Table 7 Achieved reduction values in terms of number of operations, read/write access memory for considering “3 IDem _1 EIDec ” rather than “6IDec” for different modulation schemes, code rates and no erasure events
From: Complexity adaptive iterative receiver performing TBICM-ID-SSD
Modulation scheme | CASE1 (with recomputed Euclidean distances) | CASE2 (with stored Euclidean distances) | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
R c =1/2 | R c =6/7 | R c =1/2 | R c =6/7 | |||||||||
Arith | Load | Store | Arith | Load | Store | Arith | Load | Store | Arith | Load | Store | |
QPSK | 13.5% | 16.8% | 28.6% | 21.4% | 23.5% | 30.6% | 28% | 14% | 19.1% | 30.1% | 21.8% | 25% |
QAM16 | −15.6% | 9.3% | 28.6% | 2.7% | 18.9% | 30.6% | 10.7% | −3.5% | 9.5% | 19.2% | 11.2% | 19.3% |
QAM64 | −89.5% | −22.9% | 28.6% | −50.9% | −1.5% | 30.6% | −35.8% | −58.6% | −22.3% | −14% | −23.7% | 0.6% |
QAM256 | −207.4% | −108.4% | 28.6% | −158.5% | −62.3% | 30.6% | −117.9% | −195.6% | −124.1% | −87.2% | −121.1% | −59.3% |