1. School of Electronics Engineering, VIT-AP University, Amaravati, India
2. School of Computer Science and Engineering, VIT-AP University, Amaravati, India
3. Department of ECE, Bapatla Engineering College, Bapatla, India
4. Economics Department, SP4TE-Signal Processing for Telecommunications and Economics Laboratory, University of Roma Tre, Rome, Italy
5. University of Johannesburg, Johannesburg, South Africa