国家自然科学基金资助项目（60736009）；教育部新世纪优秀人才基金资助项目；陕西省教育厅专项科研基金资助项目(08JK208)
提出了一种具有嵌套结构的RAKE接收机（嵌套式RAKE接收机），该接收机基于串行干扰抵消技术对支路依次解调，当前支路与已解调支路构成RAKE子结构，各RAKE子结构具有嵌套关系。最新数据估计由RAKE子结构各支路的解调器输出按照最大比值合并后判决给出。支路再生信号的数据估计更新通过最新数据估计的替换来实现。对嵌套式RAKE接收机进行了性能分析。理论分析和仿真实验表明，嵌套式RAKE接收机能够很好的抑制多径干扰，改善误码性能，结构简单且易于实现。
A multipath interference cancellation RAKE receiver with nested structure is proposed based on successive interference cancellation method. In the proposed method, the present branch and the demodulated branch form a substructure of the RAKE receiver, while the RAKE substructures are nested. The data estimate of the present branch is obtained by the maximum ratio combination of the demodulator output in the corresponding RAKE substructure. The update of the regeneration signal is achieved by replacing the previous branch data with the present branch data estimate . Performance of the new RAKE receiver was analyzed. Theoretical analysis and simulation results show that the new RAKE receiver with simple structure and easy implementations can suppress the multipath interference and improves the BER performance.
张东红,廖桂生.具有嵌套结构的串行多径干扰抵消RAKE接收机[J].重庆大学学报,2009,32(10):1236-1240.
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