Introduction on IMT-2020 5G Trials in China

Dong, Lei; Zhao, Hongyi; Chen, Yan; Chen, Dageng; Wang, Tianxiang; Lü, Lei; Zhang, Bijun; Hu, Liang; Li, Gu; Li, Bojie; Yang, Huilian; Shen, Hui; Tian, Tao; Luo, Zhendong; Wei, Kejun

doi:10.1109/jsac.2017.2710678

Cited by 36 publications

(22 citation statements)

References 38 publications

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“…Sparse code multiple access (SCMA) is a new multiple access technology of 5G [15]; it synthesizes the ideas of code division multiple access (CDMA) and orthogonal frequency division multiple access (OFDMA) [16], realizes the frequency domain non-orthogonal multiple access (NOMA) [17], and provides a reliable technical method for multiuser access and detection in 5G application. SCMA has the characteristics of large capacity, low delay, multi-connection and strong anti-multipath ability [18][19][20], which can better meet the needs of 5G for higher spectral efficiency [21,22]. SCMA technology is an improvement over the basis of low density multiple access technology; its application greatly improves the performance of multi-user access and detection [23,24].…”

Section: Introductionmentioning

confidence: 99%

A Multi-Node Detection Algorithm Based on Serial and Threshold in Intelligent Sensor Networks

Zhang

Zhao

et al. 2020

Sensors

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With the continuous progress of science and technology, intelligent wireless sensor network (IWSN) communication has become indispensable in its role in production and life because of its convenient network settings and flexible use. However, with the widespread availability of intelligent wireless sensor networks, the use of many wireless sensor nodes constitutes a multi-node wireless communication system, which turns the accuracy and low complexity of multi-node detection in sensor networks into a problem. Although the traditional algorithm has excellent performance, it cannot give consideration to both accuracy and complexity. Therefore, a maximum logarithm message passing algorithm based on serial and threshold (S-T-Max-log-MPA) for multi-mode detection in IWSN is proposed in this paper. In this algorithm, the threshold is used to determine the necessary conditions of sensor node stability first, and then the sensor node information updating is integrated into the resource node information updating, so that the system can maintain good accuracy, performance, and change the situation of poor system accuracy at low threshold. Compared with the traditional algorithm, the proposed algorithm significantly changes the algorithm complexity reduction rate of the system multi-node detection. Simulation results show that the algorithm has a good balance between accuracy and complexity reduction rate.

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Section: Introductionmentioning

confidence: 99%

A Multi-Node Detection Algorithm Based on Serial and Threshold in Intelligent Sensor Networks

Zhang

Zhao

et al. 2020

Sensors

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“…In recent years, multiple-input-multiple-output (MIMO) technology has been paid substantial attention for the fifth generation (5G) wireless communication systems due to its capability of increasing bandwidth efficiency and reliability [1]. However, conventional MIMO systems employ the same number of antennas and radio frequency (RF) chains, implying that enlarging the scale of MIMO system needs to increase both the number of antennas and RF chains simultaneously, which may lead to significantly high power consumption and exorbitant hardware costs.…”

Section: Introductionmentioning

confidence: 99%

Design of Reconfigurable SDR Platform for Antenna Selection Aided MIMO Communication System

Zhang

Zhong

et al. 2019

IEEE Access

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In recent years, antenna selection (AS) has become one of the most popular research topics for massive multiple-input multiple-output (MIMO) system due to its capability of reducing the number of radio frequency chains utilized for MIMO communications, while remaining the MIMO advantages, such as increased bandwidth efficiency and reliability. In this paper, an efficient norm-based AS (NBAS) algorithm is investigated and implemented in the software defined radio (SDR) MIMO communication platform, which consists of field-programmable gate arrays (FPGAs). Owing to the high freedom and fast reconfigurable FPGA hardware, the SDR MIMO communication platform is capable of developing prototype of NBAS-aided MIMO system. More specifically, the implemented NBAS aided SDR MIMO system is capable of achieving uplink communication from users to the base station via time division duplex (TDD). A time-varying fading channel generation model is designed for SDR MIMO platform to enrich our experimental results. Additionally, a novel multiplexer (MUX) circuit module is designed and implemented to enhance the hardware performance of the FPGA in term of delay and resource usage. The results show that by implementing the low-complexity NBAS, the channel capacity performance of the SDR MIMO system can be significantly improved by around 15%. It is also showed that our proposed optimized MUX circuit intellectual property may reduce the critical path delay by about 2.16 ns, and save at lease 3% hardware resources in SDR FPGA. INDEX TERMS Multiple-input multiple-output, antenna selection, software defined radio, FPGA.

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“…3GPP is following a similar timeline for 5G standardization process [3]. Early 5G commercial deployments are announced by various [4], [5]. However, there are also concerns that large-scale 5G deployments may require high level of investments by operators.…”

Section: Introductionmentioning

confidence: 99%

On Performance Analysis of Single Frequency Network With C-RAN

2019

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Centralized-RAN (C-RAN) is an architectural trend that uses resource sharing and a set of interference mitigation techniques to reduce capital and operational expenditures for mobile network operators (MNOs). One of the technical enablers of a C-RAN solution is single frequency network (SFN) that curbs the interference and allows MNOs to transmit over single frequency across coordinated cells. One of the main advantages of SFN is that it reduces the number of handovers between neighboring cells while improving the overall system performance. In contrast to previous approaches that demonstrate some of the most prominent C-RAN features, in this paper, we first investigate two different SFN deployment scenarios' characteristics, benefits, and limitations. Second, we perform a simulation analysis of non-SFN and SFN without joint scheduling to observe signal to interference ratio heatmap distribution of the experimental test-site using similar system configurations. Finally, we perform an experimental analysis of joint scheduling in SFN based on coordinated inter baseband units scenario using C-RAN in a realistic environment. The experimental results are tested on a real operating site of a major MNO's infrastructure in Turkey. Through experimental results, we show overall performance gains of SFN feature in terms of different key performance indicators that are obtained from coordinating remote radio units in an SFN cell. Finally, we discuss about the main takeaways, lessons learned, and challenges of the considered SFN implementation.

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Introduction on IMT-2020 5G Trials in China

Cited by 36 publications

References 38 publications

A Multi-Node Detection Algorithm Based on Serial and Threshold in Intelligent Sensor Networks

A Multi-Node Detection Algorithm Based on Serial and Threshold in Intelligent Sensor Networks

Design of Reconfigurable SDR Platform for Antenna Selection Aided MIMO Communication System

On Performance Analysis of Single Frequency Network With C-RAN

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