共被期刊论文引用了4次
您的检索式：您选中1篇文献正在查看引证文献汇总
|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Waveform design and high-resolution imaging of cognitive radar based on compressive sensing显示文摘We introduce the compressive sensing(CS) theory for waveform design of cognitive radar,and then propose an algorithm for the high-resolution radar signal waveform and its corresponding imaging method based on the sparse orthogonal frequency division multiplexing-linear frequency modulation(OFDM-LFM) signal.We first present the principle of spectrum synthesis and high-resolution imaging based on OFDM-LFM signals.Then,we propose the spectrum-sparse waveform design criterion and the reconstruction algorithm for a highresolution range profile(HRRP) based on CS.Based on this,we analyze in detail the relationship between the scattering characteristics of the target and the parameters of the designed signal,and we construct the feedback of the target characteristics on the waveforms.Therefore,the 'cognitive' function of radar can be achieved by adaptively adjusting the waveform with the target characteristics.Simulations are given to validate the effectiveness of the proposed algorithm. | LUO Ying ZHANG Qun HONG Wen WU YiRong | 2012 | Science China(Information Sciences)2012，55，11： | 19 |
| 2 | 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 |
| 3 | 应用于OFDM-UWB接收机的CMOS信号强度指示器显示文摘给出一种应用于超宽带零中频接收机的宽带RSSI电路.改进了传统的全波整流器,解决了增大其带宽与减小静态输出电流的矛盾,使其带宽提高到300MHz的同时消除了输出静态电流.采用0.13μm CMOS工艺,芯片面积为1.27mm2.测试结果表明RSSI工作带宽为300MHz,在-64~-4dBm输入范围内,检测误差小于±1.5dB,在1.2V电压下消耗电流10.6mA. | 李丹 李巍 李宁 任俊彦 | 2012 | 复旦学报(自然科学版)2012，51，1： | 3 |
| 4 | A monolithic RF transceiver for DC-OFDM UWB显示文摘This paper presents a first monolithic RF transceiver for DC-OFDM UWB applications.The proposed direct-conversion transceiver integrates all the building blocks including two receiver(Rx) cores,two transmitter (Tx) cores and a dual-carrier frequency synthesizer(DC-FS) as well as a 3-wire serial peripheral interface(SPI) to set the operating status of the transceiver.The ESD-protected chip is fabricated by a TSMC 0.13-μm RF CMOS process with a die size of 4.5 x 3.6 mm2.The measurement results show that the wideband Rx achieves an NF of 5-6.2 dB,a max gain of 76-84 dB with 64-dB variable gain,an in-/out-of-band IIP3 of-6/+4 dBm and an input loss S11 of<-10 in all bands.The Tx achieves an LOLRR/IMGRR of-34/-33 dBc,a typical OIP3 of+6 dBm and a maximum output power of -5 dBm.The DC-FS outputs two separate carriers simultaneously with an inter-band hopping time of<1.2 ns.The full chip consumes a maximum current of 420 mA under a 1.2-V supply. | 陈云锋 李巍 傅海鹏 高亭 陈丹凤 周锋 蔡德鋆 李丹 牛杨杨 周涵超 朱宁 李宁 任俊彦 | 2012 | Journal of Semiconductors2012，33，2： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员