Matches in SemOpenAlex for { <https://semopenalex.org/work/W3048906295> ?p ?o ?g. }
- W3048906295 abstract "Low earth orbit (LEO) satellite communication systems have attracted extensive attention due to their smaller pathloss, shorter round-trip delay and lower launch cost compared with geostationary counterparts. In this paper, the downlink transmit design for massive multiple-input multiple-output (MIMO) LEO satellite communications is investigated. First, we establish the massive MIMO LEO satellite channel model where the satellite and user terminals (UTs) are both equipped with the uniform planar arrays. Then, the rank of transmit covariance matrix of each UT is shown to be no larger than one to maximize ergodic sum rate, which reveals the optimality of single-stream precoding for each UT. The minorization-maximization algorithm is used to compute the precoding vectors. To reduce the computation complexity, an upper bound of ergodic sum rate is resorted to produce a simplified transmit design, where the rank of optimal transmit covariance matrix of each UT is also shown to not exceed one. To tackle the simplified precoder design, we derive the structure of precoding vectors, and formulate a Lagrange multiplier optimization (LMO) problem building on the structure. Then, a low-complexity algorithm is devised to solve the LMO, which takes much less computation effort. Simulation results verify the performance of proposed approaches." @default.
- W3048906295 created "2020-08-18" @default.
- W3048906295 creator A5008017308 @default.
- W3048906295 creator A5016154330 @default.
- W3048906295 creator A5050692023 @default.
- W3048906295 creator A5067317046 @default.
- W3048906295 creator A5074241486 @default.
- W3048906295 creator A5085579919 @default.
- W3048906295 creator A5085856839 @default.
- W3048906295 date "2020-08-12" @default.
- W3048906295 modified "2023-09-28" @default.
- W3048906295 title "Downlink Transmit Design in Massive MIMO LEO Satellite Communications" @default.
- W3048906295 cites W1532381648 @default.
- W3048906295 cites W1641639920 @default.
- W3048906295 cites W1971443733 @default.
- W3048906295 cites W1982334204 @default.
- W3048906295 cites W1987123761 @default.
- W3048906295 cites W2001715686 @default.
- W3048906295 cites W2007439533 @default.
- W3048906295 cites W2015301486 @default.
- W3048906295 cites W2015990050 @default.
- W3048906295 cites W2019473268 @default.
- W3048906295 cites W2072599023 @default.
- W3048906295 cites W2098814788 @default.
- W3048906295 cites W2101727634 @default.
- W3048906295 cites W2109005286 @default.
- W3048906295 cites W2116331145 @default.
- W3048906295 cites W2120706128 @default.
- W3048906295 cites W2126051936 @default.
- W3048906295 cites W2132305759 @default.
- W3048906295 cites W2136009194 @default.
- W3048906295 cites W2137908630 @default.
- W3048906295 cites W2147601077 @default.
- W3048906295 cites W2148089951 @default.
- W3048906295 cites W2149414429 @default.
- W3048906295 cites W2151764714 @default.
- W3048906295 cites W2165611048 @default.
- W3048906295 cites W2224433383 @default.
- W3048906295 cites W2296319761 @default.
- W3048906295 cites W2340567003 @default.
- W3048906295 cites W2481840391 @default.
- W3048906295 cites W2734591528 @default.
- W3048906295 cites W2743363440 @default.
- W3048906295 cites W2803887634 @default.
- W3048906295 cites W2807554399 @default.
- W3048906295 cites W2885378192 @default.
- W3048906295 cites W2914622890 @default.
- W3048906295 cites W2919225749 @default.
- W3048906295 cites W2921679472 @default.
- W3048906295 cites W2940954889 @default.
- W3048906295 cites W2941952695 @default.
- W3048906295 cites W2962882009 @default.
- W3048906295 cites W2963178977 @default.
- W3048906295 cites W2964162802 @default.
- W3048906295 cites W2980895032 @default.
- W3048906295 cites W2988558204 @default.
- W3048906295 cites W3102364573 @default.
- W3048906295 cites W3104650338 @default.
- W3048906295 cites W1970830346 @default.
- W3048906295 hasPublicationYear "2020" @default.
- W3048906295 type Work @default.
- W3048906295 sameAs 3048906295 @default.
- W3048906295 citedByCount "1" @default.
- W3048906295 countsByYear W30489062952021 @default.
- W3048906295 crossrefType "posted-content" @default.
- W3048906295 hasAuthorship W3048906295A5008017308 @default.
- W3048906295 hasAuthorship W3048906295A5016154330 @default.
- W3048906295 hasAuthorship W3048906295A5050692023 @default.
- W3048906295 hasAuthorship W3048906295A5067317046 @default.
- W3048906295 hasAuthorship W3048906295A5074241486 @default.
- W3048906295 hasAuthorship W3048906295A5085579919 @default.
- W3048906295 hasAuthorship W3048906295A5085856839 @default.
- W3048906295 hasConcept C11413529 @default.
- W3048906295 hasConcept C126255220 @default.
- W3048906295 hasConcept C127162648 @default.
- W3048906295 hasConcept C127413603 @default.
- W3048906295 hasConcept C138660444 @default.
- W3048906295 hasConcept C146978453 @default.
- W3048906295 hasConcept C155437304 @default.
- W3048906295 hasConcept C160562895 @default.
- W3048906295 hasConcept C16405173 @default.
- W3048906295 hasConcept C19269812 @default.
- W3048906295 hasConcept C207987634 @default.
- W3048906295 hasConcept C2776330181 @default.
- W3048906295 hasConcept C33923547 @default.
- W3048906295 hasConcept C41008148 @default.
- W3048906295 hasConcept C73684929 @default.
- W3048906295 hasConcept C76155785 @default.
- W3048906295 hasConceptScore W3048906295C11413529 @default.
- W3048906295 hasConceptScore W3048906295C126255220 @default.
- W3048906295 hasConceptScore W3048906295C127162648 @default.
- W3048906295 hasConceptScore W3048906295C127413603 @default.
- W3048906295 hasConceptScore W3048906295C138660444 @default.
- W3048906295 hasConceptScore W3048906295C146978453 @default.
- W3048906295 hasConceptScore W3048906295C155437304 @default.
- W3048906295 hasConceptScore W3048906295C160562895 @default.
- W3048906295 hasConceptScore W3048906295C16405173 @default.
- W3048906295 hasConceptScore W3048906295C19269812 @default.
- W3048906295 hasConceptScore W3048906295C207987634 @default.
- W3048906295 hasConceptScore W3048906295C2776330181 @default.