Kacaniklic is confident Fulham can find the improvement they require.
"We know that we need to raise our game and a win against West Ham would put things back on track," he said.
"It's been a difficult period and January has been a strange month for us. It started well with a win at West Bromwich Albion and there was the draw with Wigan, now we have lost our last two games.
"But we are determined to pull through. We want to be a lot higher in the table so we have to start winning again.
"Hopefully that starts in four days' time.
"West Ham are a good side, but we feel confident of being anyone at Craven Cottage."