SDR 시스템에서 GPU를 사용한 Lattice Reduction-aided 검출기 구현mplementation of Lattice Reduction-aided Detector using GPU on SDR System
- Other Titles
- mplementation of Lattice Reduction-aided Detector using GPU on SDR System
- Authors
- 김태현; 이현석; 최승원
- Issue Date
- Sep-2011
- Publisher
- (사)디지털산업정보학회
- Keywords
- Lattice Reduction; Graphics Processing Unit; MIMO Detector; Parallel Processing; SDR
- Citation
- (사)디지털산업정보학회 논문지, v.7, no.3, pp.55 - 61
- Indexed
- KCI
OTHER
- Journal Title
- (사)디지털산업정보학회 논문지
- Volume
- 7
- Number
- 3
- Start Page
- 55
- End Page
- 61
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/167612
- ISSN
- 1738-6667
- Abstract
- This paper presents an implementation of Lattice Reduction (LR)-aided detector for Multiple-Input Multiple-Output (MIMO) system using Graphics Processing Unit (GPU). GPU is a parallel processor which has a number of Arithmetic Logic Units (ALUs), thus, it can minimize the operation time of LR algorithm through the parallelization using multiple threads in the GPU. Through the implemented LR-aided detector, we verify that the LR-aided detector operates a lot faster than Maximum Likelihood (ML) detector. The implemented LR-aided detector has been applied to WiMAX system to show the feasibility of its real-time processing. In addition, we demonstrate that the processing time can be reduced at the cost of 3dB SNR loss by limiting the repeating loop in Lenstra-Lenstra-Lovasz (LLL)algorithm which is frequently used in LR-aided detector.
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