A Novel SNR Estimation Technique Associated with Hybrid ARQ
A Novel SNR Estimation Technique Associated with Hybrid ARQ
复制标题
一种与混合ARQ相关的新型SNR估计技术
DOI:
10.1587/transfun.e92.a.2895
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发表时间:
2009-11
影响因子:
0.5
通讯作者:
Fan, Pingzhi
中科院分区:
文献类型:
--
作者:
Chen, Qingchun;Fan, Pingzhi
By using multiple repeated signal replicas to formulate the accumulative observed noisy signal sequence (AONSS) or the differential observed noisy signal sequence (DONSS) in the hybrid ARQ system, a novel data-aided maximum likelihood (DA ML) SNR estimation and a blind ML SNR estimation technique are proposed for the AWGN channel. It is revealed that the conventional DA ML estimate is a special case of the novel DA ML estimate, and both the proposed DA ML and the proposed blind ML SNR estimation techniques can offer satisfactory SNR estimation without introducing significant additional complexity to the existing hybrid ARQ scheme. Based on the AONSS, both the generalized deterministic and the random Cramer-Rao lower bounds (GCRLBs), which include the traditional Cramer-Rao lower bounds (CRLBs) as special cases, are also derived. Finally, the applicability of the proposed SNR estimation techniques based on the AONSS and the DONSS are validated through numerical analysis and simulation results.
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DOI:
10.1109/26.58745
发表时间:
1990-08
期刊:
IEEE Trans. Commun.
影响因子:
--
作者:
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通讯作者:
S. Kallel
影响因子:
2
作者:
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影响因子:
4.4
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影响因子:
8.3
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R. Gagliardi;C. Thomas
影响因子:
1.1
作者:
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通讯作者:
Soon-Young Kim;J. Chang;M. Lee