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In this paper, we investigate low complexity channel state selection algorithms in single input multiple output media-based modulation (SIMO-MBM) based on maximizing the minimum Euclidean distance of constellation. We propose two channel state selection algorithms called CS-MBM and CS-MSBM for SIMO-MBM with only MBM information transmitted and with both MBM and source-based modulation (SBM) information...
This paper considers channel estimation and achievable rates for the uplink of a massive multiple-input multiple-output (MIMO) system where the base station is equipped with one-bit analog-to-digital converters (ADCs). By rewriting the nonlinear one-bit quantization using a linear expression, we first derive a simple and insightful expression for the linear minimum mean-square-error (LMMSE) channel...
A new approach based on conventional propagation graph channel modeling was proposed to haracterize the wireless channel in non-light of sight (NLOS) tunnel scenarios. The scattering points are regarded as several points sets, which are different from the propagation-graph theory, then the transfer probability among sets is introduced to adjust the channel impulse response (CIR) taps. The advantage...
Channel measurements are the prerequisite condition for the design of the next-generation high-speed railway (HSR) communication system. Because of the measurement restriction and measurement efficiency issues of applying conventional channel sounders in HSR scenarios, railway-network-based channel measurements are becoming quite attractive. In this paper, a method that employs the cell-specific reference...
Massive multiple input and multiple output (MIMO) systems can increase the spectrum and energy efficiency of existing cells, and because of this, massive MIMO has been considered as a potential technique for next generation wireless communication networks. Since a thorough knowledge of the propagation channel is a prerequisite of reliable communication systems, massive MIMO channels are of great current...
Heterogeneous network (HetNet) which contains different transmission power NodeBs has been researched extensively earlier in LTE system. Owing to the great improvement achieved by HetNet, HSPA HetNet is currently being standardized by 3GPP working group. In co-channel HSPA HetNet (CHH), Uplink-Downlink (UL-DL) imbalance caused by the hugely different power from different types of transmission nodes...
In this paper, adaptive power saving methods considering multi-user diversity and channel dependent scheduling characteristics are proposed for Long-Term Evolution (LTE) and beyond system. In LTE, Discontinuous Reception (DRX) is applied in User Equipment (UE) to conserve mobile terminal's battery power. According to our observation, system load and channel variation have great impact to the power...
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