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Submitted on: 03 January 2014.
Revised on: 17 March 2014.
Accepted on: 13 April 2014.
___________________IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY
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Submitted on: 21 December 2017.
Revised on: 19 February 2018.
Accepted on: 18 March 2018.
___________________IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY
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