This paper investigates the architecture of Tbits/s Wavelength Division Multiplexing (WDM) system by using a Coherent Optical Orthogonal Frequency Division Multiplexing (CO-OFDM) with 4-QAM for long haul transmissions of 1800 Km SM. A simulation of 20 WDM channels spaced at 50 GHz, and 20 OFDM signals each with 50 Gbits/s bitrate to produce data rate of 1 Tbits/s is built. The system performanc...

In this paper, we analyze the fundamental tradeoff of diversity and multiplexing in multi-input multi-output (MIMO) channels with imperfect channel state information at the transmitter (CSIT). We show that with imperfect CSIT, a higher diversity gain as well as a more efficient diversity-multiplexing tradeoff (DMT) can be achieved. In the case of multi-input single-output (MISO)/single-input mu...

In this project, I have studied the performance gain of MIMO systems. There are two types of gain provided by the MIMO channels: one measures the increase of the capacity by the number of degrees of freedom of the channel (spatial multiplexing gain), and the other improvement of the reliability by the diversity gain. Most of previous works focus on either one of these two types of gain by desig...

The Simon task is used to study interference from irrelevant spatial information. Interference is manifested by longer reaction times when the required response -based on non-spatial features- is spatially incompatible with stimulus position. Interference is greater when incompatible trials are preceded by compatible trials (compatible-incompatible sequence) than when they are preceded by incom...

In the framework of the European Space Agency Climate Change Initiative, a global, almost daily, soil moisture (SM) product is being developed from passive and active satellite microwave sensors, at a coarse spatial resolution. This study contributes to its validation by using finer spatial resolution ASAR Wide Swath and in situ soil moisture data taken over three sites in Ireland, from 2007 to...

In this contribution, performance analysis on MIMO spatial modulation (SM) with low-density parity-check coding (LDPC) is developed. Specific coding rate is combined with different spatial modulation order; as a result, a framework including performance, complexity, attainable diversity order trade-off for spatial modulation technique based on simulation results is provided and compared with co...

ABSTRACT– Spatial Modulation (SM) provides many advantages when compared to other conventional Multiple Input Multiple Output (MIMO) schemes in which multiple antenna transmit simultaneously. In SM only one antenna will be active during data transmission. This completely eliminates Inter Channel Interference (ICI) and reduces decoding complexity. In other coding techniques coding and modulation...

We demonstrate how a narrowband pump and broadband spectrum can be spatially multiplexed by selective coupling them in two distinct modes of few-mode microstructure fiber. The first mode carries most the input energy, experiences spectral broadening. Whereas second preserves narrow bandwidth remaining part pump. Bimodal propagation, with power unbalance strongly favor fundamental mode, is natur...

To accurately predict atherosclerotic plaque progression, a detailed phenotype of the lesion at the molecular level is required. Here, we assess the respective merits and limitations of molecular imaging tools. Clinical imaging includes contrast-enhanced ultrasound, an inexpensive and non-toxic technique but with poor sensitivity. CT benefits from high spatial resolution but poor sensitivity co...