Table 1 The parameters for MB-OFDM UWB systems in PHY

Modulation

QPSK

Bandwidth

528 MHz

${\sigma }_w^2$

1

ϒ

4

λ

0.5(CM1,CM2,CM3), 0.3(CM4)

N _h

5(CM1,CM2,CM3), 15(CM4)

N _p

12

FFT Size (N)

128

Cyclic Prefix (P)

32

Pilot Spacing (L = i_n+1- i _n , n ∈ [1, N _p ])

8

N_SD: Number of data carriers

100

N_SP: Number of pilot carriers

12

N_SG: Number of guard carriers

10

N_ST: Number of total subcarriers used

122(= N_SD+N_SP+N_SG)

Δ_F: Subcarrier frequency spacing

4.125 MHz(= 528 MHz/128)

T_FFT: IFFT/FFT period

242.42ns(= 1/Δ_F)

T_CP: Cyclic prefix duration

60.61ns(= 32/528 MHz)

T_GI: Guard interval duration

9.47ns(= 5/528 MHz)

T_SYM: Symbol interval

312.5ns(= T_CP+T_FFT+T_GI)