3G Long Term Evolution Baseband Processing with Application-Specific Processors

Table 3

An example baseband processing chain with 4×4 antennas, 601 subcarriers, 16-QAM, 4808-length turbo code block, list length 𝐾=10, data rate 68 Mbps.

Clk. freq. 𝑓𝑖 (MHz)	Task 𝑖	No. of units 𝑃𝑖	Util. 𝑈𝑖	Delay 𝐷𝑖 (ms)	Area (kGE)	Area ×𝑃𝑖	Power est. (mW)	Power est. ×𝑃𝑖×𝑈𝑖	Tech. (𝜇m)	Ref.
45	FFT	2	0.63	0.045	—	—	480	608.45	0.35	[12]
400	Turbo dec.	5	0.82	0.288	64.1	320.5	—	—	0.065	[28]
80	QR	1	0.54	0.489	—	—	—	—	0.25	[8]
50	LSD	2	0.85	0.060	132	264	—	—	0.13	[23]
Total		10	0.80	0.882		—		—