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Electronic nautical chart is widely used in sailing to ensure the safety. In this paper, we focus on effective visualization of vector-based electronic nautical chart with spatial indexing enhancement. Spatial indexing has been widely used in spatial data management to improve the performance of data retrieval. Spatial indexed system electronic nautical chart is constructed with R-tree. With the electronic...
This paper proposes a novel three-dimensional (3D) cylinder geometry-based stochastic model (GBSM) for non-isotropic multiple-input multiple-output (MIMO) Rice fading channels in high-speed train (HST) wireless communications under deep cutting scenarios. Using a validated approximation, the closed-form expression of the space-time correlation function (ST CF) of the proposed GBSM is obtained. Different...
In high-speed train wireless communication systems, the underlying channels are essentially non-stationary due to fast-varying channel conditions. For the design, performance evaluation, and optimization of high-speed train wireless communication systems, it is a prerequisite to develop non-stationary channel models with time-varying small-scale fading parameters. In this talk, we propose novel non-stationary...
In this paper, we propose a cross-layer design framework combining adaptive modulation and coding (AMQ) with hybrid automatic repeat request (HARQ) based on rate-compatible low-density parity-check codes (RC-LDPC) in multiple-input multiple-output (MIMO) fading channels with estimation errors. We derive the expressions for the throughput of the system and investigated the effect of channel estimation...
To produce multiple uncorrelated Rayleigh fading waveforms is often required for simulating wideband fading channels, multiple-input multiple-output (MIMO) channels, and diversity-combined fading channels. In this paper, a new parameter computation method for deterministic sum-of-sinusoids (SoS) channel simulators is proposed to guarantee the uncorrelatedness between different simulated Rayleigh fading...
The spatial correlation properties of multiple input multiple output (MIMO) channels can greatly affect the performance of MIMO systems. It is therefore important to develop MIMO channel models which can provide accurate spatial correlation characteristics. This paper starts with the brief review of MIMO channel models and then concentrates on investigating the spatial correlation characteristics...
This paper proposes a correlation based double directional stochastic model (CBDDSM) for indoor Multiple Input Multiple Output (MIMO) Ultra Wideband (UWB) propagation channels in the passband domain. Both angle of arrival (AoA) and time of arrival statistics are taken into account in the modelling procedure. Spatial correlations are introduced into the amplitude matrices and delay matrices of the...
Error models characterize the statistics of bursty error sequences encountered in digital wireless channels and are therefore, useful for the cross-layer design of wireless networks. In this paper, target error sequences are generated by computer simulations of multiband orthogonal frequency division multiplexing (MB-OFDM) ultra wideband (UWB) systems. A corresponding generative model is then developed...
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