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arXiv cs/0509007cs.ITmath.IT
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加性高斯白噪声信道中的非数据辅助参数估计

Non-Data-Aided Parameter Estimation in an Additive White Gaussian Noise Channel

Fredrik Brannstrom, Lars K. Rasmussen

摘要:

针对加性高斯白噪声信道中的二进制相移键控传输,研究了非数据辅助(NDA)参数估计问题。Cramer-Rao下界(CRLB)的信号幅度,噪声方差,信道可靠性常数和比特出错率推导出,它是如何显示这些参数与信噪比(SNR)。迭代最大似然(ML)SNR估计的替代推导提出了一种新的,低复杂度的NDA SNR估计。所提出的估计的性能进行比较,以前建议的估计和CRLB。结果表明,所提出的估计执行接近迭代ML估计,在显着较低的计算复杂性。

英文摘要:

Non-data-aided (NDA) parameter estimation is considered for binary-phase-shift-keying transmission in an additive white Gaussian noise channel. Cramer-Rao lower bounds (CRLBs) for signal amplitude, noise variance, channel reliability constant and bit-error rate are derived and it is shown how these parameters relate to the signal-to-noise ratio (SNR). An alternative derivation of the iterative maximum likelihood (ML) SNR estimator is presented together with a novel, low complexity NDA SNR estimator. The performance of the proposed estimator is compared to previously suggested estimators and the CRLB. The results show that the proposed estimator performs close to the iterative ML estimator at significantly lower computational complexity.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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