14
EURASIP Journal on Applied Signal Processing
|
Table 3: The overall tap-solver complexity comparison. | ||
|
Equivalent complex multiplication |
Example | |
|
DMI |
O {( M + NF )( NF )2} |
92928 |
|
CG |
O{ JM [( NF )2 + 5 NF ]} |
43120 |
|
FFT-based |
O {[(N2/2 + 2MN) log2 Lf + (N3 + MN2)]Lf/2} |
5248 |
105
104
103
DMi DMI
→- CG: J = 5
CG:J = 4
■■G- CG: J = 3
—o— FFT-based
Figure 13: Overall tap-solver complexity comparison; algorithm complexity comparison for M = 4, N = 4 tap solver.
Algorithm
Equations
Floating-point
Fixed-point
Architecture
HDL/
Verilog
Mentor graphics
advantage
modelSim
Matlab
C/C ++
Xilinx ISE
Nallatech
gate/netlist
Figure 14: Integrated Catapult C high-level-synthesis design methodology.
which are either another Catapult C design or a legacy IP
core. Leonardo spectrum is invoked for gate-level synthesis.
Xilinx ISE place & route tool is used to generate gate-level
bit-stream file. Raising the language level may lead to con-
cerns about the architecture efficiency, which highly depends
on the design tool’s capability. To address these concerns,
we have compared both the architecture area/time efficiency
and the achieved productivity in [13] with the conventional
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