this neon-on-deep-blue tiling is reminiscent of carpets found in 1990's arcades, movie theaters, bowling alleys, and roller skating rinks.  the symbols used are glyphs in the sitelen pona writing system for the minimalist constructed language toki pona. 
attribution:  the overall design of this pattern was the work of colleen quine (Neonpixii on Wikimedia).  the work done to make it tile seamlessly on the edges was by iliana etaoin.  the font used is linja pona version 4, which is licensed as CC-BY 4.0 and was created by David A Roberts (http://musilili.net/linja-pona/).  the glyphs were originally designed by Sonja Lang and published in Toki Pona: The Language of Good (2014).
the glyphs featured, in alphabetical order, are:

a - emphasis particle; akesi - reptile-like animal; ike - bad; kala - fish; ko - dust, clinging form; leko - square; lili - small; linja - long, thin, flexible; monsuta - monster, fear; mu - animal sound; mun - moon, celestial object; musi - fun, entertaining; nasa - strange; namako - spice, exciting, additional; pilin - percieve, feel, think; pona - good, simple, happy; seli - fire; sike - circle; sin - new; sona - knowledge; soweli - mammal, animal; suli - big, important; suwi - cute, sweet; telo - water; toki - communication, language, hello; waso - bird
Own work
Neonpixii