Billionaire investor George Soros said on Monday he thinks the U.S. Federal Reserve's monetary tightening could tip the economy into recession in 2007 and he expects a sharp dollar decline. Soros said he expects the federal funds rate, now at 4.25 percent, to peak at 4.75 percent and that the Fed would try to achieve a soft landing for the economy. Nevertheless, the Fed could overshoot, he told a seminar in Singapore. "If housing continues to cool while rates are slowing then it could turn into a hard landing," Soros said. "That's why I expect a recession to happen in 2007, not 2006."