Research Article
A New High-Performance Digital FM Modulator and Demodulator for Software-Defined Radio and Its FPGA Implementation
Table 5
Comparison result for DDFS.
| Reference | Ours (pipelined) | Xilinx core [35] | CORDIC [36] | Nicholas [37] | [38] | [39] |
| Output SFDR | −64.3 dBc | N/A | −90.3 dBc | −90.3 dBc | N/a | −95.2 dBc | | 18, 10, 8 | 30, 10, 14 | 32, 15, 14 | 32, 15, 14 | 16, N/A, N/A | 32, 15, 14 | Area | 75 Slices | 212 Slices | 440 Slices | 101 Slices | 248 CLBs | 101 Slices | Frequency | 334.5 MHz | 72 MHz | 113 MHz | 121 MHz | 62.1 MHz | 121 MHz | BRAMs | 0 | 0 | 0 | 2 | 0 | 2 | Device | XC2VP 30-7 | N/A | XCV 300-4 | XCV 300-4 | XC 4020xl | XCV 300-4 |
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*where is the accumulator length, is the word length of truncated phase, and is the word length of DDFS output.
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