Title :
Trellis-coded pulse-position modulation for indoor wireless infrared communications
Author :
Lee, David C M ; Kahn, Joseph M. ; Audeh, Malik D.
Author_Institution :
Dept. of Electr. Eng. & Comput. Sci., California Univ., Berkeley, CA, USA
Abstract :
We analyze the performance of trellis-coded pulse-position modulation (PPM) on indoor, wireless infrared channels. We show that maximum-likelihood sequence detection (MLSD) of trellis-coded PPM is very effective in mitigating the multipath dispersion on such channels. We present code search results for high constraint-length, rate-2/3, 8-PPM and rate-3/4, 16-PPM codes. We provide bit-error-rate curves and intersymbol interference power penalties for MLSD of PPM with these codes, evaluated on ceiling-bounce channel models with delay spread per bit duration ratios of 0.02 to 0.3. Finally, we present Monte Carlo simulation results to verify our analysis
Keywords :
Monte Carlo methods; delays; estimation theory; intersymbol interference; maximum likelihood detection; multipath channels; optical communication; optical signal detection; pulse position modulation; trellis coded modulation; 8-PPM; MLSD; Monte Carlo simulation results; PPM; bit error rate curves; ceiling bounce channel models; code search results; delay spread per bit duration ratios; high constraint-length codes; indoor wireless infrared communications; intersymbol interference power penalties; maximum-likelihood sequence detection; multipath dispersion; rate-2/3 code; rate-3/4 code; trellis coded pulse position modulation; wireless infrared channels; Bandwidth; Intersymbol interference; Maximum likelihood detection; Optical fiber communication; Optical noise; Optical receivers; Optical transmitters; Pulse modulation; Signal to noise ratio; Wireless communication;
Conference_Titel :
Personal, Indoor and Mobile Radio Communications, 1996. PIMRC'96., Seventh IEEE International Symposium on
Conference_Location :
Taipei
Print_ISBN :
0-7803-3692-5
DOI :
10.1109/PIMRC.1996.567414
