Devi Chadha

  • Citations Per Year
Learn More
We have investigated the performance and reliability improvement of cooperative free-space optical (FSO) communication over single input single output (SISO) system in this paper. The bit error rate (BER) analysis with quadrature phase shift keying (QPSK), gamma–gamma channel model and pointing error has been demonstrated for SISO and cooperative system.(More)
In this paper, we present the performance analysis of spatially multiplexed Multiple-Input Multiple-Output Orthogonal Frequency Division Multiplexing (MIMO-OFDM) Free Space Optical Communication system over turbulence induced fading channels MIMO is used with OFDM to enhance the performance and the capacity of the FSO system. The use of spatial multiplexing(More)
In wireless communication Free Space Optical (FSO) communication is an emerging technology to provide high bandwidth and high quality communication. In this work we have evaluated the capacity of the Free Space Optical communication system with Multiple Input Multiple Output (MIMO) Orthogonal Frequency Division Multiplexing (OFDM) technique under strong(More)
The Augmented Data Vortex switch has been proposed in our earlier publications as a high capacity, high throughput, and low-latency all optical packet switched interconnection network for optical switching that can overcome major challenges of all optical packet switching [1, 2]. Recently there has been much analysis and comparison of optical multistage(More)
In this paper, the performance improvement of a free space optical communication system with multi-hop and beam optimization has been studied. Novel closed-form expressions for the end-to-end average bit error rate, outage probability and average capacity of multi-hop free space communication system with decode-and-forward relaying are derived. Beam(More)
Reliability and fault tolerant capability are the important factors for very large size interconnection networks. In this paper, we propose a more fault tolerant 4×4 data vortex switch fabric. Also, we analyse fault tolerance and network reliability of the novel architecture.