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To alleviate the adverse effect of the multipath fading, we need to estimate the required fading margin for the link budget analysis. Compared with the Monte Carlo simulations, the theoretical analysis can estimate the system performance more rapidly and precisely. This paper studies the outage performance for selection combining based on the generalized correlated Weibull distribution with arbitrary...
Cooperative diversity is a promising technique to form virtual antenna array without using collated multiple antennas. In this paper, we consider a joint selection scheme in multi-source multi-relay networks, in which the best source node and the best relay node are selected to access channel. The destination node uses this scheme to reduce the excessive burden of maximal ratio combining (MRC) with...
This paper presents an novel iterative generalized selection combining (IGSC) for amplify-and-forward (AF) cooperative communications based on error detection and rearranging the SNR of indirect link in decreasing order of magnitude. The destination node decides whether to accept incoming path or not in every time frame to reduce the excessive burden of maximal ratio combining (MRC) with all diversity...
Cooperative diversity has recently been proposed as a promising technology to achieve spatial diversity in wireless networks. In this paper, we analyze the performance of SNR-based hybrid decode-amplify-forward (HDAF) relaying cooperative diversity networks over independent non-identical flat Rayleigh fading channels with maximum ratio combining (MRC) technique. Closed-form expressions for the outage...
Cooperative diversity has recently been proposed as a promising technology to achieve spatial diversity in wireless networks. In, the performance of incremental amplify-and-forward (AF) relaying cooperative diversity networks is analyzed. In this paper, a new relaying scheme in conjunction with incremental decode-and-forward (DF) relaying and selective DF relaying strategies, termed incremental-selective...
Unitary space-time modulation (USTM) is ideally suited for time independent rapid fading channels because it can work well without channel state information (CSI). In reality the fading coefficients are always correlated, in which condition differential unitary space-time modulation (DUSTM) was proposed. However, it also meets with the too high bit error rate (BER) problem when the signal-to-noise...
In this paper, a new antenna shuffling scheme which can improve both diversity and multiplexing gains for double space time transmit diversity (DSTTD) system is proposed. This scheme needs low computational complexity and limited feedback information. Based on the theoretical analysis, we can also know that achieving more diversity gain dose not opposite to achieve more multiplexing gain. The performance...
The double space time transmit diversity (DSTTD) system was proposed to obtain both transmit diversity gain and spatial multiplexing gain simultaneously. The DSTTD scheme outperforms general multiple input multiple output (MIMO) scheme, however the performance can be enhanced by using receive antenna selection (RAS) scheme and transmit antenna shuffling (TAS) scheme. In this paper, we realized the...
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