Abstract
Abstract
In the future communication technology standards, wireless communication in high mobility scenes is extremely important, but the fast fading of the channel and the Doppler frequency shift caused by high-speed mobile will seriously affect the overall performance of the system. The communication performance indicators such as bit error rate (BER), computational complexity and transmission capacity will degrade. This paper introduces several coded modulation schemes of joint coding modulation diversity (JCMD), orthogonal time-frequency space (OTFS) modulation and space-frequency block code (SFBC), and uses bit interleaved coded modulation (BICM) as a reference for comparison. The simulation results show that the JCMD scheme has the best block error rate (BLER) performance under different moving speed and code rate conditions. And JCMD has strong robustness, can achieve large performance gains even under the conditions of high speed and high code rate.