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Massive MIMO and NOMA bits-per-antenna efficiency under power allocation policies
A comparative resource allocation analysis in terms of received bits-per-antenna spectral efficiency (SE) and energy efficiency (EE) in downlink (DL) single-cell massive multiple-input multiple-output (mMIMO) and non-orthogonal multiple access (NOMA) systems considering a BS equipped with many (M) a...
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Published in: | Physical communication 2022-04, Vol.51, p.101588, Article 101588 |
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description | A comparative resource allocation analysis in terms of received bits-per-antenna spectral efficiency (SE) and energy efficiency (EE) in downlink (DL) single-cell massive multiple-input multiple-output (mMIMO) and non-orthogonal multiple access (NOMA) systems considering a BS equipped with many (M) antennas, while K devices operate with a single-antenna, and the loading of devices ρ=KM ranging in 0 |
doi_str_mv | 10.1016/j.phycom.2021.101588 |
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Bruza ; Abrão, Taufik</creator><creatorcontrib>Alves, Thiago A. Bruza ; Abrão, Taufik</creatorcontrib><description>A comparative resource allocation analysis in terms of received bits-per-antenna spectral efficiency (SE) and energy efficiency (EE) in downlink (DL) single-cell massive multiple-input multiple-output (mMIMO) and non-orthogonal multiple access (NOMA) systems considering a BS equipped with many (M) antennas, while K devices operate with a single-antenna, and the loading of devices ρ=KM ranging in 0<ρ≤2 is carried out under three different (PA) strategies: the inverse of the channel power allocation (PICPA), a modified water-filling (Δ-WF) allocation method, and the equal power allocation (EPA) reference method. Since in the NOMA system, the two devices per cluster are overlapped in the power-domain, the channel matrix requires transformation to perform the zero-forcing (ZF) precoding as adopted in mMIMO. Hence, NOMA operating under many antennas can favor a group of devices with higher array gain, overcoming the mMIMO and operating conveniently in the higher loading range 0.6<ρ<2.0. In such scenario, a more realistic and useful metric consists in evaluating the area under SE and EE curves, by measuring the bit-per-antenna and bit-per-antenna-per-watt efficiency, respectively. 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Bruza</creatorcontrib><creatorcontrib>Abrão, Taufik</creatorcontrib><title>Massive MIMO and NOMA bits-per-antenna efficiency under power allocation policies</title><title>Physical communication</title><description>A comparative resource allocation analysis in terms of received bits-per-antenna spectral efficiency (SE) and energy efficiency (EE) in downlink (DL) single-cell massive multiple-input multiple-output (mMIMO) and non-orthogonal multiple access (NOMA) systems considering a BS equipped with many (M) antennas, while K devices operate with a single-antenna, and the loading of devices ρ=KM ranging in 0<ρ≤2 is carried out under three different (PA) strategies: the inverse of the channel power allocation (PICPA), a modified water-filling (Δ-WF) allocation method, and the equal power allocation (EPA) reference method. Since in the NOMA system, the two devices per cluster are overlapped in the power-domain, the channel matrix requires transformation to perform the zero-forcing (ZF) precoding as adopted in mMIMO. Hence, NOMA operating under many antennas can favor a group of devices with higher array gain, overcoming the mMIMO and operating conveniently in the higher loading range 0.6<ρ<2.0. In such scenario, a more realistic and useful metric consists in evaluating the area under SE and EE curves, by measuring the bit-per-antenna and bit-per-antenna-per-watt efficiency, respectively. Our numerical results confirm a superiority of NOMA w.r.t. mMIMO of an order of 3x for the SE-area and 2x for the EE-area metric.</description><subject>Energy efficiency (EE)</subject><subject>Massive multiple-input multiple-output (mMIMO)</subject><subject>Non-orthogonal multiple access (NOMA)</subject><subject>Spectral efficiency (SE)</subject><issn>1874-4907</issn><issn>1876-3219</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2022</creationdate><recordtype>article</recordtype><recordid>eNp9kM9qwzAMxs3YYKXrG-yQF3BnO44dXwal7E-hWRlsZ-M6MnNJnWBnHX37Jc3O00ESH9KH9EPonpIlJVQ8HJbd19m2xyUjjI5SUZZXaEZLKXDOqLq-9BxzReQtWqR0IGNIwjifoffKpORPkFWbapeZUGdvu2qV7X2fcAcRm9BDCCYD57z1EOw5-w41xKxrf4Zsmqa1pvdtGIRmnEh36MaZJsHir87R5_PTx_oVb3cvm_Vqi21ORI9VYaTihZV7kE7Q2hmimCOKEqdKsNTWIle5AigEWDC8KKTcC8Zo4UrCSpHPEZ98bWxTiuB0F_3RxLOmRI9k9EFPZPRIRk9khrXHaQ2G204eok6Xv6D2EWyv69b_b_ALmcFt5Q</recordid><startdate>202204</startdate><enddate>202204</enddate><creator>Alves, Thiago A. 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Bruza</creatorcontrib><creatorcontrib>Abrão, Taufik</creatorcontrib><collection>CrossRef</collection><jtitle>Physical communication</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Alves, Thiago A. Bruza</au><au>Abrão, Taufik</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Massive MIMO and NOMA bits-per-antenna efficiency under power allocation policies</atitle><jtitle>Physical communication</jtitle><date>2022-04</date><risdate>2022</risdate><volume>51</volume><spage>101588</spage><pages>101588-</pages><artnum>101588</artnum><issn>1874-4907</issn><eissn>1876-3219</eissn><abstract>A comparative resource allocation analysis in terms of received bits-per-antenna spectral efficiency (SE) and energy efficiency (EE) in downlink (DL) single-cell massive multiple-input multiple-output (mMIMO) and non-orthogonal multiple access (NOMA) systems considering a BS equipped with many (M) antennas, while K devices operate with a single-antenna, and the loading of devices ρ=KM ranging in 0<ρ≤2 is carried out under three different (PA) strategies: the inverse of the channel power allocation (PICPA), a modified water-filling (Δ-WF) allocation method, and the equal power allocation (EPA) reference method. Since in the NOMA system, the two devices per cluster are overlapped in the power-domain, the channel matrix requires transformation to perform the zero-forcing (ZF) precoding as adopted in mMIMO. Hence, NOMA operating under many antennas can favor a group of devices with higher array gain, overcoming the mMIMO and operating conveniently in the higher loading range 0.6<ρ<2.0. In such scenario, a more realistic and useful metric consists in evaluating the area under SE and EE curves, by measuring the bit-per-antenna and bit-per-antenna-per-watt efficiency, respectively. Our numerical results confirm a superiority of NOMA w.r.t. mMIMO of an order of 3x for the SE-area and 2x for the EE-area metric.</abstract><pub>Elsevier B.V</pub><doi>10.1016/j.phycom.2021.101588</doi><orcidid>https://orcid.org/0000-0002-1873-1026</orcidid><orcidid>https://orcid.org/0000-0001-8678-2805</orcidid></addata></record> |
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subjects | Energy efficiency (EE) Massive multiple-input multiple-output (mMIMO) Non-orthogonal multiple access (NOMA) Spectral efficiency (SE) |
title | Massive MIMO and NOMA bits-per-antenna efficiency under power allocation policies |
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