Asian stock markets are mixed on Wednesday, with investors treading cautiously ahead of the U.S. Federal Reserve's monetary policy decision later in the day. With the Fed widely expected to raise interest rates by a quarter-point, investors are likely to keep a close eye on the accompanying statement as well as outgoing Fed Chair Janet Yellen's press conference for clues about the outlook for future rate hikes. The Australian market is higher following the mostly positive cues overnight from Wall Street and as investors digested upbeat Australian consumer confidence data. Nevertheless, gains are modest on caution ... (full story)