Full metadata record
DC Field | Value | Language |
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dc.contributor.advisor | Choi, Ji Woong | - |
dc.contributor.author | Shin, Sang Sik | - |
dc.date.accessioned | 2017-05-10T08:49:55Z | - |
dc.date.available | 2016-05-18T00:00:00Z | - |
dc.date.issued | 2013 | - |
dc.identifier.uri | http://dgist.dcollection.net/jsp/common/DcLoOrgPer.jsp?sItemId=000002262484 | en_US |
dc.identifier.uri | http://hdl.handle.net/20.500.11750/1329 | - |
dc.description.abstract | Spatial multiplexing (SM) multi-input multi-output (MIMO) technology is con-sidered as core advanced communication technology to achieve more capacity. Although it guarantees more capacity, it gives huge burden on the receiver side to detect each stream which is transmitted from each transmit antenna. The main reason is inter-stream interference caused from streams of other antennas. In this thesis, to reduce inter-stream interference effects we propose dimension reduction soft demodulation (DRSD) with maximum a posteriori (MAP) for iterative detec-tion and decoding (IDD). The DRSD with MAP employs all ordering successive interference cancellation (AOSIC) with slicing MAP criterion for hard detection and also adding one more candidate for AOSIC to improve performance. DRSD can provide low complexity to separate hard streams and soft streams and slicing MAP criterion also provides similar performance to conventional IDD algorithms such as the soft-input soft-output single tree-search based on sphere decoding (SISO-STS-SD) which has better performance than others. Our proposed algorithm can reduce the complexity of iterative soft MIMO detection and give fixed complexity on the variety of SNR. Moreover, receiver performance of pro-posed scheme nearly approaches the performance of SISO-STS-SD. ⓒ 2013 DGIST | - |
dc.description.tableofcontents | Ⅰ. INTRODUCTION 1 -- 1.1 Overview of this study 1 -- 1.2 Notation 2 -- Ⅱ. MIMO SPATIAL MULTIPLEXING (SM) TECHNOLOGIES BACKGROUNDS 3 -- 2.1 System model 3 -- 2.2 SM detection and decoding 4 -- 2.3 Non-iterative detection and decoding 5 -- 2.3.1 Hard detection receivers 5 -- 2.3.2 Soft detection receivers 7 -- 2.4 Iterative detection and decoding (IDD) 8 -- Ⅲ. PROPOSED IDD SCHEMES 11 -- 3.1 Dimension reduction soft demodulation (DRSD) with MAP 11 -- 3.1.1 AOSIC with slicing MAP criterion 13 -- 3.1.2 Adding the one more candidate 16 -- Ⅳ. COMPLEXITY and PERFORMANCE EVALUATION 18 -- 4.1 Complexity evaluation 18 -- 4.2 Performance evaluation 21 -- Ⅴ. SUMMARY and FUTURE WORK 24 -- 5.1 Summary 24 -- 5.2 Future work 25 |
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dc.format.extent | 30 | - |
dc.language | eng | - |
dc.publisher | DGIST | - |
dc.subject | Dimension reduction soft demodulation. Iterative detection and decoding. All ordering successive interference cancellation | - |
dc.subject | Slicing MAP criterion | - |
dc.subject | 반복 검출 | - |
dc.subject | 모든순서순차삭제기법 | - |
dc.subject | 낮은차수검출기법 | - |
dc.subject | 최대사후확률 | - |
dc.subject | 최대우도 | - |
dc.title | Iterative MIMO Detection Based on Dimen-sion Reduction Soft Demodulation | - |
dc.title.alternative | 차원감소 소프트복조 기반의 다중 안테나 반복검출 기법 | - |
dc.type | Thesis | - |
dc.identifier.doi | 10.22677/thesis.2262484 | - |
dc.description.alternativeAbstract | 공간다중 다중안테나 검출기법은 높은 데이터 율을 얻기 위해서 꼭 필요한 기술이지만 실제 적용에 있어서 문제를 가지고 있다. 특히 공간다중 다중안테나 검출기법 중 반복검출복호기법의 경우 확실한 수신 성능의 개선이 있지만 수신 단에 많은 계산양의 부담을 주어서 실제 적용하기가 어렵다. 이에 본 논문은 이 문제를 해결하기 위해서 최대사후확률을 사용한 차원감소 소프트복조기법을 제안한다. 차원감소 소프트복조기법의 하드검출을 위해서 모든 순서순차간섭삭제기법을 슬라이싱 최대사후확률 기준을 가지고 개선하며 추가 성능 향상을 위해서 모든 순서순차간섭삭제기법에 하나의 스트림 리스트를 추가하는 기법을 제안한다. 하드 검출과 소프트 검출로 스트림을 분리하여 복잡도를 낮추었으며 특히 슬라이싱 최대사후확률 기준을 가지고 반복검출복호기법의 충분한 성능을 보인다. 제안한 기법은 반복검출복혹기법의 기존의 기법에 비해 낮은 계산량과 신호 및 잡음비에 무관한 고정 계산량을 제공하며 기존 기법의 성능에 근접한 성능을 보인다. ⓒ 2013 DGIST |
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dc.description.degree | Master | - |
dc.contributor.department | Information and Communication Engineering | - |
dc.contributor.coadvisor | Choi, Hong Soo | - |
dc.date.awarded | 2013. 2 | - |
dc.publisher.location | Daegu | - |
dc.description.database | dCollection | - |
dc.date.accepted | 2016-05-18 | - |
dc.contributor.alternativeDepartment | 대학원 정보통신융합공학전공 | - |
dc.contributor.affiliatedAuthor | Shin, Sang Sik | - |
dc.contributor.affiliatedAuthor | Choi, Ji Woong | - |
dc.contributor.affiliatedAuthor | Choi, Hong Soo | - |
dc.contributor.alternativeName | 신상식 | - |
dc.contributor.alternativeName | 최지웅 | - |
dc.contributor.alternativeName | 최홍수 | - |