1. Q I u3 ④ G I add u3 u0 u1 u2 u3 00 u0 u0 d0=1+j ① ② M A P ③ I F T 01
OFDM digital communication WORK SHEET
2009 System Architecture, Fire Tom Wada
We are going to send 8bits by the following OFDM communication system u3 ④
G I add u3 u0 u1 u2 u3 00 u0 u0
d0=1+j ① ②
M A P ③ I F T 01
d1=-1+j u1 u1 10
d2=1-j u2 u2 GI
OFDM u3 u3 11
d3=-1-j I Q 00 01 10 11 u3 ⑤
G I rmv u0 u0
d0=1+j 00 ⑥ F T ⑦
De M A P ⑧ u1 u1
d1=-1+j 01 u2 u2
d2=1-j 10 u3 u3
d3=-1-j 11

2. OFDM digital communication WORK SHEET
HW3
Please draw OFDM symbol complex wave form including GI when you send “ ”.
Please draw OFDM symbol complex wave form including GI when you send “ ”.
Compare those 2 waveform. Then Did you find any problem? If yes, please state the problem.
Effective Symbol I GI
Time Q
Time