Goldman Sachs GS.N Chief Executive David Solomon said he anticipated a period of higher inflation. By Matt Scuffham NEW YORK, Dec 7 (Reuters) - U.S. bank executives on Tuesday raised concerns about the impact of a sustained period of higher inflation, adding to pressure on the Federal Reserve to accelerate plans to slow down the pace of its asset purchases. The Fed needs to be ready to respond to the possibility that inflation may not recede in the second half of next year as most forecasters currently expect, Federal Reserve Chair Jerome Powell said last week.