求翻译：由于处理域的不同，信道估计技术有频域与时域的区分。频域在接收端FFT变换之后进行，是信道的频域响应估计。而时域是在FFT之前进行，估计信道的脉冲响应。二者都有优点，为了使时域、频域的信息充分被利用，也可进行联合估计来尽力挖掘各自的特点。是什么意思？

Due to the different processing domain channel estimation techniques have frequency-domain and time-domain distinction.

Due to the processing area, Channel estimation techniques for frequency domain and time domain. Frequency domain at the receiving end FFT transformation after the channel frequency domain response. When the domain is in FFT before, the estimated channel Impulse Response. 2, there are advantages, and

正在翻译，请等待...

Due to the different domain, frequency domain and time domain channel estimation technology of distinction. Frequency-domain FFT transform at the receiving end, is the channel response estimation in frequency domain. Time domain is done before the FFT estimated channel impulse response. Both have ad

正在翻译，请等待...