Channel estimation method and device
A channel estimation and channel estimator technology, applied in the field of OFDM symbol-based channel estimation method and device, channel estimation method and device, can solve the problem of reducing the 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, the processing that the receiver needs to perform mainly has three steps, as follows:
[0080] Step 1: Process the discrete pilots in the received frequency-domain signal to generate a time-domain channel impulse response;
[0081] Step 2, reconstructing the physical signal parsed from the frequency domain signal, and processing the reconstructed signal generated after the reconstruction to obtain an 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-mentioned time-domain channel impulse response to obtain a final channel estimation result.
[0083] Step 1: Process the discrete pilots in the received frequency-domain signal to generate a time-domain channel impulse response. The detailed process is as...
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-mentioned time-domain channel impulse response to obtain a final channel estimation result.
[0124] Step 1: Process the discrete pilots in the received frequency-domain signal to generate a time-domain channel impulse response. Th...
Embodiment 3
[0156] Figure 12 Shown is a schematic of the pilot distribution in CAS Figure 3 , where there are continuous pilots and discrete pilots, as well as reconfigurable signals. In this embodiment, in the process of obtaining the initial multipath distribution result, a method of processing the reconstructed signal and the continuous pilot frequency is adopted. Figure 13 Shown is the flow of the channel estimation method adopted in Embodiment 3 Figure 3 , after entering the channel estimation stage, the processing that the receiver needs to perform mainly has three steps, as follows:
[0157] Step 1: Process the discrete pilots in the received frequency-domain signal to generate a time-domain channel impulse response;
[0158] Step 2, reconstruct the physical signal parsed from the frequency domain signal, and process the reconstructed signal generated after reconstruction and the continuous pilot in the received frequency domain signal to obtain an initial multipath distribu...
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