[1] Bell Labs, Murray Hill, NJ 07974 USA
[2] Purdue Univ, Elect Engn, W Lafayette, IN 47907 USA
[3] Amer Phys Soc, San Francisco, CA USA
[4] Amer Assoc Advancement Sci, Washington, DC USA
[5] BUET, Dept Elect & Elect Engn, Dhaka, Bangladesh
[6] EWU, Fac Sci & Engn, Dhaka, Bangladesh
[7] EWU, Dept Elect & Elect Engn, Dhaka, Bangladesh