A novel energy efficient two-dimensional pilot muting mechanism for non-stationary channel fading environment

To support communication channels with non-stationary properties, the pilots are usually configured for the channel worst case in order to ensure the accuracy of tracking the channel, which inevitably causes a waste of resources. To solve this issue, first, a flexible two-dimensional pilot muting mechanism is proposed by exploiting the time and frequency diversity of the pilot sequence of the resource grid for non-stationary channel fading environment. Then a super-resolution based non-stationary channel recovery scheme for data channel recovery is further proposed for two-dimensional pilot muting, and the energy efficiency of a resource block is also maximized. Numerical results show that the proposed mechanism can bring about as much as 8 dB performance gain in system energy efficiency.