| 查看: 3495 | 回复: 33 | |||
beiyangxuezi金虫 (小有名气)
|
[交流]
英国华威大学(Warwick)接收光通信和机器学习方向访问学者1-2名已有4人参与
|
|
英国华威大学(University of Warwick) Assistant Professor Dr. Tianhua Xu课题组接收光通信、光网络、机器学习方向访问学者1-2名 Optical networks form an integral part of the world-wide communication infrastructure and nowadays over 95% of all digital data traffic is carried over fibres. Meeting the ever-growing information rate demands has become of utmost importance for optical communication networks. Optical fibre channel is nonlinear, that is, its refractive index, is dependent on signal intensity. At high power densities, the combination of fibre nonlinear effects, dispersion as well as laser phase fluctuation and transceiver noise will lead to nonlinear distortions, limiting both achievable capacities, spectral efficiencies and transmission distances. New research and development is critically required not only for finding new native nonlinear communication techniques but also transferring them into practical, error-resilient networks. 研究方向： 1. Machine learning and Digital signal processing in optical communication networks In optical communication, high performance computing and data center systems, as high-speed and high-order modulated signals are applied, system performance will be significantly degraded by transmission impairments, such as bandwidth limitation, dispersion, polarization dependent loss, channel fading, laser phase noise and nonlinear distortions from optical channels and components. In this project, reconfiguration of optical communication networks and data center systems will be investigated based on digital signal processing and machine learning techniques in conjunction with software-defined transceivers, to compensate for transmission impairments and to realize the optimum detection of optical signals. 2. Information rates and Channel estimation of optical networks In optical communication networks, signals of different users are often multiplexed at different wavelengths, and will interact with each other due to the linear and nonlinear effects in optical channels and devices. Thus it is of importance to develop accurate physical estimation for nonlinear channels and components to assess the achievable capacity and mutual information of optical communication networks. In this research, fundamental limits of optical transparent networks will be studied considering the linear and nonlinear physical impairments in the link, such as chromatic dispersion, polarization mode dispersion, laser phase noise, self-/cross-phase modulation, four-wave mixing, channel memory etc. 3. Optimization in elastic optical networks to maximize the throughputs Based on software-defined transceivers and elastic optical networks, the transmission parameters, e.g. forward error correction (FEC) schemes, modulation formats, frequency separation (in flex-grid networks), optical launch powers and symbol rates etc. will be adapted and tailored to physical channels and components in the transparent wavelength routed networks. In addition, probabilistic shaping and geometric shaping will be applied to optimize the signals to have better tolerance against the degradations. All these degrees of freedom will be jointly optimized in conjunction with the routing of lightpaths through the optical network to maximize the overall capacity and resources. 华威大学University of Warwick has ranked 57th in QS World University Rankings 2018, and consistently ranks in the top 10 of all major rankings of British universities. For more details regarding the application, please contact Dr. Tianhua Xu Email: tianhua.xu@warwick.ac.uk Homepage: https://warwick.ac.uk/fac/sci/eng/staff/tx Studentship webpage: https://warwick.ac.uk/fac/sci/eng/study/pg/pgr/project/TX18 英国华威大学在最新发布的QS2019全球大学排名第54名 https://www.topuniversities.com/ ... rsity-rankings/2019 [ Last edited by beiyangxuezi on 2018-6-7 at 23:59 ] |
回复此楼» 本帖已获得的红花（最新10朵）
» 猜你喜欢
难道我真的要放弃吗？
已经有24人回复
-
请问事业编制和年薪制冲突吗？
已经有13人回复
-
药学硕士找不到工作，打算去做科研助理了
已经有26人回复
-
2025年博士申请，可先做科研助理
已经有8人回复
-
怎么带研究生？
已经有14人回复
-
在国内某高校做全职博士后2年，现在找到新的单位，出站或退站对新工作有什么影响？
已经有8人回复
-
国自然青年基金，1A4B能上会吗？青年和面上的上会标准是一样的吗？
已经有17人回复
-
有机化学迷茫学生
已经有8人回复
-
国产期刊影响因子大于12的有20多个个了
已经有15人回复
-
自然基金变化？？
已经有5人回复
beiyangxuezi
金虫 (小有名气)
- 应助: 0 (幼儿园)
- 金币: 1377.7
- 散金: 227
- 红花: 1
- 帖子: 77
- 在线: 207.7小时
- 虫号: 549463
- 注册: 2008-04-21
- 性别: GG
- 专业: 通信理论与系统
2楼2018-05-18 21:07:19
送红花一朵
 |
3楼2018-05-21 19:15:45
|
|
4楼2018-05-22 20:21:44
|
|
5楼2018-05-23 21:54:16
|
|
6楼2018-05-24 22:03:19
|
|
7楼2018-05-25 20:45:45
|
|
8楼2018-05-26 20:56:56
9楼2018-05-26 22:32:02
10楼2018-05-27 09:43:57
20