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Title: Coding of PPM based modulation techniques to improve the performance of infrared WLAN's
Author: Alves, Rui
Gameiro, Atilio
Issue Date: 2000
Publisher: IEEE
Abstract: In this communication we consider the use of PPM based modulation methods, such as the hybrid modulation method called Amplitude and Pulse-Position Modulation (APPM) and Overlapping Pulse-Position Modulation (OPPM), to improve the performance of Infrared WLAN’s. The bandwidth eficiency expressions of these modulation schemes are presented and compared against the one of Pulse-Position Modulation (PPM), which allows to conclude that both APPM and OPPM can be used to improve the performance of PPM without significant bandwidth expansion, using Trellis-Coded Modulation (TCM) codes. We also derive the best codes for some APPM and OPPM schemes, and the results show that non-negligible coding gains without bandwidth expansion can be obtained with trellis codes of moderate complexity.
Peer review: yes
DOI: 10.1109/VETECF.2000.886317
ISSN: 0098-3551
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