LU Xin (1975-), male, Ph.D.; research fields: advanced wireless communications technology, include MIMO and OFDM(A), baseband process algorithms for WlMAX, LTE and AIE. WANG Jian-hua (1974-), male, Master; research fields information and communications, DSP and ARM technology. XU Jun (1976-), male, senior engineer; research fields LDPC, channel estimation methods.