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In this paper, we consider a multi-relay Demodulate-and-Forward (DMF) cooperation system, in which the high order superposition modulation (SM), superposition 16-QAM modulation (16-QAM SM), is employed. For the given system, a new relay selection scheme with constellation rearrangement (CR) technique is proposed, which is based on the optimal total mutual information (MI) criterion. Firstly we find...
In this paper, we consider cooperative communication in a two-way relay network and propose a spectrally efficient adaptive partial repeated network coding scheme. This scheme avoids error propagation of network coding. In the scheme, the relay node is assumed to have perfect channel state information, and the mutual information (MI) model is used to adaptively optimize the amount of data that need...
In this paper, we propose two spectrally efficient adaptive partial decode-and-forward (DF) cooperative communication schemes, which are adaptive partial repetition DF with quantized feedback (APR-DF-QF) and adaptive partial coded cooperation DF with quantized feedback (APCC-DF-QF). We assume the relay node only has partial channel-state information, which is obtained via an quantized feedback link...
The boom in user amount and voice traffic puts a huge pressure on the operators especially within populous countries, which forces them to enhance the voice capacity in the GSM evolution. The concept of Multi-User Reusing-One-Slot (MUROS) is promising to resolve this problem with negligible impact on handsets as well as to networks. In this paper, we compared the link-level and system-level performance...
In this paper, we propose a novel mapping scheme in non-binary LDPC coded modulation system. Contrary to the mapping method in [1], we assign the variable node of less degree to the more significant bits(MSBs) of signal constellation, for the purpose of the balanced protection. Simulation results show that compare to the traditional mapping scheme, the proposed method gives 0.1 dB-0.5 dB performance...
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