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A broadband 0.22THz folded waveguide traveling wave tube amplifier has been designed by analyzing its slow wave structure and simulating with PIC code. The folded waveguide traveling wave tube is proposed to be operating at 0.22THz, with a 3 dB bandwidth of more than 10GHz. The gain of this folded waveguide traveling wave tube is to be more than 13 dB, and the beam voltage is 14 kV. The first test...
This paper proposes a GPON-based transmission hierarchy (GTH) for mesh network. An OPNET testbed is constructed to test the performance of GTH on supporting metro aggregation service. From this testbed, the performance of the network and the terminals are got, which will definitely provide some references for optimizing GTH's usage in mesh network.
This paper presents the design, implementation and test results of Burst Mode Receiver (BMRx) for Gigabit Passive Optical Networks (GPON) at 2.488 Gb/s. Unlike the continuous mode transceivers Optoelectronic Integrated Circuit (OEIC), development of BMRx is challenging since the widely varying amplitude and phase of the received bursts have to be recovered consuming minimum overhead in terms of bits...
An obstacle of orthogonal frequency division multiplexing (OFDM) multiple-input multiple-output system is using cyclic prefix (CP) which leads to loss of bandwidth. It is a challenge of the high utilization rate for modern communication systems. In order to eliminate the impact of CP of OFDM, non-orthogonal multiple-modulation (NOMM) is introduced for MIMO system. Relevant error probability and bandwidth...
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