The Journal of the Korea institute of electronic communication sciences (한국전자통신학회논문지)

Korea Institute of Electronic Communication Science (한국전자통신학회)
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Analyses on Achievable Data Rate for Single-User Decoding(SUD) Receiver: with Application to CIS NOMA Strong Channel User

SUD 수신기의 획득가능한 전송률 분석: 상관 정보원 비직교 다중 접속의 강 채널 사용자에 대한 응용

  • 정규혁 (단국대학교 소프트웨어학과)
  • Received : 2020.10.06
  • Accepted : 2020.12.15
  • Published : 2020.12.31
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Abstract

This paper investigates the achievable data rate for the single-user decoding(SUD) receiver, which does not perform successive interference cancellation(SIC), in contrast to the conventional SIC non-orthogonal multiple access(NOMA) scheme. First, the closed-form expression for the achievable data rate of SUD NOMA with correlated information sources(CIS) is derived, for the stronger channel user. Then it is shown that for the stronger channel user, the achievable data rate of SUD NOMA with independent information sources(IIS) is generally inferior to that of conventional SIC NOMA with IIS. However, for especially highly CIS, we show that the achievable data rate of SUD NOMA is greatly superior to that of conventional SIC NOMA. In addition, to verify the impact of CIS on the achievable data rate of SUD, the extensive comparisons of the achievable data rates for the SUD receiver and the SIC receiver are compared for various correlation coefficients.

본 논문은 표준 SIC NOMA와는 대조적으로, SIC를 수행하지 않는 SUD 수신기의 최대 전송률을 고찰한다. 먼저, 강 채널 사용자에 대해 상관 정보원의 SUD NOMA에 대한 최대 전송률의 폐쇄형 표현식을 유도한다. 다음, 강 채널 사용자에 대해서는, 독립 정보원의 SIC NOMA의 최대 전송률과 비교하여, 상관 정보원의 SUD NOMA의 최대 전송률은 일반적으로 감소하는 것을 보여준다. 그러나, 아주 강한 상관 정보원에 대해서는, 독립 정보원의 SIC NOMA의 최대 전송률과 비교하여, 상관 정보원의 SUD NOMA의 최대 전송률은 아주 우수하다는 것을 입증한다. 추가로, 상관 정보원이 SUD 수신기의 최대 전송률에 미치는 영향을 고찰하기 위해, 다양한 상관 관계 계수에 대해, SUD NOMA의 최대 전송률과 SIC NOMA의 최대 전송률을 폭넓게 비교한다.

Keywords

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