Method and apparatus for estimating speed-adapted channel

An apparatus for estimating a speed-adapted channel, comprising:

• a demultiplexer, a first multiplier, an adding unit, a temporary decision unit, a multiplexer, a first conjugation unit, and a second multiplier being in successive connection;
• a low pass filter, a second conjugation unit, a third multiplier, a Viterbi soft decoder, an interpolation section, a delay unit, an estimation unit for a channel fading rate, and a look-up table being in successively connection;
• an output from the second multiplier being connected respectively to the low pass filter and the estimation unit for the channel fading rate;
• an output from the estimation unit for the channel fading rate being connected to the interpolation section through the look-up table;
• a second output from the demultiplexer being connected to the interpolation section;
• an output from the interpolation section being connected to the first multiplier;
• an output from look-up table being connected respectively to the low pass filter and the delay unit;
• inputs of the delay unit and the demultiplexer being connected in parallel;
• and
• an output from the delay unit being connected to the Viterbi soft decoder through the third multiplier.