Duobinary Modulation for Visible Light Communications
Duobinary Modulation for Visible Light Communications
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DOI：
10.1109/eucnc.2019.8801992
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发表时间：
2019-06
期刊：
影响因子：
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通讯作者：
P. Chvojka;P. Haigh;I. Darwazeh;Zabih Ghassemlooy;S. Zvánovec
中科院分区：
文献类型：
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作者：
P. Chvojka;P. Haigh;I. Darwazeh;Zabih Ghassemlooy;S. Zvánovec
本文提出并实验研究了高带宽限制VLC系统的双二进制传输技术的性能。通过使用脉冲整形滤波器，在传输信号中加入可控量的符号间干扰（ISI），可以在相同的信号带宽内将数据速率提高一倍。为了全面了解二进制信号，还测试了所谓的修改二进制方案。两种系统的误码率（BER）性能在一定的数据速率范围内进行测量，并与理想二进制和传统的开关键控不归零（OOK-NRZ）格式的误码率（BER）进行比较，在同一物理链路上。我们证明了该双二进制系统可以支持比OOK-NRZ更高的比特率和更低的误码率，而所需的带宽只有二进制方案的一半。
The paper proposes and experimentally investigates the performance of the duobinary transmission technique for a highly bandlimited VLC system. By adding a controlled amount of inter-symbol interference (ISI) into the transmitted signals through the use of pulse shaping filters, data rate can be doubled within the same signal bandwidth. To gain full insight into duobinary signalling, the so-called modified binary scheme is also tested. Bit error rate (BER) performance of both systems is measured for a range of data rates and compared to BERs for ideal binary and traditional on-off keying non-return to zero (OOK-NRZ) formats, across the same physical link. We show the duobinary system can support higher bit rates and lower BER than OOK-NRZ while requiring half the bandwidth of the binary scheme.