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Submitted on: 04 January 2015.
Revised on: 23 April 2015.
Accepted on: 08 June 2015.
___________________IEEE COMMUNICATIONS MAGAZINE---IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Submitted on: 19 November 2021.
Revised on: 19 December 2021.
Accepted on: 09 February 2022.
___________________IEEE COMMUNICATIONS MAGAZINE---IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
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