Research Article
Rate-Adaptive Multiple Access for Uplink Grant-Free Transmission
| Parameters | Values or Assumptions |
| User number | 100 | Activation probability | 0.002 : 0.002 : 0.06 | Waveform | OFDM | Average received SNR | Uniformly distributed in dB | Small scale channel model | Rayleigh fading, with correlation coefficients, equals 0.2, 0.5, and 0.8 | Transmission mode | TM 1 (SISO) | Length of information bits | 1024 | Channel coding | 1/3 rate Turbo | Modulation of conv-GF | QPSK | Modulation of RAMA | Use Figure 8(a) with | Channel estimation | Ideal | Receiver | MMSE-SIC |
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