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A novel scheme is proposed to extend the pulse duration based on a programmable dispersion loop. The repetition period is 1024-fold increased by a magneto-optic switch and the duration is recirculated by 50 times.
A fast and easy to implement index-based parallel burst scheduler for OBS network is proposed. A 16-channel scheduler with scheduling time of 33.3ns per burst request is demonstrated in FPGA.
The burst control packet (BCP) process time in the OBS core node is very important for the OBS networks. Although several OBS testbeds have been reported, the BCP process time in core node is still not fast enough. In this article, a new high-speed OBS core node BCP processor based on FPGA is proposed. In the processor, a new valid wavelength scheduling algorithm is created. Not only does it have...
This paper proposes a novel preamble structure and a timing synchronization method for OFDM systems. The preamble structure has both properties of delayed and symmetric correlations which can afford accurate time and frequency synchronization simultaneously. A new timing metric is also proposed according to the preamble structure, which is the production of the modulus of delayed and symmetric correlation...
Multiple-input multiple- output (MIMO) and orthogonal frequency division multiplexing (OFDM) are two key techniques for broadband wireless mobile communications. In order to provide accurate channel state information (CSI) to support MIMO-OFDM transmission in doubly-selective fading channels, we propose the robust channel estimator based on two-dimensional enhanced discrete-time Fourier transform...
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