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Title: Coded PPM based modulations for infrared WLAN'S
Author: Alves, R.
Gameiro, A.
Keywords: Infrared
TCM coding
Rate adaptation
Issue Date: 2006
Publisher: ACTA Press
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, by the use of Trellis-Coded Modulation (TCM) codes. We 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. The theoretical coding gains are confirmed by simulation. Finally a set of multirate systems using the derived TCM coding are evaluated, and their practical benefits observed in terms of connectivity improvements.
Peer review: yes
ISBN: 0-88986-545-0
0-88986-547-7 (CD)
ISSN: 1482-7905
1922-8082 (CD)
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Appears in Collections:DETI - Comunicações

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