Carrier-less amplitude and phase modulated visible light communication system based on a constellati

来源 :Chinese Optics Letters | 被引量 : 0次 | 上传用户:elfer_hfut
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
In this Letter,we propose a novel constellation-shaping carrier-less amplitude and phase(CAP) modulation scheme to alleviate the systematic nonlinearity in visible light communication(VLC) systems.A simple geometric transformation shaping method is employed to convert the normal square lattice constellation into multiple circular constellations.The feasibility and performance are investigated and experimentally demonstrated by a 1.25 Gb/s CAP-modulated VLC system.The results indicate that the circular constellation has better resistance to systematic nonlinearity compared with a rectangular constellation.The dynamic range of input signal peak-to-peak values promotes 20% at a low bias voltage nonlinear area and 50% at a high bias voltage nonlinear area.To the best of our knowledge,this is the first time constellation-shaping CAP has ever been reported in indoor high data rate VLC systems. In this Letter, we propose a novel constellation-shaping carrier-less amplitude and phase (CAP) modulation scheme to alleviate the systematic nonlinearity in visible light communication (VLC) systems. A simple geometric transformation shaping method is employed to convert the normal square lattice constellation into multiple circular constellations. The feasibility and performance are investigated and experimentally demonstrated demonstrated by a 1.25 Gb / s CAP-modulated VLC system. The results indicate that the circular constellation has better resistance to systematic nonlinearity compared with a rectangular constellation. dynamic range of input signal peak-to-peak values ​​promotes 20% at a low bias voltage nonlinear area and 50% at a high bias voltage nonlinear area. To the best of our knowledge, this is the first time constellation-shaping CAP has ever been reported in indoor high data rate VLC systems.
其他文献
提高苹果品质的技术措施1施足化肥,增施有机肥秋季采果后,结合深翻扩穴,施入有机肥,以猪圈粪、羊粪、鸡粪、人粪尿为主,成龄园667m2施腐熟圈粪5000kg,以改良土壤的理化性状,增加土壤有机质含量,使
月光耀屋檐,  君心冷如霜。  瑶琴噎无言,  愁容对春光。  草木失颜色,  鸟兽长太息。  深林寂无声,  万物掩面泣。  造化之咏者,  终识世幽暗?  宿命催肠断!  晨光初照临,  急欲窥妇面,  回望已成烟。
5.3亿年前的海洋中,最凶猛的捕食者莫过于奇虾了。它有一对带柄的巨眼,一对分节的用于快速捕捉猎物的巨型前肢,美丽的大尾扇和一对长长的尾叉。它虽 The most ferocious pre
我国特产中华猕猴桃汁在模拟胃液的条件下,能阻断N-亚硝基吗啉的形成。在37℃,pH3.13-3.28,吗啉及亚硝酸钠浓度各为2.0mM,经0.5、1.0及2.0小时,其阻断率分别为98.54%,96.43%及9
一.内分泌腺和激素动物有机体和人体内有许多器官,这些器官都各具有其单独的功能,如心脏跳动可以输送血液到全身,胃肠消化道专司消化的功能,肾脏专司排泄的功能;但是有机体
人的急性放射性损伤除众所周知的广岛、长畸原子弹爆炸的受害者外,根据文献报道截至1979年为止,世界各地所发生的放射性事故约有400余例。据不完全统计,1945~1979年较大的事