The dollar was edging up as investors awaited the Federal Reserve's Jackson Hole economic symposium later this week.

Fed Chair Jerome Powell will speak Friday at the event and the market will be looking for any hints on whether the central will resume cutting interest rates in September as widely expected.

Powell's Jackson Hole speech has often been used to send important policy signals and last year he said it was time to adjust policy before the Fed cut rates at the next meeting, Deutsche Bank analysts said in a note.