Miller attended James F. Byrnes High School in Duncan, South Carolina, where he played football as a cornerback.
In 2007, Miller appeared in 13 games, making eight starts at cornerback, finishing the season with 24 tackles, one interception, and seven pass break-ups.
In 2009, his senior season, Miller was named a special teams captain and started all 13 games, making 42 tackles, including five for a loss, and returning 19 punts for 226 yards.
The Ravens signed Miller off the Patriots' practice squad on September 15, 2010 to their active roster.
The Lions signed Miller off the Ravens' practice squad on December 8, 2010 to their active roster.