Name
Title | ||
|---|---|---|
Decision-feedback equalization of pulse-position modulation on measured nondirected indoor infrared channels |
Abstract | ||
|---|---|---|
We examine the performance of two decision-feedback equalizers (DFEs) for pulse-position modulation (PPM) on measured non-directed indoor infrared channels with intersymbol interference (ISI). PPM offers high average-power efficiency, but on ISI channels, unequalized PPM suffers severe performance penalties. We have previously examined the performance of the maximum-likelihood sequence detector (MLSD), and found that it yields significant improvements. However the MLSD often requires such large complexity and delay that it may be impractical. We investigate suboptimal, reduced-complexity equalization techniques for PPM, providing a performance analysis of zero-forcing chip-rate and symbol-rate DFEs. Detailed performance results for 2-, 4-, 8-, and 16-PPM links at bit rates of 10 Mb/s and 30 Mb/s over 46 actual measured indoor infrared channels are presented for these two DFEs. Our results show that a symbol-rate DFE provides performance that closely approaches that of the optimal MLSD |
Year | DOI | Venue |
|---|---|---|
1999 | 10.1109/26.764921 | Communications, 1996. ICC '96, Conference Record, Converging Technologies for Tomorrow's Applications. 1996 IEEE International Conference |
Keywords | Field | DocType |
decision feedback equalisers,error statistics,intersymbol interference,optical communication,optical modulation,pulse position modulation,telecommunication channels,BER,ISI channels,PPM,decision-feedback equalization,delay,high average-power efficiency,intersymbol interference,maximum-likelihood sequence detector,measured nondirected indoor infrared channels,optimal MLSD,performance,pulse-position modulation,reduced-complexity equalization,suboptimal equalization techniques,symbol-rate DFE,zero-forcing chip-rate DFE,zero-forcing symbol-rate DFE | Intersymbol interference,Pulse-position modulation,Equalization (audio),Computer science,Control theory,Optical communication,Communication channel,Electronic engineering,Modulation,Infrared,Detector | Journal |
Volume | Issue | ISSN |
47 | 4 | 0090-6778 |
ISBN | Citations | PageRank |
0-7803-3250-4 | 19 | 7.93 |
References | Authors | |
8 | 3 | |
Name | Order | Citations | PageRank |
|---|---|---|---|
| M. D. Audeh | 1 | 96 | 66.79 |
| JOSEPH M. KAHN | 2 | 3868 | 990.40 |
| J. R. Barry | 3 | 1298 | 381.86 |