Abstract:
In many Orthogonal Frequency Division
Multiplexing (OFDM)systems, pilots are periodically
transmitted for channel estimation. In this paper, we
investigate a simple noise power estimation algorithm
based on the time-domain channel response computed
from the received pilots. The noise power level is
estimated by averaging the received power over a
predetermined window in the time-domain channel
response.By analysis and simulation, the performance
of the noise power estimation algorithm is evaluated.
