Virtual Channel Optimization for Overloaded MIMO Systems

Yang, Guide; Zhou, Yuanping; Xia, Wenlong

doi:10.1109/tcsii.2017.2736069

Cited by 3 publications

(1 citation statement)

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“…When the phases of user's signals are taken into consideration, the performance can be improved. In this Letter, we propose a virtual channel optimisation (VCO) method based on our prior work in [5] to address the SCCs scenario. The idea is to construct a uniquely decodable sum constellation [6, II‐A] by optimising the phases of two users’ signals and maximising the minimum Euclidean distance (MED) among the superposed points.…”

Section: Introductionmentioning

confidence: 99%

Non‐orthogonal multiple access without channel state information for similar channel conditions

et al. 2019

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A downlink non-orthogonal multiple access with QPSK input constellations based on virtual channel optimisation is presented to address the similar channel conditions scenario. The novel idea is to construct a uniquely decodable sum constellation by maximising the minimum Euclidean distance among the points of the superposed constellation. An optimal angle difference is derived to make the proposed scheme easy to implement. With a fixed angle pair setup, a non-orthogonal multiple access system without the knowledge of channel state information is proposed. Simulation results are provided to demonstrate the performance of the proposed scheme.

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Section: Introductionmentioning

confidence: 99%