This paper is focused upon implementation aspects of a real-time simulator applicable to narrowband land mobile satellite channels. The satellite channel is mainly affected by shadowing. If a direct signal component exists (line of sight (LOS) conditions), the channel is in a so-called good/clear state and the probability density function (pdf) of the signal amplitude is Rician distributed. The...

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Überlegungen zur digitalen Archivierung von CAD-Plänen

Multiple-Input Multiple-Output (MIMO) systems have been emerged as a technical breakthrough for high-data-rate wireless transmission. The performance of MIMO system can be improved by using different antenna selection so as to provide spatial diversity. In this paper, the performance of MIMO system over AWGN (Additive White Gaussian Noise) and Rician fading channels with ZF receiver is analyzed...

The ergodic capacity of various fading channels such as Rayleigh and Rician fading channels has been studied for a long time [1], [2]. Some closed-form expressions of the fading channel capacity have been obtained in terms of a higher transcend function of Meijer’s G function [3] or triple summations of the Poisson distribution [2]. Unfortunately, those representations are somewhat complex and ...

In this paper, we theoretically study the bit error rate (BER) performance of OFDM systems with MDPSK modulation for subchannels in frequencyselective flat Rician fading and additive white Gaussian noise (AWGN). Both the Rayleigh and Rician fading conditions are considered. The differential detection technique is used to avoid the need of a complex equalization process. Circular prefixes are ad...

This paper investigates a hybrid satelliteterrestrial cooperative relaying communications network (HSTCN) under independent and non-identical shadowed Rician and Nakagami-m fading channels. It evaluates the performance of such a network using amplify-and-forward (AF) cooperative relaying protocol. The maximal ratio combining (MRC) technique is used at the destination to combine the signals rece...

In this paper, the wireless system consisting of macrodiversity selection combining (SC) receiver and two microdiversity SC receivers under the influence of small scale fading and large scale fading, as well as co-channel interference is observed. Small scale fading has Weibull distribution. Correlated large scale fading is described by Gamma distribution. Co-channel interference is disturbed b...