Suboptimal Greedy Power Allocation Schemes for Discrete Bit Loading

Table 2

Simulation results for the parametric analysis of the GPA and g-GPA algorithms given in Table 1 for a 1024-subcarrier system and different SNR values.

Algorithm: GPA
SNR	15 dB		25 dB		35 dB
𝐿1	112.5		600.6		621.2
NoO×10^3	235.4		1,238.3		1,280.6
Algorithm: g-GPA
QAM groups	𝑁𝑘	𝐿^𝑘2	𝑁𝑘	𝐿^𝑘2	𝑁𝑘	𝐿^𝑘2
G0	1,024	103.2	946.8	425.1	234.7	140.6
G1	0	0	71.5	23.1	178.2	89.6
G2	0	0	5.7	0.89	293.0	140.2
G3	0	0	0	0	229.5	96.7
G4	0	0	0	0	80.9	27.0
G5	0	0	0	0	7.7	1.55
NoO×10^3 (no order)	213.8		812.2		232.8
NoO×10^3 (order)	108.3		408.5		118.9