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2018中国信息通信大会(CICC2018)

作者： Junjie Yan Dapeng Wu School of Communication and Information Engineering Chongqing University of Posts and Telecommunications Key Laboratory of Optical Communication and Networks in Chongqing Key Laboratory of Ubiquitous Sensing and Networking in Chongqing

To meet the requirements of lower latency and massive data transmission in Virtual Reality（VR）applications,a cooperative transmission mechanism is proposed for VR applications over 5g new *** particular,different-quality coding levels are utilized through multipoint cooperative transmission to support the immersive experience of users’ different views.

关键词： Multipoint Cooperative Scalable Video Coding Virtual Reality 5g new radio

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On Normalized Least Mean Square Based Interference Cancellation Algorithm for Integrated Sensing and Communication Systems

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ZTE Communications 2024年第3期22卷 21-28页

作者： YU Xiaohui YU Shucheng LIU Xiqing PENg Mugen Beijing University of Posts and Telecommunications Beijing 100876China

Integrated sensing and communication(ISAC)technology is a promising candidate for next-generation communication ***,severe co-site interference in existing ISAC systems limits the communication and sensing performance,posing significant challenges for ISAC interference *** this work,we propose a novel interference management scheme based on the normalized least mean square(NLMS)algorithm,which mitigates the impact of co-site interference by reconstructing the interference from the local transmitter and canceling it from the received *** results demonstrate that,compared to typical adaptive interference management schemes based on recursive least square(RLS)and stochastic gradient descent(SgD)algorithms,the proposed NLMS algorithm effectively cancels co-site interference and achieves a good balance between computational complexity and convergence performance.

关键词： interference management OFDM 5g new radio interference cancellation radio frequency domain

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FPgA Implementation of 5g NR Primary and Secondary Synchronization

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Computers, Materials & Continua 2022年第10期73卷 1585-1600页

作者： Aytha Ramesh Kumar K.Lal Kishore Department of ECE VNR Vignana Jyothi Institute of Engineering&TechnologyHyderabad500090India JNTUA Former Vice ChancellorIndia

The 5g communication systems are widely established for highspeed data processing to meet users *** 5g new radio(NR)communications comprise a network of ultra-low latency,high processing speeds,high throughput and rapid synchronization with a time frame of 10 *** between User Equipment(UE)and 5g base station known as gNB is a fundamental procedure in a cellular system and it is performed by a synchronization *** 5g NR system,Primary Synchronization Signal(PSS)and Secondary Synchronization Signal(SSS)are used to detect the best serving base station with the help of a cell search *** paper aims to determine the Physical Cell Identity(PCI)by using primary synchronization and secondary synchronization *** PSS and SSS detection for finding PCI is implemented on Zynq-7000 series Field Programmable gate Arrays(FPgA)*** are reconfigurable devices and easy to design complex circuits at high *** proposed architecture employs Primary Synchronization Signal(PSS)and Secondary Synchronization Signal(SSS)detection aims with high speed and low power *** synchronization blocks have been designed and the synthesized design block is implemented on the Zynq-7000 series Zed board with a maximum operating clock frequency of 1 gHz.

关键词： 5g new radio FPgA physical cell identity primary and secondary synchronization

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On Uplink Non-Orthogonal Multiple Access for 5g：Opportunities and Challenges

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China Communications 2017年第12期14卷 142-152页

作者： Li Tian Chunlin Yan Weimin Li Zhifeng Yuan Wei Cao Yifei Yuan ZTE Corporation South Keji Road 55 Shenzhen 508118 China

In this paper,the concept of grantfree non-orthogonal multiple access(NOMA) for uplink data transmission is *** in combination with grant-free can be applied to ultra reliability low latency communication(URLLC),massive machine type communication(m MTC),enhanced mobile broadband(e MBB) small packet and two-step random-access channel(RACH) *** advantages of grant-free NOMA are low latency and signaling overhead,high access capability and efficient resource *** uplink NOMA schemes are summarized and preliminary comparison among a subset of schemes are ***,design aspects for grant-free NOMA are discussed,with special notes on particular issues such as blind UE identification and transmitter/receiver(Tx/Rx) impairments in realistic deployment.

