摘要
针对恶劣环境下的军事通信需求,设计了一个直扩-八进制相移键控(DS-8PSK)短波低速数据传输方案。在发送端,用多进制正交扩频来解决频带与信息传输速率之间的矛盾,设计了一个复合扩频序列提高系统抗干扰性,在接收端,设计了一种改进型Rake接收机来实现分集接收,提高了系统抗多径衰落的能力。最后,用Matlab对数传系统的性能进行仿真验证,仿真结果验证了该方案的有效性。
To meet the request of military communication in severe environment, a scheme for DS-SPSK HF low-speed da- ta transmission is designed. On the transmitting end, m-ary orthogonal spread spectrum is used to resolve the contradiction between the bandwidth and the data transmission velocity, and a composite spreading sequence is designed to improve the anti- jamming capacity of the system; on the receiving end, an improved Rake receiver is designed to achieve diversity reception and enhance the ability of anti-multipath fading. The data transmission system is simulated and tested with Matlab. The simulation results indicate that the scheme is effective.
出处
《现代电子技术》
2012年第11期39-41,共3页
Modern Electronics Technique
