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Non-orthogonal multiple access (NOMA) is a candidate technology for the 5th generation cellular networks to reduce the big gap between network capacity and fast growing traffic. It applies superposition coding in transmitters and successive interference cancellation at the receivers to cancel intra-cell interference. The same frequency resource can be allocated simultaneously to multiple intra-cell...
A new beamforming approach to combat the arbitrary unknown heavy-tailed impulsive noises including all alpha-stable noises with infinite variance or infinite mean is presented. The new approach, termed as linearly constrained minimum-'normalized variance' beamformer (LCMNV), is formulated as one to minimise the normalised variance of the beamformer's output, subject to a pre-specified set of linear...
We propose a novel linear transmit beamforming technique for multi-user MIMO broadcast channels (BC). We lower bound the product of all users' received SINRs when MMSE receivers are employed by all users. The proposed closed-form solution for transmit beamforming maximizes the lower bound of the product SINRs in an autonomic way. Unlike the zero-forcing beamforming (ZFBF), which can completely cancel...
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