Research Article
A System on a Programmable Chip Architecture for Data-Dependent Superimposed Training Channel Estimation
Table 3
Comparisons between software-only and hardware optimized operations.
| Operation | Implementation | Performance increment | Software only | Hardware accelerated | Cycles | Time [ms] | Cycles | Time [ms] |
| Vector reshape and arithmetic mean | 74824 | 0.75 | 2238 | 0.02 | 37.5x | 1024 points FFT | 1591929 | 15.92 | 56743 | 0.57 | 27.92x | Norm of all the output data from the FFT | 3144061 | 31.44 | 138511 | 1.39 | 22.61x | CFO iterative process | 354248859 | 3.54249 | 319750003 | 3.1975 | 1.1x |
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