Receiver Design for PAM-DMT in Indoor Optical Wireless Links

Author

Nuo Huang ; Jun-Bo Wang ; Jiangzhou Wang ; Cunhua Pan ; Houyu Wang ; Ming Chen

Author_Institution

Nat. Mobile Commun. Res. Lab., Southeast Univ., Nanjing, China

Volume

27

Issue

2

fYear

2015

fDate

Jan.15, 15 2015

Firstpage

161

Lastpage

164

Abstract

In the conventional receiver for pulse-amplitude-modulated discrete multitone (PAM-DMT), the real parts of the subcarriers are distorted by the clipping noise and ignored in detection. In this letter, the signal analysis shows that the real parts of the subcarriers also contain the information of the transmitted signal. An iterative receiver is then proposed to improve the transmission performance of PAM-DMT by exploiting both the real and imaginary parts of the subcarriers. Simulation results show that the proposed iterative receiver can significantly improve the transmission performance of PAM-DMT systems.

Keywords

indoor communication; optical links; optical receivers; pulse amplitude modulation; PAM-DMT systems; clipping noise; indoor optical wireless links; iterative receiver; pulse-amplitude-modulated discrete multitone; receiver design; subcarriers; transmission performance; transmitted signal; OFDM; Optical distortion; Optical imaging; Optical receivers; Optical transmitters; Wireless communication; Optical wireless communication (OWC); intensity-modulated and direct-detection (IM/DD); orthogonal frequency-division multiplexing (OFDM); pulse-amplitudemodulated discrete multitone (PAM-DMT);

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2014.2363876

Filename

6930738