From: Performance evaluation of max-dmin precoding in impulsive noise for train-to-wayside communications in subway tunnels
Precoders
d min 2
Fr 1 0≤θ≤θ0
E s ρ 2 6 M − 1 cos 2 γ N 2 + 3 N + 2 withN= M −1
Foctaθ0≤θ≤π
E s ρ 2 6 2 − 2 M − 1 cos 2 γ sin 2 γ 1 + 2 − 2 2 cos 2 γ