One-Bit Successive-Cancellation Soft-Output (OSS) Detector for Uplink MU-MIMO Systems with One-Bit ADCs
- Title
- One-Bit Successive-Cancellation Soft-Output (OSS) Detector for Uplink MU-MIMO Systems with One-Bit ADCs
- Author
- 홍송남
- Keywords
- Massive MIMO; multiuser MIMO detection; one-bit analog-to-digital converter (ADC); soft-output decoding
- Issue Date
- 2019-02
- Publisher
- IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
- Citation
- IEEE ACCESS, v. 7, page. 27172-27182
- Abstract
- We study an uplink multiuser multiple-input multiple-output (MU-MIMO) system with one-bit analog-to-digital converters (ADCs) in which one base station (BS) with N-r receive antennas serve K users with a single antenna. For this system, the soft-output (SO) detector was recently proposed where a soft-metric (e.g., a log-likelihood ratio (LLR)) is computed from a hard-decision channel output by introducing a novel distance measure in the binary Hamming space. This makes it possible to be naturally incorporated into the state-of-the-art channel codes (e.g., low-density parity-check code or polar code). In this paper, we further improve the performance of the SO detector by exploiting a priori information (e.g., the previously decoded messages), which is called the one-bit successive-cancellation soft-output (OSS) detector. The key idea of the proposed OSS detector is that each user k's message is decoded sequentially via the associated channel decoder k in ascending order and a refined search-space is constructed using the previously decoded messages (i.e., the enhanced LLRs are generated). We then present a multiple OSS detector by taking into account a more practical scenario where the BS is equipped with multiple channel decoders. In addition, we propose an efficient way to determine a good decoding order by introducing a novel set-distance measure. Finally, simulation results demonstrate that the proposed OSS detector can significantly improve the existing SO detector for the coded MU-MIMO systems with one-bit ADCs.
- URI
- https://ieeexplore.ieee.org/document/8653824https://repository.hanyang.ac.kr/handle/20.500.11754/160522
- ISSN
- 2169-3536
- DOI
- 10.1109/ACCESS.2019.2901942
- Appears in Collections:
- COLLEGE OF ENGINEERING[S](공과대학) > ELECTRONIC ENGINEERING(융합전자공학부) > Articles
- Files in This Item:
- One-Bit Successive-Cancellation Soft-Output (OSS) Detector for Uplink MU-MIMO Systems With One-Bit Adcs.pdfDownload
- Export
- RIS (EndNote)
- XLS (Excel)
- XML