Design of Simplified Maximum-Likelihood Receivers for Multiuser CPM Systems

Table 1

Comparison and performance analysis of some MSK-based receivers.

Transmitter	𝐾	Δ𝑓	Number of effective filters 𝑁𝐸		LD front end	Energy loss	Complexity reduction
			{𝑠(𝑡,𝐚)}	{𝑠𝑅(𝑡,𝐚)}
Binary CPM 2REC	1	0.00	3	2	2	0.010	2-fold
	2	0.00	3	2	4	0.015	4-fold
		0.25	4	3		0.086	4-fold
		0.5	4	3		0.100	4-fold
		0.00	3	2	10	0.021	32-fold
	5	0.25	6	5		0.098	32-fold
		0.5	8	6		0.026	32-fold
Binary CPM 2RC	1	0.00	3	2	2	0.002	2-fold
	2	0.00	4	2	4	0.002	4-fold
		0.25	5	3		0.058	4-fold
		0.5	5	3		0.098	4-fold
	5	0.00	4	2	10	0.003	32-fold
		0.25	8	5		0.101	32-fold
		0.5	9	6		0.031	32-fold