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 Coding of PPM based modulation techniques to improve the performance of infrared WLAN's
Please use this identifier to cite or link to this item http://hdl.handle.net/10773/7659

title: Coding of PPM based modulation techniques to improve the performance of infrared WLAN's
authors: 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.
URI: http://hdl.handle.net/10773/7659
ISSN: 0098-3551
publisher version/DOI: http://dx.doi.org/10.1109/VETECF.2000.886317
source: IEEE Vehicular Technology Conference
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