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中文摘要：
本文提出了一种应用于MIMO系统的新型低复杂度迭代接收机．接收端采用基于QR分解的干扰抵消，对不同层分组并进行部分并行干扰抵消，组内采用MAP联合检测输出软信息．通过交织解交织器将软入软出检测器与turbo迭代译码器级联起来，经过迭代有效的消除了多天线问的干扰．文中采用三维外信息转移图分析了接收机迭代过程．与传统基于QR分解的串行干扰抵消迭代接收机相比性能有了极大提高，并且受信噪比估计误差的影响较小。
英文摘要：
A novel low-complexity iterative receiver in Multiple Input Multiple Output （MIMO） channel is presented. Partial parallel interference cancellation based on QR decomposition is used in, which different layers is grouped and jointly detected by MAP.The interference between different antennas is cancelled effectively through serially concatenating a soft input soft output （SISO） detector and Turbo decoder by iterative process. Three dimension extrinsic information transfer characteristics （3D EXIT charts） are used to analysis the processes of iterative. Compared with traditional QR based serial interference cancellation iterative receiver, the perfonnanee of the proposed receiver is improved greatly. And it is not sensitivity to the mismatched SNR.
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