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In this article, we investigate the capacity of large-scale multiple-input multiple-output (MIMO) multiple access channels (MACs) with linear receivers in ultra dense networks (UDNs) where the number of antennas at the base station and the number of total interfering terminals approach to infinity while maintaining a fixed ratio. To study the multicell uplink capacity of a large-scale MIMO system,...
This paper presents a novel low-complexity multiple-input multiple-output (MIMO) detection scheme using a distributed M-algorithm (DM) to achieve high performance soft MIMO detection. To reduce the searching complexity, we build a MIMO trellis graph and split the searching operations among different nodes, where each node will apply the M-algorithm. Instead of keeping a global candidate list as the...
The Third Generation Partnership Project (3GPP) Long Term Evolution (LTE) standard is becoming the appropriate choice to pave the way for the next generation wireless and cellular standards. While the popular OFDM technique has been adopted and implemented in previous standards and also in the LTE downlink, it suffers from high peak-to-average-power ratio (PAPR). High PAPR requires more sophisticated...
In this paper, a recursive forward-backward (F-B) trellis algorithm is proposed for soft-output MIMO detection. Instead of using the traditional tree topology, we represent the search space of the MIMO signals with a fully connected trellis and a forward-backward recursion is applied to compute the a posteriori probability (APP) for each coded data bit. The proposed detector has the following advantages:...
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