摘要
Turbo均衡是一种基于Turbo迭代解码原理的均衡技术,利用的是均衡器与解码器之间信息的迭代使用来达到消除码间干扰的目的。Turbo均衡技术中通常采用基于最大后验概率的最大后验概率(MAP)均衡器,虽然性能较好,但计算量较大,系统延时较长。为降低延时,保证均衡性能,针对无人机遥控遥测数据链信道,设计了一种相对于MAP均衡器计算量较少的线性最小均方误差(MMSE)均衡器,通过仿真验证了这种线性Turbo均衡的性能,分析了其应用的可行性。
Turbo equalization is based on the iterative principle of Turbo decoding,information is used between the equalizer and the decoder based on iterative principle in Turbo equalization to reduce intersymbol interference.The MAP equalizer used in Turbo equalization often leads to high complexity and delay.According to the UAV＇s data link channel,a linear MMSE equalizer with lower complexity and less delay is used in Turbo equalization.The performance and the feasibility are analyzed in the simulation.
出处
《无线电工程》
2011年第5期20-22,共3页
Radio Engineering
