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In this paper, we propose an expectation propagation based iterative multi-user detection algorithm for multiple input multiple output interleave-division multiple access (MIMO-IDMA) systems with high-order modulation. The proposed detector can be well integrated into the traditional structure of turbo receivers for MIMO-IDMA systems. By formulating a scalar factor graph representation of the multi-user...
Based on the analysis of the fundamental constraints on deep space communication data rates, this paper shows that the performance of post-carrier synchronization combining could be enhanced by Data-Aided (DA) synchronization. Through simulation, we get the optimal parameters for the DA synchronization algorithms and the performance enhancing zone of the proposed arraying scheme comparing with the...
In this paper, a 4-transmit-antenna space time block coding (STBC) scheme with 1-bit differential feedback is proposed. This scheme gives full transmit diversity and spatial coding rate over time-selective fading channels by rotating the signal constellations for certain angles determined by the differential feedback information. By utilizing differential feedback, our method can provide much better...
A low-complexity, near-optimal transmit antenna selection algorithm is proposed for multi-relay networks where all nodes are equipped with multiple antennas. We first establish a system model and a unified capacity maximization framework for a two-hop opportunistic relaying scheme where the source node (S) transmits signals to multiple relay nodes (R) in the first time slot, and the selected relay...
As for deep space exploration, the fundamental problem is the enormous path loss due to the vast distance. International Telecommunication Union (ITU) has allocated Xband and Ka-band for deep space exploration. However, it can be confirmed that, these frequency bands are not always the most efficient bands for the deep space exploration, especially in the deep space communications with the increasing...
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