Most Asian stocks rose on Wednesday on an extended rebound in the technology sector as investors awaited key earnings from some of the biggest companies in the world.

The Bank of Japan will raise interest rates again if trend inflation accelerates toward its 2% target as expected, governor Kazuo Ueda said, keeping alive market expectations of a further withdrawal of monetary support later this year.

The U.S. Federal Reserve will wait until September to cut its key interest rate, according to a majority of 100 economists polled by Reuters, with half saying there will be only two cuts this year and only about a third forecasting more. 

A senior Chinese central bank official suggested on Tuesday that the bank's buying and selling of treasury bonds in the secondary market could be used for liquidity management and as a monetary policy tool.

Japan's annual business-to-business service inflation accelerated for the second month to hit 2.3% in March, data showed on Wednesday, suggesting firms continued to pass on rising labour costs thanks to prospects for sustained wage gains.

The dollar nursed its wounds on Wednesday following big tumbles against the euro and sterling, but the yen remained mired near 34-year lows even as Japanese officials stepped up intervention warnings.