Title :
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
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);
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2014.2363876
