Outage probability analysis for the multi-carrier NOMA downlink relying on statistical CSI
journal contributionposted on 18.03.2020 by Shenhong Li, Mahsa Derakhshani, Sangarapillai Lambotharan, Lajos Hanzo
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In this treatise, we derive tractable closed-form expressions for the outage probability of the single cell multi-carrier non-orthogonal multiple access (MC-NOMA) downlink, where the transmitter side only has statistical CSI knowledge. In particular, we analyze the outage probability with respect to the total data rates (summed over all subcarriers), given a minimum target rate for the individual users. The calculation of outage probability for the distant user is challenging, since the total rate expression is given by the sum of logarithmic functions of the ratio between two shifted exponential random variables, which are dependent. In order to derive the closed-form outage probability expressions both for two subcarriers and for a general case of multiple subcarriers, efficient approximations are proposed. The probability density function (PDF) of the product of shifted exponential distributions can be determined for the near user by the Mellin transform and the generalized upper incomplete Fox’s H function. Based on this PDF, the corresponding outage probability is presented. Finally, the accuracy of our outage analysis is verified by simulation results.
Communications Signal Processing Based Solutions for Massive Machine-to-Machine Networks (M3NETs) : EP/R006385/1
Engineering and Physical Sciences Research Council under Grant EP/R006385/1, EP/Noo4558/1, EP/PO34284/1, COALESCE, of the Royal Society’s Global Challenges Research Fund Grant as well as of the European Research Council’s Advanced Fellow Grant QuantCom.
- Mechanical, Electrical and Manufacturing Engineering