WCDMA radio-over-fibre transmission experiment using electro-absorption transceiver

et al. 2023

Electronics

This paper explores applications of the coordinated multi-point (CoMP) architecture operation of enhanced node B (eNB) in wireless communication networks featuring device-to-device (D2D) signaling. This is applied to cellular phone coverage for rapid mass transit systems, such as the Taiwan high speed rail transport system, and indoor public environments. The paper is based on formulas pertaining to the link between budget design and guidelines, as well as principles and theories of engineering practice, allowing designers to analyze and fully control the uplink and downlink signals and output power of fiber repeaters linking cellular phones to base stations. Finally, we employ easily installed cellular-over-fiber optic solutions for a small cell enhancement (SCE) system with novel architecture based on a leakage coaxial cable system using LTE-A technology. As a result, we successfully applied enhanced coverage designs for distributed antenna systems. These can be used to create self-organizing networks (SoN) for an Internet of Things.

Section: An Add-on Solution Consisting Of a New 5g Fr On The Empty Sidementioning

confidence: 99%

Evolution towards Coordinated Multi-Point Architecture in Self-Organizing Networks for Small Cell Enhancement Systems

et al. 2023

Electronics

“…In in-building RoF systems, better coverage and capacity are required in hot spot areas, such as airports, hotels and shopping malls as well as in office complexes. The importance of in-building cellular networks increases to give users higher data rates and broadband transmission with the possibility to multi-media services [2]. However, there is still a deficiency in the key issues for reduction in cost, size and system complexity.…”

Section: Introductionmentioning

confidence: 99%

Compact feedforward optical transmitter without adaptive vector modulator

Moon

2008 International Topical Meeting on Microwave Photonics Jointly Held With the 2008 Asia-Pacific Microwave Photonics Conferenc

et al. 2008

We have developed a compact feedforward optical transmitter using an integrated optical module for in-building radio-over-fiber systems. The optical assembly contains a distributed-feedback laser diode, p-i-n photodiode, and 45 degree-angled beam splitter. The experimental results show that the IMD3 of uncooled laser is suppressed by 24.1 dB and spurious-free dynamic range is enhanced by 7 dB. Dispersionfree transmission experiment is implemented.I.

“…RoF is a promising technique for the deployment of highly flexible and cost-effective radio access system [2]. In these systems, radio frequency signals are modulated onto an optical carrier at a central station, and then distributed to remote base stations through optical channel.…”

Section: Introductionmentioning

confidence: 99%

Systematic design and realization of the optical feedforward transmitter based on microwave circuit modeling

Moon

Jang

Micro & Optical Tech Letters

et al. 2008

We have systematically designed and realized the optical feedforward transmitter using microwave circuit model of distributed‐feedback laser diode (DFB LD) based on rate equations. Through the system‐level simulation for the optical feedforward method, the nonlinearity of DFB‐LD is analyzed, and the optimized characteristics of the RF components in the system are confirmed by using a microwave simulator. The experimental and simulated results show the reduced distortion products and enhanced spurious‐free dynamic ranges are in good agreement at 2.4 GHz. These results are analyzed as the evaluation parameters for the miniaturization and optimization of the feedforward compensation method in radio‐over‐fiber systems. © 2008 Wiley Periodicals, Inc. Microwave Opt Technol Lett 51: 192–195, 2009; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.24007