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- W2080193956 abstract "Spatiotemporal equalization is a technique to compensate the intersymbol interference (ISI) due to multipath effects by means of information about the received signal on both the time axis and the spatial axis. In this paper, an application of the spatiotemporal equalizer to high-speed wireless communications such as wireless LAN is considered. In order to reduce the total number of weights, a spatiotemporal equalizer using a cascade connection of an adaptive array and a decision feedback equalizer (DFE) is examined. Since the error characteristic surface in the minimum mean square error (MMSE) criterion weight calculation for the spatiotemporal equalizer with a cascade configuration is a fourth-order function of the weight, there is a possibility of encountering a local minimum in addition to the global minimum. In this paper, in order to prevent the weights from falling into a local minimum, the weights of the adaptive array and the DFE are computed individually in two steps. In addition, a captured path is selected adaptively by means of an adaptive array based on the estimated complex instantaneous impulse response of the propagation path. In this way, the proposed spatiotemporal equalization method can handle various propagation paths. The characteristics of the method are evaluated by computer simulation. It is confirmed that the proposed method exhibits excellent characteristics with few weights in various propagation environments. © 2003 Wiley Periodicals, Inc. Electron Comm Jpn Pt 2, 86(10): 25–35, 2003; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/ecjb.10186" @default.
- W2080193956 created "2016-06-24" @default.
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- W2080193956 date "2003-09-10" @default.
- W2080193956 modified "2023-09-25" @default.
- W2080193956 title "A spatiotemporal equalization method with cascade configuration of an adaptive antenna array and a decision feedback equalizer" @default.
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- W2080193956 doi "https://doi.org/10.1002/ecjb.10186" @default.
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