When Δ=1 dB and r = 7, the Simplified model yields the
same expected throughput as setting r = m in the Simplified
Model. Although the achieved expected throughput is not the
maximum for the Simplified Model with r = m, it is only at
most 8 bits less as shown in Figure 2–5. Thus, we have shown
here that with Δ and r set appropriately (i.e., 1 dB and 7, respectively),
an expected throughput that is very close to the
maximum can be achieved using the Simplified Model.