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oe1(光电查) - 科学论文

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?? 中文(中国)
  • [IEEE 2019 International Conference on Electrical, Communication, and Computer Engineering (ICECCE) - Swat, Pakistan (2019.7.24-2019.7.25)] 2019 International Conference on Electrical, Communication, and Computer Engineering (ICECCE) - Modeling and Analysis of Novel Tandem Solar Cells

    摘要: While relay-based cooperative networks (widely known in the literature as cooperative communication), where relays only forward signals from the sources to the destination, have been extensively researched, fully cooperative systems have not been thoroughly examined. Unlike relay networks, in a fully cooperative network, each node acts as both a source node sending its own data and a relay forwarding its partner’s data to the destination. Mutual cooperation between neighboring nodes is believed to improve the overall system error performance, especially when space-time codes are incorporated. However, a comprehensive performance analysis of space-time-coded fully cooperative communication from all three perspectives, namely error performance, outage probability, and energy efficiency, is still missing. Answers to the commonly asked questions of whether, in what conditions, and to what extent the space-time-coded fully cooperative communication is better than direct transmission are still unknown. Motivated by this fact and inspired by the increasing popularity of healthcare applications in wireless body area networks (WBANs), this paper derives for the first time a comprehensive performance analysis of a decode-and-forward space-time coded fully cooperative communication network in Rayleigh and Rician fading channels in either identically or non-identically distributed fading scenario. Numerical analysis of error performance, outage probability, and energy efficiency, validated by simulations, show that fully cooperative communication is better than direct transmission from all three aspects in many cases, especially at a low-power and low signal-to-noise ratio regime, which is a typical working condition in WBANs.

    关键词: symbol error rates,energy efficiency,MIMO,space-time codes,Rician,decode-and-forward,outage probability,wireless body area networks,Cooperative communication,Rayleigh

    更新于2025-09-23 15:19:57

  • [IEEE 2019 2nd International Conference on High Voltage Engineering and Power Systems (ICHVEPS) - Denpasar, Bali, Indonesia (2019.10.1-2019.10.4)] 2019 2nd International Conference on High Voltage Engineering and Power Systems (ICHVEPS) - Synchronous Generator Stability Investigation in Power System with High-Penetration Photovoltaics Under Varying Solar Irradiances

    摘要: While relay-based cooperative networks (widely known in the literature as cooperative communication), where relays only forward signals from the sources to the destination, have been extensively researched, fully cooperative systems have not been thoroughly examined. Unlike relay networks, in a fully cooperative network, each node acts as both a source node sending its own data and a relay forwarding its partner’s data to the destination. Mutual cooperation between neighboring nodes is believed to improve the overall system error performance, especially when space-time codes are incorporated. However, a comprehensive performance analysis of space-time-coded fully cooperative communication from all three perspectives, namely error performance, outage probability, and energy efficiency, is still missing. Answers to the commonly asked questions of whether, in what conditions, and to what extent the space-time-coded fully cooperative communication is better than direct transmission are still unknown. Motivated by this fact and inspired by the increasing popularity of healthcare applications in wireless body area networks (WBANs), this paper derives for the first time a comprehensive performance analysis of a decode-and-forward space-time coded fully cooperative communication network in Rayleigh and Rician fading channels in either identically or non-identically distributed fading scenario. Numerical analysis of error performance, outage probability, and energy efficiency, validated by simulations, show that fully cooperative communication is better than direct transmission from all three aspects in many cases, especially at a low-power and low signal-to-noise ratio regime, which is a typical working condition in WBANs.

    关键词: Rayleigh,symbol error rates,MIMO,outage probability,Rician,decode-and-forward,energy efficiency,Cooperative communication,wireless body area networks,space-time codes

    更新于2025-09-19 17:13:59

  • [IEEE 2018 International CET Conference on Control, Communication, and Computing (IC4) - Thiruvananthapuram, India (2018.7.5-2018.7.7)] 2018 International CET Conference on Control, Communication, and Computing (IC4) - Simulation of MIMO System with 2-D and 3-D Optical Orthogonal Codes Using MATLAB and OptiSystem

    摘要: An Optical Orthogonal Code (OOC) is a family of binary codes involving 0s and 1s which is having prede?ned auto correlation function (ACF) and cross correlation functions (CCF). The study of OOCs has an immense application in a ?ber optic code division multiple access (FO-CDMA/ OCDMA). Two dimensional optical orthogonal codes (2-D OOCs) spreads over time and wavelength co-ordinates, while three dimensional optical orthogonal codes (3-D OOCs) spreads over time, wavelength and space co-ordinates, which obviously shows improved performance over 1-D and 2-D OOCs. For a 1-D OOC, if we opt for maintaining good correlation function values, the code length must be a large value as the number of users in the system is more. By adding more dimensions, we can increase the performance parameters, by allowing codewords to be formed with restrictions applied on the occurrence of pulses in each row, resulting in the autocorrelation value (λa) to become zero. This paper aims to simulate the study of 2-D and 3-D OOCs using MATLAB and OptiSystem tools, for implementing a MIMO communication system over ?bre optic channel.

    关键词: Auto-correlation function (ACF),2-D OOC,OptiSystem,Optical Orthogonal Codes,Space-Time Codes,Cross-correlation function (CCF),3-D OOC

    更新于2025-09-11 14:15:04