| Presentation | 2001/11/30 Demodulation of Analog Signals Using Frequency Region Tsuneya WATANABE, Katsumi SUGIYAMA, Shunichiro EGAMI, |
|---|---|
| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | A new method of AM and FM demodulation based on short time FFT and IFFT are proposed. The complex carriers of AM and FM signals are easily extracted by finding peak values in the frequency region. In case of AM signals, demodulated signal is obtained by convolution with carrier frequency samples. In case of FM signals, after convolution by the extracted carrier, complex signals are represented by q(t). Then, demodulated signals are obtained by calculating [dq(t)/dt]/q(t)in time domain. Differentiation is performed by multiplying j2 π f in the frequency region and dq(t)/dt and q(t)are obtained by IFFT. By these methods in the frequency region, demodulations of analog signals are easily performed without limit of PLL capture range. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | FFT / DSP / Digital Signal Processing / Analog Modulation / Analog Signal / Short Time FFT / AM / FM / Modulation |
| Paper # | SAT 2001-77 |
| Date of Issue |
| Conference Information | |
| Committee | SAT |
|---|---|
| Conference Date | 2001/11/30(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | |
| Vice Chair | |
| Secretary | |
| Assistant | |
| Paper Information | |
| Registration To | Satellite Telecommunications (SAT) |
|---|---|
| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Demodulation of Analog Signals Using Frequency Region |
| Sub Title (in English) | |
| Keyword(1) | FFT |
| Keyword(2) | DSP |
| Keyword(3) | Digital Signal Processing |
| Keyword(4) | Analog Modulation |
| Keyword(5) | Analog Signal |
| Keyword(6) | Short Time FFT |
| Keyword(7) | AM |
| Keyword(8) | FM |
| Keyword(9) | Modulation |
| 1st Author's Name | Tsuneya WATANABE |
| 1st Author's Affiliation | Graduate School of Electronic Science and Technology, Shizuoka University() |
| 2nd Author's Name | Katsumi SUGIYAMA |
| 2nd Author's Affiliation | Graduate School of Electronic Science and Technology, Shizuoka University |
| 3rd Author's Name | Shunichiro EGAMI |
| 3rd Author's Affiliation | Graduate School of Electronic Science and Technology, Shizuoka University |
| Date | 2001/11/30 |
| Paper # | SAT 2001-77 |
| Volume (vol) | vol.101 |
| Number (no) | 487 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |