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학술지 Improvement of the Transmission Performance in Multi-IF-over-Fiber Mobile Fronthaul by Using Tone-Reservation Technique
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저자
성민규, 한찬교, 조승현, 정환석, 이종현
발행일
201511
출처
Optics Express, v.23 no.23, pp.29615-29624
ISSN
1094-4087
출판사
Optical Society of America(OSA)
DOI
https://dx.doi.org/10.1364/OE.23.029615
협약과제
15ZI1300, 광 기반 Compact Radio & Dense Digital 이동통신 기지국 핵심기술 개발, 이종현
초록
We demonstrate the improvement of the transmission performance based on tone-reservation technique in a multiple intermediatefrequency-over-fiber (IFoF) based mobile fronthaul. The tone-reservation technique can suppress nonlinear distortion by eliminating the high peak components of orthogonal frequency-division multiplexing (OFDM) signal. To prevent the regrowth of peak, we employ tone-reservation after multiplexing IF carriers. Furthermore, we use an out-of-band signal as the reserved tones to avoid any modification of a mobile signal. The impact of the number of IF carriers on peak-To-Average power ratio (PAPR) characteristics is presented via numerical simulation. For the multi-IFoF based mobile fronthaul, we experimentally investigate the transmission performance of 36-IF carriers of the long term evolution-Advanced (LTE-A) signals mapped with 64-quadrature amplitude modulation (QAM). It is clearly observed that the clipping-induced nonlinear distortion is dramatically suppressed by using tone-reservation. As a result, the transmission performance of 36-IF carriers of the LTE-A signal is improved by an error-vector-magnitude (EVM) of 4% (from 9.7% to 5.7%) after 20-km transmission.
KSP 제안 키워드
Long term Evolution(LTE), Long term evolution-advanced(LTE-A), Mobile fronthaul, Numerical simulations, Peak-to-Average-Power-Ratio(PAPR), Quadrature-amplitude modulation(QAM), nonlinear distortion, out-of-band, performance based, transmission performance