I think you can use an arpegiator and some delay + reverb, you can play only one note if the synth has more than 3 oscillators... or maybe you can play a note chord with a keyboard...
I'm not expert musician, so I prefer the first option.
Also you will need to adjust the envelope with a fast attack and not so longer decay...
I'm not sure of this, but maybe he used more than one waveform type, it has sawtooth, but maybe some sinewave too.

It's not easy to describe using words, especially if the english is not the native language...