1. Introduction
2. Signal model
3. Second-order cyclostationarity of OFDM signal
3.1. Derivation for second-order cyclic cumulant
3.2. Analytical expression of CC properties for parameter extraction
4. Joint delay and CF domain estimation for OFDM parameters
4.1. Estimation of subcarrier number K and symbol duration T u
4.2. Estimation of CP duration and OFDM symbol period T
4.3. Determination of threshold value Tth
5. Simulation results
K/CP | 1/4 | 1/8 | 1/16 | 1/32 |
---|---|---|---|---|
128 | 0.96 | 1.00 | 1.00 | 1.00 |
256 | 1.00 | 1.00 | 1.00 | 1.00 |
512 | 1.00 | 1.00 | 1.00 | 1.00 |
1,024 | 1.00 | 1.00 | 1.00 | 1.00 |
K/CP | 1/4 | 1/8 | 1/16 | 1/32 |
---|---|---|---|---|
128 | 1.00 | 1.00 | - | - |
256 | 1.00 | 1.00 | 1.00 | - |
512 | 1.00 | 1.00 | 1.00 | 0.82 |
1,024 | 1.00 | 1.00 | 0.99 | 0.98 |