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This paper presents a collaborative beamforming design under imperfect channel state information (CSI) assumption for a multiple single-antenna two-way relay network with reciprocal channels. In practical scenario, the channel estimation is always inaccurate at relay nodes. Aiming to tackle the performance degradation caused by the imperfect CSI, we propose a robust beamforming scheme with hypothesis...
In this paper, we derive a closed-form expression for the probability density/mass function (PDF/PMF) and the moment generating function (MGF) of the quantized detector soft output, i.e., extrinsic log-likelihood ratio (LLR), for multiple-input multiple-output (MIMO) bit-interleaved coded modulation with iterative decoding (BICM-ID) systems. The effect of either LLR clipping or LLR clipping with rounding,...
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