[1] Wuhan Univ Technol, Sch Informat Engn, Wuhan 430070, Peoples R China
[2] Wuhan Univ Technol, Hubei Key Lab Broadband Wireless Commun & Sensor, Wuhan 430070, Peoples R China
[3] Univ Birmingham, Dept Mech Engn, Birmingham B15 2TT, W Midlands, England