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http://hdl.handle.net/10553/71249
Title: | Should analogue pre-equalisers be avoided in VLC systems? | Authors: | Li, Xicong Ghassemlooy, Zabih Zvanovec, Stanislav Perez-Jimenez, Rafael Haigh, Paul Anthony |
UNESCO Clasification: | 3325 Tecnología de las telecomunicaciones | Keywords: | Cap. Channel Capacity Equaliser Visible Light Communications (Vlc) |
Issue Date: | 2020 | Journal: | IEEE Photonics Journal | Abstract: | Visible light communication (VLC) systems are highly constrained by the limited 3-dB bandwidth of light-emitting diodes (LEDs). Analogue pre-equalisers have been proposed to extend the LED's bandwidth at the cost of reduced signal-to-noise ratio (SNR). Compared with the pre-equaliser, the multi-carrier modulation with bit-loading can efficiently use the spectrum beyond the LED's raw 3-dB bandwidth without incuring SNR penalties by employing multiple narrow quasi-flat sub-bands to eliminate the need for equalisation. In this work we show by means of theoretical and experimental investigation that VLC with multi-band carrierless amplitude and phase modulation with bit-loading can outperform VLC with analogue pre-equalisers. | URI: | http://hdl.handle.net/10553/71249 | ISSN: | 1943-0655 | DOI: | 10.1109/JPHOT.2020.2966875 | Source: | IEEE Photonics Journal [ISSN 1943-0655], v. 12 (2), p. 1-14 |
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