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We can now combine both the latency and data throughput requirement into low- and high-end corners on the 2D plane. Low-end use case is clear: LTE legacy 1.4 MHz. High-end, however, has two options: either the highest data of μ = 3, BW = 400 MHz or the shortest deadline μ = 4. We chose the former as the combined high-end due to nonlinear scaling of operations per data point in algorithms. For example, to compute the 4096 inverse discrete Fourier transform (IDFT) used in μ = 3, BW = 400 MHz for a single OFDM symbol, it takes more operations than to compute 2 × 2048 IDFT for two symbols used in μ = 4, BW = 400 MHz, i.e. over the same duration, there are more operations in μ = 3, BW = 400 MHz. The corner cases are presented in Table 1.1, with expression of throughput in other units as well, for a more reader-friendly overview.

Table 1.1. Processing requirement corners as per standard specification

Use Case	Throughput	TTI
					[μs]
Low-end LTE legacy (3GPP 2019a, b)	72	6	6	6	0.2 m	1,000
CA high-end FR2 (3GPP 2019d, f) 4×CA, µ = 3,400MHz	3,168	264	1,056	8,448	10.52	125
MIMO CA high-end FR2 (3GPP 2019d, e, f)8×8, 4×CA, µ = 3,400MHz	3,168	264	8,448	67,584	84.16	125