A CFO Estimation Method Based on Multiple Noises
A technology of noise and channel noise, which is applied in the field of CFO estimation based on multiple noises, and can solve problems such as OFDM performance degradation
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Embodiment 1
[0026] The multi-noise-based CFO estimation method described in this example includes steps such as multi-noise triggering, capturing synthetic signals, estimating deflection factors, and estimating CFO.
[0027] A preferred scheme includes the following steps:
[0028] Step 1: Multi-noise trigger;
[0029] Step 1-1: Set the constant N g , for length N=N g 2 The transmitted signal x(n)(n=0..N-1), its received signal y(n)=x(n)*δ(ε)+w(n), where δ is the signal deflection due to CFO Factor, which is a function of ε, ε is the CFO to be estimated, and w(n) is the channel noise;
[0030] Step 1-2: Set the number of noise k to generate a unitary matrix training sequence
[0031] u k ={u 1 (n), u 2 (n),... u k (n)}, randomly generate channel noise W k ={w 1 (n),w 2 (n),...w k (n)}, using the channel model established in step 1-1 to generate corresponding received signals
[0032] Y k ={y 1 (n),y 2 (n),...y k (n)};
[0033] Step 2: Capture the synthetic signal;
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Description
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Application Information
- IPC
- H04L27/26
- CPC
- H04L27/2657; H04L27/2695
- Inventors
- 李锋; 李静