Exact Bit Error-Rate Analysis of Two-User NOMA Using QAM with Arbitrary Modulation Orders
Arafat Al‐Dweik, Tasneem Assaf, Mohamed Shawky El Moursi, Hatem Zein El din, Mohammad Al‐Jarrah
Abstract
This work considers the exact bit error rate (BER) analysis of a two-user non-orthogonal multiple access (NOMA) system using quadrature amplitude modulation (QAM). Unlike existing work, no constraints on the modulation order of the QAM symbols for any user. Closed-form expressions are derived for the BER of joint multiuser detector (JMuD), which is demonstrated that it is equivalent to the successive interference cancellation (SIC) receiver. Moreover, a general expression is derived for the relation between the power allocation factors for the two users, which depends on the modulation order for each user.
Topics & Concepts
Quadrature amplitude modulationQAMBit error rateSingle antenna interference cancellationNomaModulation (music)Computer scienceDetectorInterference (communication)AlgorithmPulse-amplitude modulationPower (physics)Electronic engineeringMathematicsTelecommunicationsPhysicsTelecommunications linkEngineeringDecoding methodsAcousticsPulse (music)Channel (broadcasting)Quantum mechanicsAdvanced Wireless Communication TechnologiesOptical Wireless Communication TechnologiesAdvanced Wireless Communication Techniques