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4篇 您的检索式：作者名="BERBER Stevan"

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		题名	作者	年代	出处	被引量
	1	An efficient sparse channel estimator combining time-domain LS and iterative shrinkage for OFDM systems with IQ-imbalances显示文摘A time-domain(TD) least square(LS) channel estimator is first proposed to estimate channel parameters of OFDM system with IQ imbalances at both transmitter and receiver.Then,an iterative shrinkage(IS) algorithm from compressed sensing is adopted to further improve the estimation performance by using the TD-LS solution as the initial value of IS in the case of sparse channel.Simulation shows that our algorithm combining TD-LS and IS performs better on bit error rate than the frequency-domain LS and matching pursuit in sparse Hilly Terrain channel when the same LS equalizer is adopted.	SHU Feng ZHAO JunHui YOU XiaoHu WANG Mao CHEN Qian STEVAN Berber	2012	Science China(Information Sciences)2012，55，11：	10
	2	ML integer frequency offset estimation for OFDM systems with null subcarriers:Estimation range and pilot design显示文摘In this paper the estimation range(ERG) of any null subcarriers(NSC) placement is further investigated and sufficient and necessary conditions of an NSC allocation that achieves a full ERG are defined.Then,a perfect distributed NSC allocation with the NSC distance larger than coherent bandwidth is devised to fully exploit frequency diversity of wireless channels and achieve a full ERG.Simulations confirmed that the propsoed FFT-based ML method of using this NSC placement has a smaller bandwidth overhead,achieves a fuller ERG and provides a better performance than the existing methods of using the consecutive NSC allocation at middle and high signal-to-noise ratios(SNRs).	SHU Feng BERBER Stevan WANG DongMing ZHANG QinChuan WANG Mao	2010	Science China(Information Sciences)2010，53，12：	8
	3	稀疏多径信道环境中MIMO-OFDM系统的IQ不平衡和信道联合估计显示文摘该文针对稀疏多径信道环境中的MIMO-OFDM系统所存在的IQ不平衡问题,提出了一种IQ不平衡参数和信道的联合估计方法。推导了联合估计的时域模型,提出了基于1 2l-l优化模型和平行坐标下降算法的联合估计算法。仿真结果表明,所提方法与传统的频域最小二乘算法和匹配追踪算法相比,显著提高了系统性能。	梁彦束锋张一晋 Berber Stevan	2013	电子与信息学报2013，35，2：	8
	4	Theoretical Model,Simulation Results and Performances of a Secure Chaos-based Multi-user Communication System显示文摘	Gobindar S Sandhu Stevan Berber	2009	International Journal of Network Security2009，8，01：	1

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