Apparatus and method for channel estimation
AssigneeMediatek Incorporation
InventorsMing-Luen Liou, Chiao-Chih Chang
Life of this patent
Estimating the term…
Abstract
In a channel estimation method, an input signal is received. The input signal is then sliced to obtain a sliced signal. The multiplication of the input signal and the ith delayed sliced signal are accumulated to obtain a cross-correlation value. The energy of the sliced signal is measured. The ith channel parameter of a channel response is estimated according to the division of the cross-correlation value by the energy of the sliced signal. A channel estimator performing channel estimation is also provided.
Claims5
A channel estimation method, comprising:
- receiving an input signal;
- slicing the input signal to obtain a sliced signal;
- accumulating the multiplication of the input signal and
- an ith delayed sliced signal to obtain a fist value, where i is an integer;
- measuring the energy of the of the sliced signal and outputting a second value;
- and
- approximating the ith channel parameter of a channel response according to the first and second values.
A channel estimator for estimating a transmission channel response represented by a plurality of channel parameters, comprising:
- a slicer, receiving an input signal and slicing the input signal to obtain a sliced signal;
- a delay line, comprising a plurality of delay units, for receiving the sliced signal and generating a plurality of delayed signals;
- an energy meter for measuring the energy of the sliced signal;
- and
- a plurality of estimating units, each coupling to a respective delay unit, for estimating a corresponding channel parameter according to the input signal, the output signal of the delay unit, and the measured energy of the sliced signal.
Dependencies are inferred from the claim text.