Table 4 End-to-end energy efficiency comparison of SISO B-IFDMA using block size M = 4, and Q = 128 subcarriers per user at two different HPA output power levels versus B-IFDMA using block size M = 1, and Q = 32 subcarriers per user at 6 dBm lower HPA output power level. IFDMA uses 4 times longer blocks. L = 32 in both cases and there are N = 1024 subcarriers in the system.

From: Block Interleaved Frequency Division Multiple Access for Power Efficiency, Robustness, Flexibility, and Scalability