fa Performance of Multi-beam Satellite Systems With A New Bandwidth Sharing Algorithm مخابرات Communication پژوهشي Research <div dir="ltr"><span style="font-size:10.0pt;">An efficient resource allocation is important to guarantee the best performance with a fair distribution of multi-beam satellite capacity to provide satellite multimedia and broadcasting services. In this way, available bandwidth and capacity problems in new satellite system likes Multi-Input-Multi-Output (MIMO), exploring new techniques for enhancing spectral efficiency in satellite communication has become an important research challenge. In this aspect, multi-beam or frequency reuse can be considered as a promising solution to solve spectrum scarcity problem. In this paper, a new bandwidth sharing algorithm for&shy; satellite systems under multi-beam technique is proposed.&nbsp; Furthermore, by using the above framework, capacity of multi-beam satellite system based the number of antenna was simulated and compared them to obtain a solution for designing the next generation satellite systems. Therefore, by using the multi-beam and multi antennas satellite parameters considered in the first step, the bit error rate was achieved by 4-QAM and 4-PSK modulations based on the number of antennas. </span></div> An efficient resource allocation is important to guarantee the best performance with a fair distribution of multi-beam satellite capacity to provide satellite multimedia and broadcasting services. In this way, available bandwidth and capacity problems in new satellite system likes Multi-Input-Multi-Output (MIMO), exploring new techniques for enhancing spectral efficiency in satellite communication has become an important research challenge. In this aspect, multi-beam or frequency reuse can be considered as a promising solution to solve spectrum scarcity problem. In this paper, a new bandwidth sharing algorithm for&shy; satellite systems under multi-beam technique is proposed.&nbsp; Furthermore, by using the above framework, capacity of multi-beam satellite system based the number of antenna was simulated and compared them to obtain a solution for designing the next generation satellite systems. Therefore, by using the multi-beam and multi antennas satellite parameters considered in the first step, the bit error rate was achieved by 4-QAM and 4-PSK modulations based on the number of antennas. Satellite, Multi-beam, Frequency reuse, Fifth generation, Power, Bandwidth sharing, Digital modulation, Capacity, Path loss, Rain attenuation, Bit error rate. Satellite, Multi-beam, Frequency reuse, Fifth generation, Power, Bandwidth sharing, Digital modulation, Capacity, Path loss, Rain attenuation, Bit error rate. 29 35 http://jiaeee.com/browse.php?a_code=A-10-183-14&slc_lang=fa&sid=1 Pedram Hajipour پدرام حاجی پور stud.hajipour@iausr.ac.ir. 10031947532846003722 10031947532846003722 Yes Department of Communication, College of Electrical Engineering, Yadegar-e-Imam Khomeini (RAH) Shahr-e-rey Branch, Islamic Azad University, Tehran, Iran, Department of Communication, College of Electrical Engineering, Yadegar-e-Imam Khomeini (RAH) Shahr-e-rey Branch, Islamic Azad University, Tehran, Iran, Ali Shahzadi علی شهزادی Shahzadi@semnan.ac.ir 10031947532846003723 10031947532846003723 No 2 Associate professor, Faculty of Electrical and Computer Engineering , Semnan University, Semnan, Iran. Associate professor, Faculty of Electrical and Computer Engineering , Semnan University, Semnan, , Iran,