A Novel Structure Design Method of Delta-Sigma Modulator based on Genetic Algorithm for Mobile Fronthaul

Tan, Dayong; Zhong, Linsheng; Zou, Yang; Zhang, Jie; Lu, Weiqi; Dai, Xiaoxiao; Yang, Qing; Fu, Songnian; Cheng, Mengfan; Deng, Lei; Liu, Deming

doi:10.1364/ofc.2022.m1c.3

Cited by 3 publications

(2 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…. a-f represent the feedback coefficients of the delta-sigma modulator, which can be obtained using R. Schreier's toolbox [29] or genetic algorithm [30,31]. Based on the aforementioned principles, we obtain the NTF curve and the pole-zero diagram of the delta-sigma modulator which is illustrated in Fig.…”

Section: A Principle Of Delta-sigma Modulationmentioning

confidence: 99%

Design Optimization of Feedforward Equalization for Mobile Fronthaul Based on Delta-Sigma Modulation With High-Order QAM Signals

Li,

Yuan,

Cai

2024

IEEE Photonics J.

View full text Add to dashboard Cite

Delta-sigma modulation can be used as a high spectral efficiency interface in place of conventional common public radio interface (CPRI) in mobile fronthaul (MFH) networks. However, inter-symbol interference (ISI) becomes more difficult to be mitigated in the networks due to bit quantization in delta-sigma modulation. In this paper, we propose a novel feedforward equalization (FFE) scheme based on the least mean square (LMS) algorithm for MFH networks employing 4th-order delta-sigma modulation technology with 1 and 2 bit quantization to alleviate the performance degradation caused by ISI. The performance of both 1-bit and 2-bit quantization systems employing the proposed FFE scheme with different tap lengths and step sizes has been systematically investigated. Our results show that, under the minimum computational complexity, the maximum transmission capacity can reach 8.98Gbps when using the FFE scheme with 11 taps and step size of 3 × 10 -5 or 3.5×10 -5 and the average error vector magnitude (EVM) can be minimized to a level less than 0.032 with 19 taps and step size of 4×10 -5 or 4.5×10 -5 for 1-bit quantization system while for 2-bit quantization system, the maximum transmission capacity of 11.4Gbps can be obtained when employing the FFE scheme with 19 taps and step size of 3.5×10 -5 and the minimal average EVM less than 0.01 can be achieved with 19 taps and step size of 4×10 -5 . More hopefully, this work provides guidelines for optimizing the equalization scheme based on the requirements of EVMs, capacity, and computational complexity.

show abstract

Section: A Principle Of Delta-sigma Modulationmentioning

confidence: 99%

Design Optimization of Feedforward Equalization for Mobile Fronthaul Based on Delta-Sigma Modulation With High-Order QAM Signals

Li,

Yuan,

Cai

2024

IEEE Photonics J.

View full text Add to dashboard Cite

show abstract

“…123−159 In order to meet this long-transmission and large-capacity broadband optical f iber communication, many universities, research institutes, telecom equipment manufacturers, and telecom operators in China have invested huge f inancial resources to investigate it. As can be seen from the top international conference on optical fiber communication (OFC 2022), in the field of optical fiber communication research, major Chinese universities include Huazhong University of Science and Technology, 160 Beijing University of Posts and Telecommunications, 161 Fudan University, 162 Shanghai Jiao Tong University, 163 Peking University, 164 University of Electronic Science and Technology of China, 165 University of Science and Technology of China, 166 University of Science & Technology Beijing, 167 Sun Yat-Sen University, 168 Xi'an University of Posts and Telecommunications, 169 Research institutes include China Mobile Research Institute, 170 China Information Communication Technologies Group Corporation, 171 Nokia Bell Laboratories (Shanghai), 172 Peng Cheng Laboratory, 173 Telecommunication Giants Huawei, 174 ZTE, 175 FiberHome, 176 etc. They have conducted in-depth research on ultrahigh-speed long-distance transmission, especially in coherent light detection technology based on digital signal processing, and achieved a series of record-breaking research results.…”

Section: Research Progress On Long-distance Transmissionmentioning

confidence: 99%

High-Speed Optical Fiber Communication in China

2022

ACS Photonics

View full text Add to dashboard Cite

In the past decade, China has made great investments in studying photonics and photocommunication with larger communication capacity, better performance, and lower cost. After years of heavy investment, great progress has been made in academic research, manufacturing capabilities, and optical network scale. The number of papers written and published by researchers in China in the world’s top optical fiber communication conferences has increased year by year, accounting for about 10% of the total number of papers. These high-level articles show that scientists in China have made great strides in photonics research in devices, systems, and networks. On the other hand, photonics industrialization in China is getting more competitive with its large market scale and strong production capacity.

show abstract

Quadruplex Independent Vector Microwave Signal Transmission Over 100 km Using DSM and Optical Polarization Multiplexing

Li,

Wang,

Yan

et al. 2025

J. Lightwave Technol.

View full text Add to dashboard Cite

A Novel Structure Design Method of Delta-Sigma Modulator based on Genetic Algorithm for Mobile Fronthaul

Abstract: We proposed a novel structure design method of delta-sigma modulator based on genetic algorithm. Compared to the traditional method, SNR of the restored signal under the optimized structure at the receiver is increased by ~6dB.

Cited by 3 publications

References 3 publications

Design Optimization of Feedforward Equalization for Mobile Fronthaul Based on Delta-Sigma Modulation With High-Order QAM Signals

Design Optimization of Feedforward Equalization for Mobile Fronthaul Based on Delta-Sigma Modulation With High-Order QAM Signals

High-Speed Optical Fiber Communication in China

Quadruplex Independent Vector Microwave Signal Transmission Over 100 km Using DSM and Optical Polarization Multiplexing

Contact Info

Product

Resources

About