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http://hdl.handle.net/10773/8141
Title: | TCM coding of PPM based modulations for Infrared WLAN's impaired by ISI |
Author: | Alves, R. Gameiro, A. |
Keywords: | Infrared wireless communications Pulse Position Modulation Trellis-Coded Modulation InterSymbol Interference |
Issue Date: | 2006 |
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, by the use of Trellis-Coded Modulation (TCM) codes. We describe the best code search and results, which demonstrate that, even with trellis codes of moderate complexity, non-negligible coding gains can be obtained without bandwidth expansion. Monte Carlo simulations have been done to compare uncoded PPM against APPM and OPPM TCM coded systems performances, on ceiling-bounce channel models for various values of delay spread. Although our codes were derived for the AWGN channel without Inter-Symbol Interference (ISI) awareness, their behavior in multipath dispersion channels is quite effective. |
Peer review: | yes |
URI: | http://hdl.handle.net/10773/8141 |
DOI: | 10.1109/ISWPC.2006.1613647 |
ISBN: | 0-7803-9410-0 |
Publisher Version: | http://www.scopus.com/inward/record.url?eid=2-s2.0-33750418797&partnerID=40&md5=a19e298bf8fa59b5223434ad12095133 |
Appears in Collections: | DETI - Comunicações |
Files in This Item:
File | Description | Size | Format | |
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ISWPC2006.pdf | 370.34 kB | Adobe PDF | View/Open |
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