Fully Pipelined Implementation of Tree-Search Algorithms for Vector Precoding

Table 2

Throughput, area occupation and BER loss with respect to the optimum for the 𝐾-Best applied to MIMO detection and the proposed 𝐾-Best and FSE approaches for VP.

	[16]	[19]	[17]	[22]	[36]	𝐾-Best (proposed)	FSE (proposed)
Systems	4×4; 16-QAM; 𝐾=10	4×4; 16-QAM; 𝐾=5	4×4; 16-QAM; 𝐾=5	4×4; 64-QAM; 𝐾=64	4×4; 64-QAM; 𝐾=64	4×4; 16-QAM; 𝐾=7	4×4; 16-QAM; 𝑛𝑇=10
Throughput (Mbps)	10	53.3	424	75	100	5520	5630
Area (kGE)	52	91	68	1790	1760	1732	374
Mbps/kGE	0.19	0.58	6.23	0.04	0.056	3.18	15.05
BER loss at 20 dB	<0.5 dB	<0.5 dB	~0.75 dB	~0.5 dB	<0.5 dB	0.7 dB	0.3 dB