Y. Harbi, Ali Kadhim Al-Janabi, Hayder Almusa, Marwa Chafii, A. Burr
{"title":"Iterative Interference Cancellation for Multi-Carrier Modulation in MIMO-DWT Downlink Transmission","authors":"Y. Harbi, Ali Kadhim Al-Janabi, Hayder Almusa, Marwa Chafii, A. Burr","doi":"10.18080/jtde.v9n4.426","DOIUrl":null,"url":null,"abstract":"The Multiple-Input Multiple-Output Orthogonal Frequency Division Multiplexing (MIMO-OFDM) scheme represents the dominant radio interface for broadband multicarrier communication systems. However, with insufficient Cyclic Prefixes (CP), Inter-Symbol Interference (ISI) and Inter-Carrier Interference (ICI) occur due to the time-varying multipath channel. This means that the performance of the system will be degraded. In this paper, we investigate the interference problem for a MIMO Discrete Wavelet Transform (MIMO-DWT) system under the effect of the downlink LTE channel. A Low-Density Parity-Check (LDPC) decoder is used to estimate the decoded signal. The proposed iterative algorithm uses the estimated decoded signal to compute the components required for ICI/ISI interference reduction. In this paper, Iterative Interference Cancellation (IIC) is employed to mitigate the effects of interference that contaminates the received signal due to multiple antenna transmission and a multipath channel. An equalizer with minimum mean square error is considered. We compare the performance of our proposed algorithm with the traditional MIMO-OFDM scheme in terms of bit error probability under insufficient CP. Simulation results verify that significant improvements are achieved by using IIC and MIMO-IIC for both systems.","PeriodicalId":37752,"journal":{"name":"Australian Journal of Telecommunications and the Digital Economy","volume":"89 1","pages":""},"PeriodicalIF":0.0000,"publicationDate":"2021-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Australian Journal of Telecommunications and the Digital Economy","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.18080/jtde.v9n4.426","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"Social Sciences","Score":null,"Total":0}
引用次数: 0
Abstract
The Multiple-Input Multiple-Output Orthogonal Frequency Division Multiplexing (MIMO-OFDM) scheme represents the dominant radio interface for broadband multicarrier communication systems. However, with insufficient Cyclic Prefixes (CP), Inter-Symbol Interference (ISI) and Inter-Carrier Interference (ICI) occur due to the time-varying multipath channel. This means that the performance of the system will be degraded. In this paper, we investigate the interference problem for a MIMO Discrete Wavelet Transform (MIMO-DWT) system under the effect of the downlink LTE channel. A Low-Density Parity-Check (LDPC) decoder is used to estimate the decoded signal. The proposed iterative algorithm uses the estimated decoded signal to compute the components required for ICI/ISI interference reduction. In this paper, Iterative Interference Cancellation (IIC) is employed to mitigate the effects of interference that contaminates the received signal due to multiple antenna transmission and a multipath channel. An equalizer with minimum mean square error is considered. We compare the performance of our proposed algorithm with the traditional MIMO-OFDM scheme in terms of bit error probability under insufficient CP. Simulation results verify that significant improvements are achieved by using IIC and MIMO-IIC for both systems.
期刊介绍：
The Journal of Telecommunications and the Digital Economy (JTDE) is an international, open-access, high quality, peer reviewed journal, indexed by Scopus and Google Scholar, covering innovative research and practice in Telecommunications, Digital Economy and Applications. The mission of JTDE is to further through publication the objective of advancing learning, knowledge and research worldwide. The JTDE publishes peer reviewed papers that may take the following form: *Research Paper - a paper making an original contribution to engineering knowledge. *Special Interest Paper – a report on significant aspects of a major or notable project. *Review Paper for specialists – an overview of a relevant area intended for specialists in the field covered. *Review Paper for non-specialists – an overview of a relevant area suitable for a reader with an electrical/electronics background. *Public Policy Discussion - a paper that identifies or discusses public policy and includes investigation of legislation, regulation and what is happening around the world including best practice *Tutorial Paper – a paper that explains an important subject or clarifies the approach to an area of design or investigation. *Technical Note – a technical note or letter to the Editors that is not sufficiently developed or extensive in scope to constitute a full paper. *Industry Case Study - a paper that provides details of industry practices utilising a case study to provide an understanding of what is occurring and how the outcomes have been achieved. *Discussion – a contribution to discuss a published paper to which the original author''s response will be sought. Historical - a paper covering a historical topic related to telecommunications or the digital economy.
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