Ber Performance of Portable Optical Wireless System Using Wavelength Diversity with Pointing Error

Portable optical wireless (POW) system is a rapidly deployable, light – weight and battery operated application of the outdoor optical wireless communication. In this study, wavelength diversity technique is examined to analyse the system performance, considering the short term and short distance fixed-to-fixed (f2f) POW system, in case of pointing error occurrence. The average bit error rate (BER) of POW system is mathematically derived, normalized beam width and jitter effects are investigated for wavelength channels. Evaluated results compared with the single transmitter and single receiver system that transmits M times increased average power. Numerical results show that the wavelength diversity technique increase the system performance especially for the use of narrow beam width under the assumption of small and same normalized jitter. High system displacement are also analysed for wide beam divergence angle and wavelength diversity technique enhances the system performance and has an advantage over M times