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Proposed in this paper is a general parasitic-compatible LCR matching method suitable for $N$-path filter. Analysis of a conventional $L$-type matching is extended to accommodate the case of the $N$- path filter, where the different impedances of the band limited input matching network at multiple local oscillation (LO) harmonic frequencies have to be taken into consideration. Compared to the ideally...
One enhanced conformal FDTD method is proposed for characterizing transient responses of arbitrary PEC wedges illuminated by an electromagnetic pulse (EMP), and one low-cost modified technique is introduced for effectively suppressing numerical dispersion error with much high accuracy achieved. Excellent agreement is also obtained between our captured diffraction field of the wedge and that of uniform...
In LTE downlink multiple-input multiple-output (MIMO), eigen based beamforming (EBB) is a promising approach for single-user scenario, while block diagonalization based beamforming (BDBF) eliminates intra-cell interferences significantly for multi-user scenario. However, both of them neglect inter-cell interferences which may lead system performance degradation. This paper presents an interference...
To further improve and satisfy the spectral efficiency requirements addressed in LTE-Advanced system, in this paper, a Coordinated Multi-Cell MU-MIMO scheme is proposed to achieve this goal, especially to enhance the cell-edge user(the 5% of user throughput) throughput substantially. In our proposed cooperative scheme, we adopt multi-cell block diagonalization (BD) algorithm to perform joint procession...
Mobile WiMAX as an OFDMA (Orthogonal Frequency Division Multiple Access) mobile broadband air interface is a solution to the requirements for mobile internet services. It has been accepted by ITU as 3G standard last year. The work presented in this paper focuses on evaluation of the Mobile WiMAX system performance in which Full-Queue and VoIP traffic are considered both in downlink and uplink We have...
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