{"id":2791,"date":"2021-10-30T12:13:20","date_gmt":"2021-10-30T03:13:20","guid":{"rendered":"http:\/\/pemsic.eee.nagasaki-u.ac.jp\/?p=2791"},"modified":"2021-12-14T17:29:27","modified_gmt":"2021-12-14T08:29:27","slug":"full-paper-dr-hariya-circuit-design-techniques-for-reducing-the-effects-of-magnetic-flux-on-gan-hemts-in-5-mhz-100-w-high-power-density-llc-resonant-dc-dc-converters-3","status":"publish","type":"post","link":"https:\/\/pemsic.eee.nagasaki-u.ac.jp\/?p=2791","title":{"rendered":"Full Paper: Dr. Wang Spectral and Energy Efficiency for Large-Scale Multiple-Input-Multiple-Output Two-Way Hybrid Relaying With Multi-Pair Users Under Imperfect Channel State Information@ IEEE Access"},"content":{"rendered":"

H. Wang, Y. Ishizuka, T. Fujimoto, T. Tanaka, Z. Li and S. Xing, “Spectral and Energy Efficiency for Large-Scale Multiple-Input-Multiple-Output Two-Way Hybrid Relaying With Multi-Pair Users Under Imperfect Channel State Information,” in IEEE Access, vol. 9, pp. 142837-142856, 2021, doi: 10.1109\/ACCESS.2021.3121148.<\/a><\/p>\n

Abstract:<\/p>\n

Herein, we investigate the system spectral efficiency (SSE) and system energy efficiency (SEE) for massive two-way multiple-input-multiple-output (MIMO) relaying networks while considering imperfect channel state information (CSI) with\u00a0K<\/span><\/span><\/span><\/span>\u00a0-pair users in the presence of the hybrid relaying processing. First, we obtain the general expression of the signal-to-interference-and-noise-ratio (SINR) for the considered system when the antenna number of the relay station (RS)\u00a0M<\/span><\/span><\/span><\/span>\u00a0tends to be significantly large. Next, we consider the power scaling scheme (PSS) and achieve asymptotic SSE and SEE. We set the pilot sequence transmit power\u00a0P<\/span>P<\/span><\/span><\/span><\/span><\/span><\/span><\/span>\u00a0to be fixed\u00a0P<\/span>P<\/span><\/span><\/span><\/span><\/span><\/span><\/span>\u00a0and variable\u00a0P<\/span>P<\/span><\/span><\/span><\/span><\/span><\/span><\/span> . For a non-vanishing SINR, we achieve different power scaling cases under fixed and variable\u00a0P<\/span>P<\/span><\/span><\/span><\/span><\/span><\/span><\/span>\u00a0. For a fixed\u00a0P<\/span>P<\/span><\/span><\/span><\/span><\/span><\/span><\/span>\u00a0value, the optimal PSS of the SSE can be obtained when the transmit power of each user can be scaled by\u00a0M<\/span><\/span><\/span><\/span>\u00a0, whereas that of the SEE can be achieved when the transmit power of both the RS and each user terminal can be reduced by\u00a0M<\/span><\/span><\/span><\/span>\u00a0. Based on the variable value of\u00a0P<\/span>P<\/span><\/span><\/span><\/span><\/span><\/span><\/span>\u00a0, the optimal PSS\u2019 of both the SSE and the SEE can be used when the transmit power of both RS and each user can be scaled by\u00a0M<\/span>1<\/span>\/<\/span><\/span><\/span>3<\/span><\/span><\/span><\/span><\/span><\/span><\/span>\u00a0. Thus, we conclude that the required SSE and SEE performances can be attained in multi-pair massive MIMO two-way relaying networks with a considerably low transmit power at RS and\/or the transmit power of each user. The analytical results for the same are validated via simulation.<\/p>\n","protected":false},"excerpt":{"rendered":"

H. Wang, Y. Ishizuka, T. Fujimoto, T. Ta… Continue Reading →<\/a><\/p>\n","protected":false},"author":1,"featured_media":2792,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[4],"tags":[88,89,33],"class_list":["post-2791","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-published","tag-mimo-massive","tag-relay","tag-yoichi-ishizuka"],"jetpack_featured_media_url":"https:\/\/i0.wp.com\/pemsic.eee.nagasaki-u.ac.jp\/wp-content\/uploads\/2021\/10\/112a0e6c3a58d719060fd8a52bbbcc98.png?fit=607%2C879&ssl=1","jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/p6WRmG-J1","jetpack-related-posts":[{"id":2603,"url":"https:\/\/pemsic.eee.nagasaki-u.ac.jp\/?p=2603","url_meta":{"origin":2791,"position":0},"title":"Paper: Wang “Spectral and Energy Efficiency for Massive MIMO Two-way Hybrid Relaying with Multi-Pair Users”@ IEICE Communications Express","author":"","date":"12\/16\/2020","format":false,"excerpt":"Spectral and Energy Efficiency for Massive MIMO Tw\u2026","rel":"","context":"Published","block_context":{"text":"Published","link":"https:\/\/pemsic.eee.nagasaki-u.ac.jp\/?cat=4"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":2766,"url":"https:\/\/pemsic.eee.nagasaki-u.ac.jp\/?p=2766","url_meta":{"origin":2791,"position":1},"title":"Ph. 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Thesis: Hongyan Wang, “The Spectral and Energy Efficiency Analyses for Hybrid Massive MIMO Two-way Relaying System with Multiple Communication Pairs,” Mar. 2021\u3000","author":"","date":"04\/01\/2021","format":false,"excerpt":"NAOSITE\uff08Repositry@Nagasaki University\uff09","rel":"","context":"Published","block_context":{"text":"Published","link":"https:\/\/pemsic.eee.nagasaki-u.ac.jp\/?cat=4"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/pemsic.eee.nagasaki-u.ac.jp\/wp-content\/uploads\/2021\/09\/2525eadad8145cfa91f6ff61813caec9.png?fit=739%2C622&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/pemsic.eee.nagasaki-u.ac.jp\/wp-content\/uploads\/2021\/09\/2525eadad8145cfa91f6ff61813caec9.png?fit=739%2C622&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/pemsic.eee.nagasaki-u.ac.jp\/wp-content\/uploads\/2021\/09\/2525eadad8145cfa91f6ff61813caec9.png?fit=739%2C622&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/pemsic.eee.nagasaki-u.ac.jp\/wp-content\/uploads\/2021\/09\/2525eadad8145cfa91f6ff61813caec9.png?fit=739%2C622&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":2633,"url":"https:\/\/pemsic.eee.nagasaki-u.ac.jp\/?p=2633","url_meta":{"origin":2791,"position":2},"title":"Event:\u3000Ms. Hongyan Wang, Ph. 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