From: Parameter estimation using the sliding-correlator’s output for wideband propagation channels
Values | |
---|---|
Parameters for SC configuration | |
Type of PN sequence | m-sequence |
Chip rate of PN sequence u(t) | 500 MHz |
Chip rate of PN sequence u ^{′}(t) | 494.62 MHz |
Sliding factor γ | 93 |
Normalized sliding factor γ/L | 3 |
Number L of chips in u(t) | 31 |
Over-sampling rate | 2 |
Repetition times of u(t) in Tx | 93 |
Repetition times of u ^{′}(t) in Rx | 92 |
Time duration T for complete IR | 5.766 μs |
Bandwidth B _{ n } of LPF | \(B_{n}=[-n\frac {f_{c}}{\gamma },n\frac {f_{c}}{\gamma }]\), n=1,2,… |
Fraction ϱ of the SC’s output | ϱ=1/m, m=1,2,… |
Parameters of synthetic paths | |
Delay | Unif. dist. within [20,70] ns |
Doppler frequency | Unif. dist. within [−1×10^{5},1 |
×10^{5}] Hz^{a} | |
Complex attenuation coefficient | Circularly symmetric Gaussian |
random variables with | |
magnitude within the range | |
of \([1\cdot 10^{-6}, \sqrt {2}\cdot 10^{-6}]\) | |
Noise’s properties in synthetic channels | |
Noise spectral height | max([|α _{ ℓ }|;ℓ=1,…,M])· |
10^{−SNR/20} | |
with SNR represented in dB and | |
max([|α _{ ℓ }|;ℓ=1,…,M]) being | |
the maximum of the path | |
magnitudes |