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

Abstract

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.