Dynamic Bandwidth Allocation in a Reconfigurable and Converged Access Network

In this paper, we propose a reconfigurable and converged optical access network architecture with dynamic bandwidth allocation. The network proposes the co-existence of long term evolution (LTE), wireless interoperability for microwave access (WiMax) and ultra-wide band (UWB) technologies. LTE is considered for next generation mobile telephony, WiMax is designed mainly for data transmission. In addition, UWB could be used for high definition (HD) audio and video communication applications. All technologies are generated by using VPI transmission Maker and simulated with 16 QAM modulation schemes. All the signals qualities are investigated with the error vector magnitudes (EVMs). LTE/WiMax/UWB over single mode fibre (SMI) is examined and maximum limit are achieved at 76km with an EVM of 18.2dB, 58km with an EVM of -25dB and 65km with an EVM of -19dB for LTE, WiMax and UWB respectively. It is also realized that the chromatic dispersion needs to be compensated for long transmission systems (above 100km).