Intensity Position Modulation for Free-Space Laser Communication System
نویسندگان
چکیده
منابع مشابه
Intensity Position Modulation for Free-Space Laser Communication System
In this study a novel analog modulation-demodulation technique for free-space laser communication system called Intensity Position Modulation (IPM) is carried out. According to TEM00 mode of a laser beam and by linear fitting on the Gaussian function as an approximation, the variation of the linear part on the reverse biased pn photodiode produced various currents. Our simulated results show fi...
متن کاملDifferential Multi-Pulse Position Modulation for Free Space Optical Communication
In order to improve the laser output power in free space optical communication, it is necessary to improve the power efficiency of laser modulation as much as possible, in the case of the limitation of the laser. In this paper, based on the theory of pulse position modulation (PPM), a differential multi-pulse position modulation(DMPPM) scheme was designed, by consulting the structure characteri...
متن کاملLink Range of Free Space Laser Communication System
In this paper a model analytical description of a Free Space Laser Communication System the type ground-tospace is constructed. It is used for quantitative determination of the maximum range between transmitter and receiver depending on the bit error rate (BER). The laser radiation extinction in the atmosphere is accounted for by means of the visibility.
متن کاملAchievable information rate for outdoor free space optical communication with intensity modulation and direct detection
This work investigates the achievable information rate with the state-of-the-art turbo coding and intensity modulation / direct detection for outdoor long-distance free-space optic (FSO) communications. The channel under weak atmospheric turbulence is modeled as a log-normal intensity fading channel where on-off keying makes it look asymmetric. While no effort is made to spectrally match the co...
متن کاملMIMO Free-Space Optical Communication Employing Subcarrier Intensity Modulation in Atmospheric Turbulence Channels
In this paper, we analyse the error performance of transmitter/receiver array free-space optical (FSO) communication system employing binary phase shift keying (BPSK) subcarrier intensity modulation (SIM) in clear but turbulent atmospheric channel. Subcarrier modulation is employed to eliminate the need for adaptive threshold detector. Direct detection is employed at the receiver and each subca...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: American Journal of Applied Sciences
سال: 2005
ISSN: 1546-9239
DOI: 10.3844/ajassp.2005.1178.1181