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我们提出了一种新的基于导频辅助的MC-CDMA系统的信道估计和解相关、解相关干扰消除检测器。这里的基于导频辅助的MC-CDMA系统的信道估计采用了一种新的算法,通过设计每个用户的导频信息,无需增加系统的过多负担,就可以实现较好的信道估计。解相关检测器采用了伪逆算法,解相关干扰消除检测器则用解相关检测器的输出作为一级输入,结合并行干扰消除算法。仿真结果显示了信道估计和多用户检测器的较好性能。
We propose a new channel estimation and decorrelation, decorrelation-related interference cancellation detector for MC-CDMA systems based on pilot assistance. The channel estimation based on pilot-aided MC-CDMA system here adopts a new algorithm. By designing per-user pilot information, better channel estimation can be achieved without increasing system excessive load. De-correlation detector uses a pseudo-inverse algorithm, and decorrelation-related interference cancellation detector uses the output of the decorrelation detector as a first order input, in combination with a parallel interference cancellation algorithm. Simulation results show the better performance of channel estimation and multiuser detectors.