I'm not saying there are no accounts available, but you'll have to dig pretty hard for them, because "human wave attack" is a propaganda term the other side uses to describe an attack.

I go into this in a bit of detail, specific to the Korean War, in this comment https://www.reddit.com/r/AskHistorians/comments/3qlws2/why_were_chinese_human_wave_attacks_successful/cwgsnkt/?st=j2jq3jw7&sh=da8b41e3 from a previous post on the subject. This post also includes a link to some captured Chinese discussion of their actual tactics in Korea which you might be interested in even though it's not a personal account.

Which isn't to say that there is no such thing as a "human wave attack", they just are very uncommon and frequently it's just a more sensible tactic poorly planned or executed.