摘要
Ka频段卫星通信因其具有可提供的带宽大、通信容量大、波束窄、终端尺小、轨道平面内可容纳的卫星多和抗干扰能力强等优势成为宽带卫星通信的理想选择。但Ka频段卫星通信受降雨因素的影响比较严重。论文提出一种基于多元LDPC码的自适应编码技术,能够有效减小雨衰影响。
Ka-band satellite communication system,therefore,for all its advantages,such as an offer of a large bandwidth,a huge capacity of communications,a narrow wave beam,a reasonably small terminal size a possible capacity for more satellites on the orbit plane and excellent anti-interference performance,will be an inexorable trend in the future satellite communication.However,the influence of rain attenuation in Ka-band satallite communication system is extremely serious.In this paper,the adaptive coding and modulation technology based on Q-ary LDPC codes is put forward to reduce rain attention.
出处
《舰船电子工程》
2017年第3期61-62,92,共3页
Ship Electronic Engineering