关键词： 5g new radio non-orthogona multiple access grant-free transmission

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Spectrum Sensing for OFDMA Using Multicarrier Covariance Matrix Aware CNN

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ZTE Communications 2022年第3期20卷 61-69页

作者： ZHANg Jintao HE Zhenqing RUI Hua XU Xiaojing National Key Laboratory of Science and Technology on Communications University of Electronic Science and Technology of ChinaChengdu 611731China ZTE Corporation Shenzhen 518057China State Key Laboratory of Mobile Network and Mobile Multimedia Technology Shenzhen 518055China

We consider spectrum sensing problems in the orthogonal frequency division multiplexing access(OFDMA)cognitive radio scenario,where a secondary user with multiple antennas detects several consecutive subcarriers of an entire OFDM symbol occupied by multiple primary ***,an OFDM multicarrier covariance matrix convolutional neural network(CNN)-based approach is proposed for simultaneously detecting the occupancy of all OFDM subcarriers,where the multicarrier sample covariance matrix array is specially set as the input of the *** proposed approach can efficiently learn the energy information and correlation information between antennas and between subcarriers to significantly improve the spectrum sensing *** results demonstrate that the proposed method has a substantial performance advantage over the state-of-the-art spectrum sensing methods in an OFDM A scenario under the 5 g new radio network.

关键词： cognitive radio spectrum sensing OFDMA deep learning 5g new radio

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低复杂度5g-NR LDPC码编译码器设计与FPgA实现

低复杂度5G-NR LDPC码编译码器设计与FPGA实现

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作者：卢黎明北京邮电大学

学位级别：硕士

5g新型无线蜂窝系统的特点是三种主要使用场景:增强型移动宽带(eMBB)、超可靠和低延迟通信(URLLC)以及大规模机器型通信。低密度奇偶校验(LDPC)码作为5g用户数据信道的编码方案,近年来一直被当作热点问题研究,同时,URLLC场景对LDPC码编... 详细信息

5g新型无线蜂窝系统的特点是三种主要使用场景:增强型移动宽带(eMBB)、超可靠和低延迟通信(URLLC)以及大规模机器型通信。低密度奇偶校验(LDPC)码作为5g用户数据信道的编码方案,近年来一直被当作热点问题研究,同时,URLLC场景对LDPC码编译码器的高吞吐量、可变码率和长度以及低复杂度和良好的纠错能力都提出了更高的要求。在本文中以5gNR标准中的LDPC编译码方案为研究背景,研究LDPC译码算法和低复杂度编译码器的硬件实现,具体的研究内容包括:1.提出了一种基于盒加运算的改进译码算法(IBA),通过密度进化和蒙特卡洛仿真给出了相应的最优参数,大大降低了校验节点传递给变量节点消息的不可靠性。仿真结果表明:所提出的IBA算法在保持低译码复杂度的情况下,与现有的NMS和OMS算法相比纠错性能有明显提升,甚至在低码率时的误码率和误帧率会优于置信传播算法,这使其在实际5g LDPC译码应用中更具吸引力。2.针对所提出的IBA算法,提出并实现了新型低复杂度5g NR LDPC编码器和译码器FPgA架构。该架构不仅能支持NR标准中的所有码长和码率,而且仿真测试表明,相比于同类型编译码器不仅保持了高吞吐率和低时延的特性,而且具有更低的资源占用和译码准确度。3.基于“智慧天网”项目,将该FPgA架构在AMD Virtex 7 FPgA VC709上进行上板测试,并进行时序分析和验证。

关键词： 5g new radio LDPC译码算法 FPgA编译码器

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