2015 Fiscal Year Final Research Report
Study on Transmission-Capacity Limit in Coherent Optical Communication Systems
| Project/Area Number |
25249038
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (A)
|
| Allocation Type | Single-year Grants |
|---|
| Section | 一般 |
|---|
| Research Field |
Electron device/Electronic equipment
|
|---|
| Research Institution | The University of Tokyo |
|---|
Principal Investigator |
Kikuchi Kazuro 東京大学, 工学(系)研究科(研究院), 教授 (50134458)
|
|---|
| Project Period (FY) |
2013-04-01 – 2016-03-31
|
| Keywords | 光ファイバ通信 |
|---|
| Outline of Final Research Achievements |
We introduce the multi-dimensional permutation-modulation format in coherent optical communication systems and analyze its performance in a systematic ｍanner, focusing on the power efficiency and the spectral efficiency. Other than the polarization-switched quadrature phase-shift keying (PS-QPSK) modulation format and the polarization quadrature-amplitude modulation (POL-QAM) format, we find novel 4-dimensional modulation formats which have better trade-off relations between the power efficiency and the spectral efficiency.In addition, we find that we can approach the Shannon limit as the signal dimension is increased.
|
| Free Research Field |
光通信
|
