2,094 research outputs found
Performance of MB-OFDM UWB and WiMAX IEEE 802.16e converged radio-over-fiber in PON
Experimental results about the performance of converged radio-over- fiber transmission including multiband- OFDM UWB and WiMAX 802.16e wireless over a passive optical network are reported in this paper. The experimental study indicates that UWB and WiMAX converged transmission is feasible over the proposed distribution set-up employing a single wavelength. However, the results indicate that there is an EVM penalty of 3.2 dB for a UWB 10 km SSMF transmission in presence of WiMAX wireless
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Towards efficient and reconfigurable next-generation optical fronthaul networks for massive MIMO
This paper summaries our recent research on digital radio over fibre (DRoF) based optical fronthaul links and
experimentally demonstrates a novel last-mile wireless coverage system incorporating data compression, time-division
multiplexing (TDM) based packetization, and wavelength division multiplexing (WDM) based optical transmission.
Compression reduces the fronthaul data rate required per service by a factor of 3 when compared with the common public
radio interface (CPRI) standard, enabling efficient radio resource distribution over optical fibre infrastructure. The new
packetization mechanism and WDM architecture enable fully reconfigurable resource allocation in a fronthaul network for
20MHz-bandwidth RF inputs with 64x64 MIMO carried over an aggregated compressed optical data rate of 32Gbps using
4 wavelengths. The experimental results show over 40dB RF dynamic range with < 8% error value magnitude (EVM) for
the 64 quadrature amplitude modulation (64-QAM) input signals across all the WDM channels while the lowest EVM is
less than 2%. Meanwhile, this field-programmable gate array (FPGA) based DRoF system allows flexible, software
definable and easy-scalable dynamic antenna resource allocatio
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