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2篇 您的检索式：作者名="ChenQingchun"

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		题名	作者	年代	出处	被引量
	1	EnergyconsumptionforgraindryinginChina显示文摘	ChenKunjie ChenQingchun ZhangYin	2005	TransactionsoftheCSAE2005，21，5：	1
	2	Performance Evaluation of Hybrid ARQ with Code Combining in Packet-Oriented CDMA System显示文摘In this paper, an extended SNR (signal to noise ratio) concept is proposed to explicate the contribution of code combining to the performance improvement of hybrid ARQ (Automatic repeat request) over the additive white Gaussian noise channel. By extending the Pursley's SNR analysis to hybrid ARQ with code combining in packet-oriented CDMA (Code division multiple access)system, the extended SNR formula is derived, which describes explicitly the SNR variation of the code symbol involved in code combining. It is revealed that the extended SNR formula includes Pursley's SNR formula as a specialcase. Moreover, it is shown that the effective SNR of the combined symbol is increased by a coefficient, which is proportional to the number of repeated replicas involved in the code combining. Based on the extended SNR formula and the resultant SNR variation, a quasi-analytical approximation method is proposed for the performance evaluation of hybrid ARQ with code combining. The residual error rates, average transmission number together with throughput performance are presented by means of numerical analysis and through simulations. It is validated that the extended SNR formula and the resultant quasi-analytical approximations offer a simplified routine to estimate the performance of hybrid ARQ with code combining, particularly for the applications whose reliability performance with respect to the FEC counterpart system could be numerically calculated or evaluated through simulations.	CHENQingchun FANPingzhi	2004	Chinese Journal of Electronics2004，13，1：	0

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