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中文摘要：
针对单输入多输出（single-input multiple-output,SIMO）有限冲激响应（finite impulse response,FIR）信道,提出了一种新的信道阶数盲估计算法。首先利用子空间（subspace,SS）算法下过估计信道与其互质部分的结构关系,设计了一种新的信道矩阵迭代（channel matrix recursion,CMR）准则,并给出了CMR准则严格的理论证明。然后在此基础上建立了新的CMR代价函数,并提出了信道阶数估计算法。理论分析和仿真结果表明,该算法与现有其它算法相比性能更优,对噪声具有更强的鲁棒性。
英文摘要：
A new blind algorithm for channel order estimation is proposed with respect to the singleinput multiple-output（ SIMO） finite impulse response（ FIR） channel. Firstly,the structural relationship between the overestimated channel and its coprime part is utilized,a novel channel matrix recursion（ CMR） criterion is designed and a strict theoretical proof is provided for the CMR criterion. Furthermore,a new CMR cost function is constructed,and the new channel order estimation algorithm is also proposed. Theoretical analysis and simulation results show that the algorithm outperforms other existing techniques and is more robust to noise.
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