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On the performance of non-orthogonal multiple access in 5G systems with randomly deployed users

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<mark>Journal publication date</mark>1/12/2014
<mark>Journal</mark>IEEE Signal Processing Letters
Issue number12
Volume21
Number of pages5
Pages (from-to)1501-1505
Publication statusPublished
Original languageEnglish

Abstract

In this letter, the performance of non-orthogonal multiple access (NOMA) is investigated in a cellular downlink scenario with randomly deployed users. The developed analytical results show that NOMA can achieve superior performance in terms of ergodic sum rates; however, the outage performance of NOMA depends critically on the choices of the users' targeted data rates and allocated power. In particular, a wrong choice of the targeted data rates and allocated power can lead to a situation in which the user's outage probability is always one, i.e. the user's targeted quality of service will never be met.