室內(nèi)可見光MIMO通信碼間干擾分析與接收視場角優(yōu)化
發(fā)布時間:2019-01-05 04:31
【摘要】:針對可見光MIMO通信過程中多徑時延造成的碼間干擾對可見光通信系統(tǒng)性能影響問題,采用光線追蹤分析方法建立了室內(nèi)系統(tǒng)模型及碼間干擾模型,討論了多輸入多輸出的室內(nèi)通信環(huán)境下,不同LED布局下光學天線視場角大小對系統(tǒng)碼間干擾及誤碼率的影響.研究結(jié)果表明:當數(shù)據(jù)傳輸速率為100Mbit/s時,存在一種LED布局使整個接收平面能滿足基本通信所要求的10~(-6)誤碼率閾值.在此結(jié)構(gòu)的基礎(chǔ)上分析可知,隨著視場角的逐漸增大,接收平面的盲區(qū)會逐漸消失,但系統(tǒng)碼間干擾會隨之增加.在接收機視場角為43°時,平均信噪比最大并能達到室內(nèi)最佳覆蓋,此時能有效減小多徑效應(yīng)及碼間干擾并提高系統(tǒng)傳輸性能.
[Abstract]:Aiming at the influence of inter-symbol interference caused by multi-path delay in visible MIMO communication on the performance of visible light communication system, the indoor system model and inter-symbol interference model are established by ray tracing analysis method. The influence of the field of view angle of the optical antenna on the inter-symbol interference (ISI) and bit error rate (BER) of the system under the multi-input and multi-output indoor communication environment with different LED configurations is discussed. The results show that when the data transmission rate is 100Mbit/s, there is a LED layout which enables the whole receiving plane to meet the 10 ~ (-6) bit error rate threshold required by the basic communication. Based on the analysis of the structure, the blind area of the receiving plane will disappear gradually with the increasing of the field of view angle, but the system inter-symbol interference will increase. When the field of view angle of the receiver is 43 擄, the average signal-to-noise ratio (SNR) is maximum and the optimal indoor coverage can be achieved, which can effectively reduce the multipath effect and inter-symbol interference (ISI) and improve the transmission performance of the system.
【作者單位】: 中南民族大學電子信息工程學院智能無線通信湖北省重點實驗室;
【基金】:國家自然科學基金資助項目(61002013、11147014) 湖北省自然科學基金資助項目(2014CFA051)
【分類號】:TN919.3;TN929.1
本文編號:2401271
[Abstract]:Aiming at the influence of inter-symbol interference caused by multi-path delay in visible MIMO communication on the performance of visible light communication system, the indoor system model and inter-symbol interference model are established by ray tracing analysis method. The influence of the field of view angle of the optical antenna on the inter-symbol interference (ISI) and bit error rate (BER) of the system under the multi-input and multi-output indoor communication environment with different LED configurations is discussed. The results show that when the data transmission rate is 100Mbit/s, there is a LED layout which enables the whole receiving plane to meet the 10 ~ (-6) bit error rate threshold required by the basic communication. Based on the analysis of the structure, the blind area of the receiving plane will disappear gradually with the increasing of the field of view angle, but the system inter-symbol interference will increase. When the field of view angle of the receiver is 43 擄, the average signal-to-noise ratio (SNR) is maximum and the optimal indoor coverage can be achieved, which can effectively reduce the multipath effect and inter-symbol interference (ISI) and improve the transmission performance of the system.
【作者單位】: 中南民族大學電子信息工程學院智能無線通信湖北省重點實驗室;
【基金】:國家自然科學基金資助項目(61002013、11147014) 湖北省自然科學基金資助項目(2014CFA051)
【分類號】:TN919.3;TN929.1
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