| 20090060103 | CHANNEL ESTIMATION APPARATUS AND METHOD FOR THE SAME - A channel estimation apparatus and a method for the same are provided. The channel estimation apparatus includes a preamble buffer unit, a gain adjusting unit, a demodulation unit, and an estimation unit. The preamble buffer unit receives and temporarily stores a plurality of symbols in preamble signal. The symbols correspond to a plurality of gain control values. The gain adjusting unit adjusts the symbols to a plurality of gain normalized symbols according to the gain control values. The demodulation unit receives the gain normalized symbols and demodulates the same to obtain a frequency domain demodulation signal. The estimation unit receives the frequency domain demodulation signal and performs a channel estimation about the frequency domain demodulation signal and a frequency domain reference value of a standard preamble signal, so as to obtain a channel frequency response. | 03-05-2009 |
