LDPC Decoder with an Adaptive Wordwidth Datapath for Energy and BER Co-Optimization

Table 1

The percentage that 𝛼∈ Threshold Region and 𝛼=±𝑇×𝑆factor condition in 1000 sets of input data for two SNR values. For SNR = 4.4 dB, most blocks converge at iterations >4.

Iteration	𝛼∈ Threshold Region		𝛼=±𝑇×𝑆factor
	3.4 dB	4.4 dB	3.4 dB	4.4 dB
1	95%	90%	90%	86%
2	93%	74%	88%	72%
3	91%	48%	87%	47%
4	89%	—	85%	—
5	87%	—	83%	—
6	86%	—	82%	—
7	85%	—	81%	—