Patent ID: 9479360
Filing Date: 2016-10-25
CPC Classification: H04B,H04L

Claim Text:
1. A terminal including a transmitter and a receiver, the receiver comprising: a pilot detection unit configured to detect a pilot signal from a received signal; a low-pass filter configured to filter noise from the pilot signal; a channel equalizer configured to perform channel equalization for data of the received signal, based on the filtered pilot signal; and a channel estimation controller configured to adaptively adjust at least one of a coefficient and an order of the low-pass filter, wherein the coefficient of the low-pass filter is controlled according to characteristics of the pilot signal, and wherein the order of the low-pass filter is controlled based on a group delay of a current low-pass filter being used according to a selected bandwidth, wherein the coefficient of the low-pass filter is determined based on a mean square error associated with at least one of a signal to noise ratio and a Doppler frequency of the pilot signal, and wherein the mean square error is defined as follows: where, Δ denotes the group delay of the low-pass filter, T  denotes a reciprocal number of the signal to noise ratio, f