Scholarlink

<p>The advancement of 5G communication requires advanced modulation and high-power optical signals to ensure bandwidth utilization and acceptable signal-to-noise ratios for long-reach transmission. A quadrature amplitude modulation (QAM) based 16 channel dense wavelength division multiplexing (DWDM) radio over fiber system (RoF) is presented and evaluated in this paper. The maximum likelihood sequence equalizer (MLSE) is used at the digital signal processing receiver along with the combination of single mode fiber, dispersion compensation fiber and optical phase conjugation technique in the optical link. The system is evaluated for 16, 32 and 64 QAM data transmission with 100 and 50&#xa0;GHz channel spacing of the DWDM-RoF system. Results confirm successful 192&#xa0;Gbps 16 QAM data transmission over 330&#xa0;km (100&#xa0;GHz spacing) and 270&#xa0;km (50&#xa0;GHz spacing). The use of MLSE upgrades the system’s transmission ability. Enhanced performance for 32 and 64 QAM signals confirms the system’s potential for long-haul networks.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Optimization of QAM modulated 16-channel DWDM-RoF system employing 3rd order nonlinearity compensation and MLSE equalization to transmit 192 Gbps data over long range through fiber

  • 期刊论文

  • 发表日期：

    2025年6月10日

查看全文
  • Nilanjana Sarkar,
  • Barnali Pal,
  • Bubai Dutta,
  • Nairanjana Sarkar,
  • Tapas Kumar Chanda,
  • Ardhendu Sekhar Patra

摘要

The advancement of 5G communication requires advanced modulation and high-power optical signals to ensure bandwidth utilization and acceptable signal-to-noise ratios for long-reach transmission. A quadrature amplitude modulation (QAM) based 16 channel dense wavelength division multiplexing (DWDM) radio over fiber system (RoF) is presented and evaluated in this paper. The maximum likelihood sequence equalizer (MLSE) is used at the digital signal processing receiver along with the combination of single mode fiber, dispersion compensation fiber and optical phase conjugation technique in the optical link. The system is evaluated for 16, 32 and 64 QAM data transmission with 100 and 50 GHz channel spacing of the DWDM-RoF system. Results confirm successful 192 Gbps 16 QAM data transmission over 330 km (100 GHz spacing) and 270 km (50 GHz spacing). The use of MLSE upgrades the system’s transmission ability. Enhanced performance for 32 and 64 QAM signals confirms the system’s potential for long-haul networks.