An Accurate Hardware Sum-of-Cisoids Fading Channel Simulator for Isotropic and Non-Isotropic Mobile Radio Environments

Table 2

Performance comparison of fading channel simulators (Rayleigh fading).

Used elements	Implementation
	[9]	[10]	[Proposed]
Number of sinusoids	32	16	32
Clock. freq. (MHz)	224	50	90
Number of multipliers	1	2 × 16 + 2	6
Number of adders	9	4 × 16 + 2	16
Number of RAMs	4 (32 × 16 bits)	Unknown	4 (𝑁 × WL bits)
Number of ROMs	2 (1024 and 4096 × 16 bits)	𝐷 × 2 × 16 × 16 bits^1	6 (32 × WL bits)
Frequency resolution	Unknown	Unknown	7.63 𝜇Hz
SOS-Based	SOS	SOS	SOC
Isotropic scattering	Yes	Yes	Yes
Non-isotropic and asymmetrical scattering	No	No	Yes

Note: The hardware resources have been deduced from [9, 10] by considering a single Rayleigh process.
¹The symbol 𝐷 is the LUT size, which is not provided in [10].