Table 1 Complexity in numbers of operations for MMSE and MMSE-SA.
From: Performance-Driven Symbol Mapping for Downlink and Point-to-Point MIMO Systems
| MMSE | No. of operations | MMSE-SA | No. of operations | ||
|---|---|---|---|---|---|
| (1) |
construct 
|
| (1) |
construct 
|
|
| (2) |
invert 
|
| (2) |
invert 
|
|
| (3) |
multiply  with 
|
| (3) |
multiply  with 
|
|
| (4) |
multiply with 
|
| (4) |
multiply with 
|
|
| (5) | calculate scaling factor |
| (5) | calculate scaling factor |
|
| (6) |
choose optimum 
|
| |||
| Total |
| Total |
| ||