표 1. | Table 1. 시뮬레이션 환경 | Simulation environment.

Parameters Values
Symbol type QPSK or 4-QAM
Modulation 2M-OFDM-DIM
2M-OFDM-CDIM
4M-OFDM-DIM
4M-OFDM-CDIM
# of subcarriers 1,024
CP length 256
Channel 256-taps random Rayleigh channel
Constraint length(CL) 3, 7
Code rate for indexing bits 1/2
Code rate of total system 2M-OFDM-CDIM : 5/6
4M-OFDM-CDIM : 3/4
Efficiency 2M-OFDM-DIM : 3 bits/Hz
2M-OFDM-CDIM : 2.5 bits/Hz
4M-OFDM-DIM : 4 bits/Hz
4M-OFDM-CDIM : 3 bits/Hz