کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7925012 1512500 2018 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Improved m-QAM-OFDM transmission for underwater wireless optical communications
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد مواد الکترونیکی، نوری و مغناطیسی
پیش نمایش صفحه اول مقاله
Improved m-QAM-OFDM transmission for underwater wireless optical communications
چکیده انگلیسی
In this paper, a novel OFDM symbol frame structure was proposed to improve the performance of underwater wireless optical communication (UWOC) systems with m-QAM-OFDM modulation. In the frame, the data-carrying OFDM symbol and corresponding phase-conjugated symbol was interleaved. At the receiver end, by simple superposition of received symbols, the noise suppression can be achieved. The feasibility was experimentally demonstrated by transmitting m-QAM-OFDM signal over a 12.5-m tap water channel and a 1.25-m highly scattering medium which composed of tap water and skimmed milk. The results show that BER performance can be significantly improved in both clear water channel and turbid water channel. Moreover, the proposed frame structure can provide a robust and simple path to compromise between transmission capacity and distance.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Optics Communications - Volume 423, 15 September 2018, Pages 180-185
نویسندگان
, , ,