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We proposed a multi-stage electrical-PMD-compensator for coherent systems. The method is format-independent and capable of mitigating higher-order PMD. We show negligible penalty after compensation in a 100-Gb/s system with 15 ps average DGD.
We proposed a PMD monitoring/compensation method in frequency domain for coherent system. With 15 ps of average DGD, the PMD induced penalty for 100-Gbit/s QPSK system is reduced by 9 dB at symbol-error-ratio of 10−3.
We demonstrated the QPSK signal generated by a single phase-modulator (PM-QPSK) is more tolerant to fiber nonlinearity than that generated by the Mach Zehnder Interferometer (MZI-QPSK). Simulation of WDM system at 28-Gsymbol/s per polarization shows PM-QPSK outperforms MZI-QPSK in coherent systems when polarization multiplexing and dispersion management is used.
In this paper, we propose a spacial time slot scheduling algorithm for relay operation to improve the throughput performance of millimeter-wave wireless personal area network (mmWave WPAN) systems which employ directional antenna. The upcoming mmWave WPAN is designed for high definition TV (HDTV) transmission, high speed wireless docking and gaming, etc. Based on the fact that the significant path...
This paper investigates the impact of adjacent channel interference (ACI) and co-channel interference (CCI) on the error performance and throughput of a multi-Gbps millimeter-wave wireless personal area network (WPAN) system in both residential multipath line-of-sight (LOS) and non-LOS (NLOS) environment. It is found that the ACI that causes 0.5dB degradation in signal-to-noise ratio (SNR) for BPSK,...
This paper proposes a virtual time-slot allocation (VTSA) throughput enhancement scheme with multiple modulation methods to realize a multi-Gbps time division multiple access (TDMA) wireless personal area network (WPAN) system in a realistic millimeter-wave residential multipath environment. The VTSA scheme allows multiple communication links in the network to simultaneously use the same time-slot,...
This paper investigates the adjacent channel interference (ACI) resistance of a multi-Gbps single carrier wireless personal area network (WPAN) operating in the 60 GHz millimeter-wave band. The significance of performance degradation due to ACI is investigated corresponding to varying factors such as types of modulation and radio frequency (RF) hardware impairments. The level of modulation scheme...
In order to design a simple and highly accurate channel estimator for wireless personal area network systems, this paper proposes Golay sequence aided channel estimation. To evaluate the performance of proposed channel estimation, bit error rate performance of single-carrier transmission with frequency-domain equalization has been analyzed by computer simulation. When 8PSK modulation and Reed-Solomon...
This paper proposes a cross-layer unequal error protection (UEP) scheme that supports compressed video transmission in 60 GHz wireless personal area network (WPAN) systems. The proposed scheme combines MAC layer aggregation with PHY layer hierarchical modulation mapping, which offers better visual-quality transmission over conventional equal error protection (EEP). Computer simulations show that under...
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