Abstract

An efficient multi-channel hybrid fiber-radio scheme for both down and up-link paths is demonstrated based on digitized RF-over-fiber technique, where the frequency translation stages are implemented using a single analog-to-digital converter (ADC) and digital-to-analog converter (DAC) instead of mixers and local oscillators. The simultaneous transmission of GSM, UMTS and WiMAX services is demonstrated with error-free reception. With a minimum sampling rate of 50 MHz and an overall optical data rate of 400 Mb/s, all the three wireless services can be successfully recovered in a full-duplex transmission. In the downlink direction, the performance is dependent on the amount of amplification required for the wireless signal at the desired carrier frequency. The amount of amplification on the other hand is dependent on the location of the wireless signal within the Nyquist zone which increases significantly with the order of the Nyquist zone. In the uplink direction, the performance is limited by inter-channel interference as a result of spectra aliasing of the regenerated IF signals which limits the signal-to-noise-ratio. With proper system design that optimizes downlink amplification and minimizes inter-channel interference, simultaneous multi-service transmission using digitized RF-over-fiber technique is able to improve spectral efficiency and minimize hardware count.

© 2011 IEEE

Complexity-reduced digital predistortion for subcarrier multiplexed radio over fiber systems transmitting sparse multi-band RF signals

Yinqing Pei, Kun Xu, Jianqiang Li, Anxu Zhang, Yitang Dai, Yuefeng Ji, and Jintong Lin
Opt. Express 21(3) 3708-3714 (2013)

Experimental investigation on multi-dimensional digital predistortion for multi-band radio-over-fiber systems

Hao Chen, Jianqiang Li, Kun Xu, Yinqing Pei, Yitang Dai, Feifei Yin, and Jintong Lin
Opt. Express 22(4) 4649-4661 (2014)

Experimental demonstration of multi-Gbps multi sub-bands FBMC transmission in mm-wave radio over a fiber system

Hum Nath Parajuli, Haymen Shams, Luis Guerrero Gonzalez, Eszter Udvary, Cyril Renaud, and John Mitchell
Opt. Express 26(6) 7306-7312 (2018)

Experimental demonstration of high spectral efficient 4 × 4 MIMO SCMA-OFDM/OQAM radio over multi-core fiber system

Chang Liu, Lei Deng, Jiale He, Di Li, Songnian Fu, Ming Tang, Mengfan Cheng, and Deming Liu
Opt. Express 25(15) 18431-18441 (2017)

Digital radio-over-fiber system with multi-pulse Manchester encoding-assisted delta-sigma modulation

Seunghyun Jang, Bonghyuk Park, and Songcheol Hong
Opt. Express 25(7) 8335-8349 (2017)