
104
Power effiCienCy in wireless CommuniCations
For the DSI-SLM scheme, this value when M = 2 can be given by
T
DSI–SLM
= T
C-SLM
+ 2L = 5MNlogN + 12MN −6N + 2L (4.36)
where M is the number of candidate signals, N is the number of sub-
carriers, and L is the dummy sequence length. In Equation (4.36), the
number of complex additions for applying dummy sequences should
be also considered, which is twice the number of real additions and
is presented by 2L in this equation. To calculate T
DSI-SLM
, we apply
Equation (4.26) with different values of M.
According to Table4.3, the DSI-SLM achieves 76% improvement
in total computational complexity. It can be ...