Semiconductor Integrated Lightsources for DWDM Communications Systems.

DWDM Technology for High Speed Optical Communications

The ever-increasing demand for applications in internet, digital cable TV, e-mail, data transmission etc. has forced the utilization of the available more than two THz transmission bandwidth of single-mode optical fiber at low loss and low dispersion window of 1550 nm. Most of the optical communication systems in use today range from 2.5 Gbit/s, 10 Gbit/s and 40 Gbit/s while 160 Gbit/s and 480 ...

Explorations in Modulation Formats for Nonlinear DWDM Fiber Optic Communications

Canned Lightsources

Complex luminaries and lamp geometries can greatly increase the realism of synthetic images. Unfortunately, the correct rendering of illumination from complex lamps requires costly global illumination algorithms to simulate the indirect illumination reflected or refracted by parts of the lamp. Currently, this simulation has to be repeated for every scene in which a lamp is to be used, and even ...

Modulation and Detection Techniques for Dwdm Systems*

Various binary and non-binary modulation techniques, in conjunction with appropriate detection techniques, are compared in terms of their spectral efficiencies and signal-to-noise ratio requirements, assuming amplified spontaneous emission is the dominant noise source. These include (a) pulse-amplitude modulation with direct detection, (b) differential phase-shift keying with interferometric de...

channel estimation for mimo-ofdm systems

تخمین دقیق مشخصات کانال در سیستم های مخابراتی یک امر مهم محسوب می گردد. این امر به ویژه در کانال های بیسیم با ‏خاصیت فرکانس گزینی و زمان گزینی شدید، چالش بزرگی است. مقالات متعدد پر از روش های مبتکرانه ای برای طراحی و آنالیز ‏الگوریتم های تخمین کانال است که بیشتر آنها از روش های خاصی استفاده می کنند که یا دارای عملکرد خوب با پیچیدگی ‏محاسباتی بالا هستند و یا با عملکرد نه چندان خوب پیچیدگی پایینی...