Table 4 Computer simulations environmental conditions

Channel environment

Additive white Gaussian noise (AWGN), typical urban (TU)-6 channel

Channel estimation method using pilot symbol

Least-square method [16]

Channel interpolation method in frequency domain

Cubic-spline interpolation method [17] (the number of pilot symbols for interpolation: 12 symbols)

Channel interpolation method in time domain

Linear interpolation [18]

Center frequency

476 MHz (digital TV channel no. 14 in Korea)