Enhanced Groupwise Detection with a New Receive Combiner for Spatial Multiplexing MIMO Systems
- Authors
- Moon, Sung-Hyun; Jeong, Jeongsik; Lee, Heunchul; Lee, Inkyu
- Issue Date
- 9월-2010
- Publisher
- IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
- Keywords
- Multiple-input multiple-output (MIMO); group detection; spatial multiplexing; maximum-likelihood (ML) detection
- Citation
- IEEE TRANSACTIONS ON COMMUNICATIONS, v.58, no.9, pp.2511 - 2515
- Indexed
- SCIE
SCOPUS
- Journal Title
- IEEE TRANSACTIONS ON COMMUNICATIONS
- Volume
- 58
- Number
- 9
- Start Page
- 2511
- End Page
- 2515
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/115841
- DOI
- 10.1109/TCOMM.2010.09.090135
- ISSN
- 0090-6778
- Abstract
- In this letter, we propose a new groupwise receive combiner design for multiple-input multiple-output spatial multiplexing systems. The conventional group detection (GD) suffers from a considerable performance loss since the noise components are not taken into account. The output signal-to-interferenceplus- noise ratio (SINR) is defined in each subgroup in order to consider both the desired signal and noise statistics. Adopting the real-valued representation, we provide an optimal receive combiner which maximizes the SINR with a general group size. The simulation results show that the proposed scheme achieves a large performance gain over the conventional GD in coded systems. Also, when combining with near-optimal detection algorithms such as sphere decoder, the proposed GD scheme offers a comparable performance with significant reduced complexity.
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