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We propose a simple MSD scheme based on two implementation-friendly but powerful strategies. First, we find the best and second-best decisions in each symbol position with the standard SBSD procedure, and the global best decision is frozen. Second, for the remaining symbol positions, only the best and second-best symbol decisions, not all the candidates, are jointly searched by the standard MSD procedure. The simulation results indicate that the packet error rate (PER) performance of the simplified MSD scheme is almost the same as that of the full scheme. In particular, at PER of <jats:inline-formula>\n                     <a:math xmlns:a=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" id=\"M1\">\n                        <a:mn>1<\/a:mn>\n                        <a:mo>\u00d7<\/a:mo>\n                        <a:msup>\n                           <a:mrow>\n                              <a:mn>10<\/a:mn>\n                           <\/a:mrow>\n                           <a:mrow>\n                              <a:mo>\u2212<\/a:mo>\n                              <a:mn>3<\/a:mn>\n                           <\/a:mrow>\n                        <\/a:msup>\n                     <\/a:math>\n                  <\/jats:inline-formula>, no more than 0.2\u2009dB performance gap is observed if we just increase the observation window length <jats:inline-formula>\n                     <c:math xmlns:c=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" id=\"M2\">\n                        <c:mi>N<\/c:mi>\n                     <\/c:math>\n                  <\/jats:inline-formula> to 2. However, the number of decision metrics needed to be calculated is reduced from 256 to 2. Thus, much balance gain between implementation complexity and detection performance is achieved.<\/jats:p>","DOI":"10.1155\/2021\/6641192","type":"journal-article","created":{"date-parts":[[2021,5,20]],"date-time":"2021-05-20T20:20:05Z","timestamp":1621542005000},"page":"1-19","source":"Crossref","is-referenced-by-count":0,"title":["Multiple-Symbol Detection Scheme for IEEE 802.15.4c MPSK Receivers over Slow Rayleigh Fading Channels"],"prefix":"10.1155","volume":"2021","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-3374-4092","authenticated-orcid":true,"given":"Gaoyuan","family":"Zhang","sequence":"first","affiliation":[{"name":"School of Information Engineering, Henan University of Science and Technology, Luoyang 471023, China"},{"name":"Key Laboratory of Middle Atmosphere and Global Environment Observation, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China"},{"name":"School of Aeronautics and Astronautics, University of Electronic Science and Technology of China, Chengdu 610054, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7022-0226","authenticated-orcid":true,"given":"Haiqiong","family":"Li","sequence":"additional","affiliation":[{"name":"School of Information Engineering, Henan University of Science and Technology, Luoyang 471023, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9256-5452","authenticated-orcid":true,"given":"Congzheng","family":"Han","sequence":"additional","affiliation":[{"name":"Key Laboratory of Middle Atmosphere and Global Environment Observation, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5267-7123","authenticated-orcid":true,"given":"Congyu","family":"Shi","sequence":"additional","affiliation":[{"name":"School of Information Engineering, Henan University of Science and Technology, Luoyang 471023, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Hong","family":"Wen","sequence":"additional","affiliation":[{"name":"School of Aeronautics and Astronautics, University of Electronic Science and Technology of China, Chengdu 610054, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Dan","family":"Wang","sequence":"additional","affiliation":[{"name":"School of Information Engineering, Henan University of Science and Technology, Luoyang 471023, China"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","reference":[{"key":"1","doi-asserted-by":"publisher","DOI":"10.3390\/electronics9081246"},{"key":"2","doi-asserted-by":"publisher","DOI":"10.1016\/j.comnet.2018.08.001"},{"key":"3","doi-asserted-by":"publisher","DOI":"10.1049\/iet-com.2016.0880"},{"issue":"10","key":"4","doi-asserted-by":"crossref","first-page":"12286","DOI":"10.1109\/TVT.2020.3006478","article-title":"Secrecy analysis of ambient backscatter NOMA systems under I\/Q imbalance","volume":"69","author":"X. 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