LOW-COMPLEXITY

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Design of Serially Concatenated Two-Level Polar Coded Modulation System with Low-Complexity
《China Communications》2025年第1期102-110,共9页Zhou Lin Liao Guojun Xu Lei An Ran Xie Xianzhong Wang Xi 
supported by the External Cooperation Program of Science and Technology of Fujian Province,China(2024I0016);the Fundamental Research Funds for the Central Universities(ZQN-1005).
Multilevel coding(MLC)is a commonly used polar coded modulation scheme,but challenging to implement in engineering due to its high complexity and long decoding delay for high-order modulations.To address these limitat...
关键词：bit-interleaved coded modulation high-order modulation multilevel coding polar codes 
Low-Complexity Reconstruction of Covariance Matrix in Hybrid Uniform Circular Array
《China Communications》2024年第3期66-74,共9页Fu Zihao Liu Yinsheng Duan Hongtao 
supported by National Key Research and Development Program of China under Grant 2020YFB1804901;State Key Laboratory of Rail Traffic Control and Safety(Contract:No.RCS2022ZT 015);Special Key Project of Technological Innovation and Application Development of Chongqing Science and Technology Bureau(cstc2019jscx-fxydX0053).
Spatial covariance matrix(SCM) is essential in many multi-antenna systems such as massive multiple-input multiple-output(MIMO). For multi-antenna systems operating at millimeter-wave bands, hybrid analog-digital struc...
关键词：hybrid array MILLIMETER-WAVE spatial covariance matrix uniform circular array 
Low-Complexity Rate Compatible Modulation with Hybrid Weight Set
《China Communications》2019年第11期93-106,共14页Wengui Rao Yan Dong Shaoping Chen Fang Lu Shu Wang 
supported by the National Natural Science Foundation of China(NSFC)under Grant No.61971452 and Grant No.91538203;supported by the Fundamental Research Funds for the Central Universities Grant SCUEC-CZY19038
Rate Compatible Modulation(RCM)is an efficient technique for high spectral efficiency seamless transmission over highly dynamic wireless channels.However,its high decoding complexity at the receiver prevents it from b...
关键词：MODULATION RATE ADAPTATION RATE compatible modulation(RCM) WEIGHT set mutual information 
Low-Complexity Joint Channel Estimation and Symbol Detection for OFDMA Systems被引量：4
《China Communications》2019年第7期49-60,共12页Rui Xin Zuyao Ni Sheng Wu Linling Kuang Chunxiao Jiang 
In this paper,we propose a joint channel estimation and symbol detection(JCESD)algorithm relying on message-passing algorithms(MPA)for orthogonal frequency division multiple access(OFDMA)systems.The channel estimation...
关键词：JOINT channel estimation and SYMBOL detection MESSAGE PASSING OFDMA 
A Low-Complexity Resource Allocation Scheme for OFDMA Multicast Systems with Proportional Fairness被引量：3
《China Communications》2018年第1期1-11,共11页Lijing Jiang Rongfang Song 
A low-complexity optimization scheme is proposed to balance the tradeoff between system capacity and proportional fairness in orthogonal frequency division multiple access(OFDMA) based multicast systems. The major cha...
关键词：RESOURCE allocation OFDMA MULTICAST team progress algorithm (TPA) 
A Low-Complexity Signal Detection Utilizing AOR Iterative Method for Massive MIMO Systems被引量：2
《China Communications》2017年第11期269-278,共10页Zhenyu Zhang Xiaoming Dai Yuanyuan Dong Xiyuan Wang Tong Liu 
supported by the key project of the National Natural Science Foundation of China (No. 61431001);Huawei Innovation Research Program, the 5G research program of China Mobile Research Institute (Grant No. [2015] 0615);the open research fund of National Mobile Communications Research Laboratory Southeast University (No.2017D02);Key Laboratory of Cognitive Radio and Information Processing, Ministry of Education (Guilin University of Electronic Technology);the Foundation of Beijing Engineering and Technology Center for Convergence Networks and Ubiquitous Services, and Keysight
Massive multiple-input multiple-output(MIMO) system is capable of substantially improving the spectral efficiency as well as the capacity of wireless networks relying on equipping a large number of antenna elements at...
关键词：massive multiple-input multiple-output(MIMO) accelerated overrelaxation(AOR) iterative method minimum mean square error(MMSE) convergence complexity 
Low-Complexity Secure Network Coding Against Wiretapping Using Intra/Inter-generation Coding被引量：9
《China Communications》2015年第6期116-125,共10页LIU Guangjun LIU Binyue LIU Ximeng LI Fang GUO Wangmei 
supported by the National Natural Science Foundation of China(Grant No.11371290,No.61271174,No. 61301178);the Science and Technology Innovation Foundation of Xi'an(Grant No. CXY1352WL28)
Existing solutions against wiretapping attacks for network coding either bring significant bandwidth overhead or incur a high computational complexity.In order to reduce the security overhead of the existing solutions...
关键词：network coding security wiretap-ping attacks algebraic coding ENCRYPTION 
Low-Complexity Signal Detection Based on Relaxation Iteration Method in Massive MIMO Systems被引量：3
《China Communications》2015年第S1期1-8,共8页GUO Ruohan LI Xiaohui FU Weihong HEI Yongqiang 
supported by the National Hightech R&D Program of China(2014AA01A704);the Natural Science Foundation of China(61201135);111 Project(B08038)
Minimum mean square error(MMSE) detection algorithm can achieve nearly optimal performance when the number of antennas at the base station(BS) is large enough compared to the number of users. But the traditional MMSE ...
关键词：MASSIVE MIMO detection minimum mean SQUARE error RELAXATION ITERATION channel estimation 
Low-Complexity Soft-Output Detection for Massive MIMO Using SCBiCG and Lanczos Methods被引量：1
《China Communications》2015年第S1期9-17,共9页XIAO Chiyang SU Xin ZENG Jie RONG Liping XU Xibin WANG Jing 
supported by Chinas 863 Project NO.2015AA01A706;the National S&T Major Project NO.2014ZX03001011;the Science and Technology Program of Beijing NO.D151100000115003;the Scientific and Technological Cooperation Projects NO.2015DFT10160B
Massive MIMO is a promising technology to improve spectral efficiency, cell coverage, and system capacity for 5G. However, these benefits take place at great cost of computational complexity, especially in systems wit...
关键词：MASSIVE MIMO soft-output DETECTION SCBiCG LANCZOS LOW-COMPLEXITY 
Low-Complexity Channel Reconstruction Methods Based on SVD-ZF Precoding in Massive 3D-MIMO Systems被引量：2
《China Communications》2015年第S1期49-57,共9页REN Yuwei SONG Yang SU Xin 
supported by the National High Technology Research and Development Program of China(863 Program)(Grant No.2014AA01A705);National Science and Technology Major Project of China(Grant No.2015ZX03001034)
In this paper, we study the low-complexity channel reconstruction methods for downlink precoding in massive multiple-Input multiple-Output(MIMO) systems. When the user is allocated less streams than the number of its ...
关键词：CHANNEL reconstruction SVD 3D-MIMO MASSIVE MIMO 
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