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Channel Estimation for Realistic Indoor Optical Wireless Communication in ACO-OFDM Systems

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Date
2018
Author
Özmen, Atilla
Şenol, Habib
Abstract
In this paper channel estimation problem in a visible light communication system is considered. The information data is transmitted using asymmetrical clipped optical orthogonal frequency division multiplexing. Channel estimation and symbol detection are performed by the Maximum Likelihood and the Linear Minimum Mean Square Error detection techniques respectively. The system performance is investigated in realistic environment that is simulated using an indoor channel model. Two different channels are produced using the indoor channel model. Symbol error rate (SER) performance of the system with estimated channels is presented for QPSK and 16-QAM digital modulation types and compared with the perfect channel state information. As a mean square error (MSE) performance benchmark for the channel estimator Cramer-Rao lower bound is also derived. MSE and SER performances of the simulation results are presented.

Source

Wireless Personal Communications

Issue

1

Volume

102

Pages

247-259

URI

https://hdl.handle.net/20.500.12469/870
https://doi.org/10.1007/s11277-018-5837-8

Collections

  • Araştırma Çıktıları / Scopus [1565]
  • Araştırma Çıktıları / WOS [1518]
  • Bilgisayar Mühendisliği / Computer Engineering [188]
  • Elektrik-Elektronik Mühendisliği / Electrical - Electronics Engineering [321]

Keywords

Channel estimation
OFDM
Visible light
ACO

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