OTTAWA (Reuters) - It could take up to a year to see increased competition in Canada's wireless market in the wake of an auction of extra space on the airwaves, Industry Minister Jim Prentice said on Tuesday.

"I've seen estimates ... that it will be approximately a year before we see new competition but I certainly anticipate that at some time between now and that date that we will begin to see new competition in the marketplace," he told a news conference in Edmonton, Alberta.

The auction ended on Monday. It raised C$4.25 billion ($4.25 billion), more than twice the amount analysts had expected.

($1=$1 Canadian)

(Reporting by David Ljunggren; Editing by Bernadette Baum)

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