Demonstration of Real-Time CAP Transceivers with Hybrid Digital Equalization for Visible Light Communication

Mao, Yanfeng; Jin, Xianqing; Liu, Weijie; Gong, Chen; Xu, Zhengyuan

doi:10.1364/acpc.2017.m1g.4

Cited by 3 publications

(1 citation statement)

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“…In this work, we expand on the reports in [6,9] by developing and experimentally demonstrating a CAP system in RT. In terms of CAP, there have been two reports in the literature [12,13], both of which do not test basis functions beyond the SRRC. Thus, we experimentally test our RT system to verify the BER results shown in [9] in RT, with a slight penalty related to the synchronisation of the signal.…”

Section: Introductionmentioning

confidence: 99%

Real Time Implementation of CAP Modulation With “Better-Than-Nyquist” Pulse Shaping in Visible Light Communications

Haigh

Darwazeh

2020

IEEE Commun. Lett.

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In this paper we experimentally verify a realtime implementation of the 'better-than-Nyquist' pulse shape in carrier-less amplitude and phase (CAP) modulation in the context of a visible light communications system. We use two National Instruments universal software radio peripherals (USRPs) as a transmitter and receiver working independently. Previously reported experimental work on pulse shaping in CAP is also verified in real time, showing lower error vector magnitudes (EVM) can be obtained at shorter filter lengths using the betterthan-Nyquist pulses in place of the conventionally used squareroot raised cosine as the basis function of the signal. We show that a real time EVM penalty is an additional 3% EVM in the worst case and is a result of synchronisation offset at the receiver.

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