کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5449680 | 1512536 | 2017 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Real-time optical OFDM transmissions with spectral efficiency up to 6.93Â bit/s/Hz over 50Â km SSMF IMDD systems
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
مواد الکترونیکی، نوری و مغناطیسی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Real-time optical OFDM transmissions based on FPGA with 6.93Â bit/s/Hz spectral efficiency by using simple directly modulated DFB laser and DAC/ADC with sampling rate as low as 2GS/s without inline amplifier are experimentally demonstrated. 7.09-Gb/s OFDM signals with subcarrier modulation format up to 512-QAM can be successfully transmitted over 50-km SSMF with adopted HD-FEC (3.8Ã10â3). The robustness of system performance is also extensively explored to determine the tolerance to DAC/ADC resolution mismatch. It is shown that aggregate system capacity can be maintained almost constant for DAC/ADC resolution mismatch as large as 3bits due to the utilization of adaptive bit and power loading scheme. On the other hand, for a certain system configuration and an expected signal line rate, it also gives a reference minimum DAC/ADC boundary for practical deployment.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Optics Communications - Volume 387, 15 March 2017, Pages 12-17
Journal: Optics Communications - Volume 387, 15 March 2017, Pages 12-17
نویسندگان
Qianwu Zhang, Min Liu, Jian Chen, Han Dun, Junjie Zhang, Yingchun Li, Yingxiong Song, Min Wang,