利用SRM器件提高OFDM-FSO链路的接收灵敏度

2015 IEEE International Conference on Advanced Networks and Telecommuncations Systems (ANTS) Pub Date : 2015-12-01 DOI:10.1109/ANTS.2015.7413645

Pravindra Kumar, A. Srivastava

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引用次数: 2

摘要

基于正交频分复用(OFDM)的自由空间光链路在湍流信道上具有窄带干扰、高带宽效率和抗衰落鲁棒性等优点。FSO中的多径会导致色散，即线性失真。接收端光电二极管检波器的平方律特性将线性失真转化为非线性失真，导致OFDM-FSO链路的性能下降。为了克服这种非线性失真，采用平方根模块(SRM)器件来保持接收电路的线性化，从而提高OFDM-FSO链路的性能。本文对带SRM和不带SRM器件的OFDMFSO链路的性能进行了分析分析。当BER为10-3时，带SRM器件的OFDM-FSO链路的接收灵敏度比不带SRM器件的OFDM-FSO链路提高了9.8 dB。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Receiver sensitivity improvement of OFDM-FSO link using SRM device

Free space optical (FSO) link based on orthogonal frequency division multiplexing (OFDM) over turbulent channel gives improved performance due to narrow-band interference, high bandwidth efficiency and robustness against fading. The multi-path in FSO can lead to dispersion which is linear distortion. The square-law characteristic of photo diode detector at the receiver side, converts the linear distortion into non-linear distortion resulting in performance degradation of OFDM-FSO link. To overcome this non-linear distortion, the square root module (SRM) device is used for maintaining linearized receiver circuit resulting in performance improvement of OFDM-FSO link. This paper analytically analysis the performance of OFDMFSO link with and with-out SRM device. For BER of 10-3, there is 9.8 dB improvement in receiver sensitivity of OFDM-FSO link with SRM device as compared to OFDM-FSO link without SRM device.

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来源期刊

2015 IEEE International Conference on Advanced Networks and Telecommuncations Systems (ANTS)

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