A channel estimation method and device
A channel estimation and channel impulse response technology, which is applied in channel estimation, digital transmission system, baseband system components, etc., can solve the problem of reduced accuracy of channel estimation results and achieve the effect of improving accuracy
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Embodiment 1
[0079] Figure 9 Shown is the flow of the channel estimation method adopted in Embodiment 1 Figure 1 , after entering the channel estimation stage, there are three main steps for the receiver to process, as follows:
[0080] Step 1, processing the scattered pilots in the received frequency domain signal to generate a time domain channel impulse response;
[0081] Step 2, reconstructing the physical signal analyzed in the frequency domain signal, and processing the reconstructed signal generated after reconstruction, to obtain the initial multipath distribution result;
[0082] Step 3, using the initial multipath distribution result to perform time domain windowing and discrete Fourier transform on the above time domain channel impulse response to obtain the final channel estimation result.
[0083] Step 1, process the scattered pilots in the received frequency domain signal to generate a time domain channel impulse response, the detailed process is as follows:
[0084] In ...
Embodiment 2
[0120] Figure 10 Shown is a schematic of the pilot distribution in CAS Figure II , where there are continuous pilots. Figure 11 Shown is the flow of the channel estimation method adopted in Embodiment 2 Figure II , after entering the channel estimation stage, there are three main steps for the receiver to process, as follows:
[0121] Step 1, processing the scattered pilots in the received frequency domain signal to generate a time domain channel impulse response;
[0122] Step 2, processing the continuous pilots analyzed in the frequency domain signal to obtain the initial multipath distribution result;
[0123] Step 3, using the initial multipath distribution result to perform time domain windowing and discrete Fourier transform on the above time domain channel impulse response to obtain the final channel estimation result.
[0124] Step 1, process the scattered pilots in the received frequency domain signal to generate a time domain channel impulse response, the detai...
Embodiment 3
[0156] Figure 12 Shown is a schematic of the pilot distribution in CAS Figure three , where there are continuous and scattered pilots, and a reconfigurable signal. In this embodiment, in the process of obtaining the initial multipath distribution result, a method of processing reconstructed signals and continuous pilots is adopted. Figure 13 Shown is the flow of the channel estimation method adopted in Embodiment 3 Figure three , after entering the channel estimation stage, there are three main steps for the receiver to process, as follows:
[0157] Step 1, processing the scattered pilots in the received frequency domain signal to generate a time domain channel impulse response;
[0158] Step 2, reconstructing the physical signal analyzed in the frequency domain signal, and processing the reconstructed signal generated after reconstruction and the continuous pilot in the received frequency domain signal to obtain the initial multipath distribution result;
[0159] Step...
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