| Presentation | 2018-10-19 Optimization of signal amplitudes for dynamic range of analog-to-digital convertor in digital coherent reception of ultra-high QAM optical signals Yasuhiro Kawabata, Koji Igarashi, |
|---|---|
| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | In the digital coherent reception of ultra-high quadrature amplitude modulation (QAM) optical signals, the received amplitudes in the digital domain could be impaired with the bit resolution and the amplitude operation range of an analogue-to-digital convertor (ADC), which is typically used in digital coherent reception. For the quantization errors due to the bit resolution, it is preferable to make the amplitude of the electrical received signals large. On contrary, the amplitude of the received signals impaired with optical noise could be across the ADC operation range, and then it would be clipped. There is the trade-off relationship between the quantization errors and the clipped errors, and then it is essential to optimize the signal amplitude for the bit resolution and the amplitude operation range, namely ADC dynamic range. In this paper, we numerically evaluate the bit-error ratio (BER) performance of 64QAM optical signals when the signal amplitude before ADC is optimized for the dynamic range of the ADC in coherent reception. We calculate the dependence of the required bit resolution on the sampling rate. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Quadrature amplitude modulation / Analog-to-digital conversion / Digital signal processing |
| Paper # | OCS2018-45,OPE2018-81,LQE2018-70 |
| Date of Issue | 2018-10-11 (OCS, OPE, LQE) |
| Conference Information | |
| Committee | OPE / LQE / OCS |
|---|---|
| Conference Date | 2018/10/18(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | Kouki Sato(Furukawa Electric Industries) / Kiichi Hamamoto(Kyusyu Univ.) / Itsuro Morita(KDDI Research) |
| Vice Chair | Hiroshi Takahashi(Sophia Univ.) / Hiroshi Aruga(Mitsubishi Electric) |
| Secretary | Hiroshi Takahashi(Univ. of Tokyo) / Hiroshi Aruga(NICT) / (SEI) |
| Assistant | Yuya Shoji(Tokyo Inst. of Tech.) / Kazunori Seno(NTT) / Masaya Nagai(Osaka Univ.) |
| Paper Information | |
| Registration To | Technical Committee on OptoElectronics / Technical Committee on Lasers and Quantum Electronics / Technical Committee on Optical Communication Systems |
|---|---|
| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Optimization of signal amplitudes for dynamic range of analog-to-digital convertor in digital coherent reception of ultra-high QAM optical signals |
| Sub Title (in English) | |
| Keyword(1) | Quadrature amplitude modulation |
| Keyword(2) | Analog-to-digital conversion |
| Keyword(3) | Digital signal processing |
| 1st Author's Name | Yasuhiro Kawabata |
| 1st Author's Affiliation | Osaka University(Osaka Univ.) |
| 2nd Author's Name | Koji Igarashi |
| 2nd Author's Affiliation | Osaka University(Osaka Univ.) |
| Date | 2018-10-19 |
| Paper # | OCS2018-45,OPE2018-81,LQE2018-70 |
| Volume (vol) | vol.118 |
| Number (no) | OCS-251,OPE-252,LQE-253 |
| Page | pp.pp.93-97(OCS), pp.93-97(OPE), pp.93-97(LQE), |
| #Pages | 5 |
| Date of Issue | 2018-10-11 (OCS, OPE, LQE) |