• Mohammad Yawar wani
• Dr Karamjit Kaur
• Dr Priti Singh

As a fast growing era of modern communication techniques, the demand arises for consistent high data rate transmission. The growing field of FSO systems provides the arising needs of high data transmission in communication systems. A lot of performance improvement techniques are established for FSO systems and one of them is implementing different modulation technique which allows different bits per symbol achieving higher throughputs. M-ary Quadrature Amplitude Modulation (M-QAM) is one of extensively used modulation techniques in the practice because of its efficiency in power and bandwidth Therefore, a need of studying and evaluating the performance of QAM modulation schemes is an important task for effective communication point of view. In this paper, QAM modulation scheme for 32 bits per symbol at 10Gbps data rate is designed. Performance of the system under 32 QAM is analyzed in terms of BER with varying input power levels and attenuation.

Bit error rate, Quadrature amplitude modulation

"DESIGN OF 10 Gbps FSO COMMUNICATION LINK UNDER QUADRATURE AMPLITUDE MODULATION", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.5, Issue 6, page no.354-357, June-2018, Available :http://www.jetir.org/papers/JETIR1806439.pdf

"DESIGN OF 10 Gbps FSO COMMUNICATION LINK UNDER QUADRATURE AMPLITUDE MODULATION", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.5, Issue 6, page no. pp354-357, June-2018, Available at : http://www.jetir.org/papers/JETIR1806439.pdf