Trellis-Coded Multiple-Pulse-Position Modulation for Wireless Infrared Communications

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We present new trellis codes based on multiple-pulse-position modulation (MPPM) for wireless infrared communication. We assume that the receiver uses maximum-likelihood sequence detection to mitigate the effects of channel dispersion, which we model using a first-order lowpass filter. Compared to trellis codes based on PPM, the new codes are less sensitive to multipath dispersion and offer better power efficiency when the desired bit rate is large, compared with the channel bandwidth. For example, when the bit rate equals the bandwidth, trellis-coded ((17)(2)) -MPPM requires 1.4 dB less optical power than trellis-coded 16-PPM having the same constraint length.
Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Issue Date
2004-04
Language
English
Article Type
Article
Citation

IEEE TRANSACTIONS ON COMMUNICATIONS, v.52, no.4, pp.643 - 651

ISSN
0090-6778
DOI
10.1109/TCOMM.2004.826382
URI
http://hdl.handle.net/10203/84331
Appears in Collection
EE-Journal Papers(저널논문)
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