, soft decision decoding is usually used in FSO communications [4][5][6] . However, the soft decision decoding receivers are generally based on a field-programmable gate array (FPGA) [8][9][10] or erbium-doped waveguide amplifier (EDWA) planar lightwave circuits (PLCs) [11] , which leads to its hardware being more complicated and more consumptive than the hard decision decoding receiver's.With the growing needs of communication quality, the study of FSO communication is no longer confined to a single modulation technology. An effective technology to control error is using automatic repeat request (ARQ) in the FSO links [12][13][14][15][16][17] .…”

“…Owing to the bit error rate (BER) performance of soft decision decoding being superior to hard decision decoding, soft decision decoding is usually used in FSO communications [4][5][6] . However, the soft decision decoding receivers are generally based on a field-programmable gate array (FPGA) [8][9][10] or erbium-doped waveguide amplifier (EDWA) planar lightwave circuits (PLCs) [11] , which leads to its hardware being more complicated and more consumptive than the hard decision decoding receiver's.…”