Title :
Performance of pulse-position modulation with trellis-coded modulation on non-directed indoor infrared channels
Author :
Lee, David C. ; Audeh, Malik D. ; Kahn, Joseph M.
Author_Institution :
Dept. of Electr. Eng. & Comput. Sci., California Univ., Berkeley, CA, USA
Abstract :
We examine the performance of high-speed non-directed infrared links using pulse-position modulation (PPM) with trellis-coded modulation (TCM) to mitigate the effects of multipath-induced intersymbol interference (ISI) on such links. Using the measured characteristics of multipath indoor infrared channels, we calculate BER curves and ISI power penalties for maximum-likelihood sequence detection of 8-PPM links using rate-2/3 trellis codes operating at 10 and 30 Mb/s. Our results indicate that TCM is a very promising coding technique for L-PPM on high-speed non-directed infrared channels
Keywords :
error statistics; intersymbol interference; light interference; maximum likelihood detection; multipath channels; optical communication; optical signal detection; performance evaluation; pulse position modulation; trellis coded modulation; trellis codes; wireless LAN; 30 Mbit/s; 8-PPM links; BER curves; ISI; ISI power penalties; L-PPM; PPM; TCM; high speed nondirected IR links; maximum-likelihood sequence detection; measured characteristics; multipath induced intersymbol interference; nondirected indoor infrared channels; pulse-position modulation; rate-2/3 trellis codes; trellis-coded modulation; wireless LAN; Fading; Fluorescent lamps; Intersymbol interference; Optical modulation; Optical noise; Optical receivers; Optical reflection; Optical transmitters; Pulse modulation; Signal to noise ratio;
Conference_Titel :
Global Telecommunications Conference, 1995. GLOBECOM '95., IEEE
Print_ISBN :
0-7803-2509-5
DOI :
10.1109/GLOCOM.1995.502723
