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Table 2 Measurement parameters of WIT

From: Superposition of rectangular power pulses and CP-OFDM signal for SWIPT

Power signal parameters used at transmitter
Carrier frequency 2 GHz
Sampling frequency 2 MHz
Sampling period Ts 0.5 μs
Cyclic prefix size \(L_{\text{cp}}\) 36 samples
Gain of power signal \(G_{P,Tx}\) 0 : 31.5 dB
Rectangular offset \(L_{\text{o}}\) (when fixed) 6 samples
Rectangular width \(W_{\text{p}}\) (when fixed) 20 samples
Amplitude \(V_{\text{p}}\) 10 x \(V_i\)
Ratio of amplitude Ar 20.73 dB
Information signal parameters used at transmitter and receiver
Carrier frequency 2 GHz
Actual sampling rate 20 MHz
Oversampling factor 10
Sampling frequency 2 MHz
Bandwidth 1.980 MHz
Intermediate frequency 6 MHz
Modulation QPSK
Sub-carrier spacing \(\Delta _f\) 3.90625 kHz
Number of subcarriers N 512
Number of inactive subcarriers 5
Sampling period Ts 0.5 μs
Useful symbol duration N (T) 512 samples (256 μs)
Cyclic prefix duration \(L_{\text{cp}}\) (\(T_{\text{cp}}\)) 36 samples (18 μs)
Training sequence type IEEE 802.11a short
Training sequence size 160 samples
Pulse shape parameters Raised Cosine
Information signal parameters used at transmitter only
Gain of information signal \(G_{I,Tx}\) 6 dB
Number of bits transmitted 1024
Information signal parameters used at receiver only
Case I distance d 3 m
Case II distance d 4 m
Synchronization method OFDM synchronization
Symbol timing recovery method Max energy
Frame detection method Self reference w/power norm.