云安全和隐私对数据存储的影响

Abdulwahab Alkharashi
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引用次数: 3

摘要

L二极管(LED)器件被广泛应用于照明和通信系统。led作为通信发射器的使用正在不断发展,可见光通信(VLC)很可能会在未来的无线系统中提供额外的数据传输能力。目前用于照明的器件受到码间干扰(ISI)的困扰。为了减少码间干扰,在发送端采用自适应FIR滤波器(自适应均衡器滤波器),在接收端采用上升余弦滤波器(RCC)。为了找到FIR滤波器的最优系数,使用了先前的信道信息和离线自适应算法。利用Simulink和MATLAB对所提出的自适应FIR进行了验证。为了仿真目的,FIR滤波器结构设计为4抽头。为了兼容性和灵活性,信道脉冲响应是随机选择的。将VLC系统的误码率(BER)性能以及数据速率和距离等其他指标与不使用均衡器电路的结果进行了比较。它清楚地显示了使用预均衡器FIR滤波器在提高系统性能方面的优势。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Cloud security and privacy impacts in data storage
L diode (LED) devices are being used in a wide range of applications for both illumination and as a communication system. The use of LEDs as emitters for communications is evolving and it is likely that visible light communications (VLC) will provide extra data transmission capacity in the future wireless systems. At present devices used for illumination suffers from inter symbol interference (ISI). To reduce the inter symbol interference an adaptive FIR filter (an adaptive equalizer filter) is placed in the transmitter side and a raised cosine filter (RCC) is introduced in the receiver circuit. To find the optimal coefficients for the FIR filter, previous channel information and off-line adaptive algorithm is used. The proposed adaptive FIR was verified using Simulink and MATLAB. The FIR filter structure is designed with 4-tap for the simulation purpose. For compatibility and flexibility, the channel impulse response is randomly selected. The bit error rate (BER) performance of the VLC system together with other measures such as data rate and distance were compared with the results obtained without the use of equalizer circuits. It clearly shows an advantage of using the preequalizer FIR filter in improving the system performance.
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