机构:
Univ Inst Lisbon, ISCTE, P-1649026 Lisbon, Portugal
Inst Telecomunicacoes, P-1049001 Lisbon, PortugalUniv Inst Lisbon, ISCTE, P-1649026 Lisbon, Portugal
Souto, Nuno M. B.
[1
,3
]
Dinis, Rui
论文数: 0引用数: 0
h-index: 0
机构:
UNL, FCT, P-2829516 Caparica, Portugal
Inst Telecomunicacoes, P-1049001 Lisbon, PortugalUniv Inst Lisbon, ISCTE, P-1649026 Lisbon, Portugal
Dinis, Rui
[2
,3
]
Cercas, Francisco
论文数: 0引用数: 0
h-index: 0
机构:
Univ Inst Lisbon, ISCTE, P-1649026 Lisbon, Portugal
Inst Telecomunicacoes, P-1049001 Lisbon, PortugalUniv Inst Lisbon, ISCTE, P-1649026 Lisbon, Portugal
Cercas, Francisco
[1
,3
]
机构:
[1] Univ Inst Lisbon, ISCTE, P-1649026 Lisbon, Portugal
[2] UNL, FCT, P-2829516 Caparica, Portugal
[3] Inst Telecomunicacoes, P-1049001 Lisbon, Portugal
来源:
IEEE ACCESS
|
2018年
/
6卷
关键词:
Channel estimation;
time synchronization;
compressive sensing;
sparse signal recovery;
SPARSITY;
D O I:
10.1109/ACCESS.2018.2871060
中图分类号:
TP [自动化技术、计算机技术];
学科分类号:
0812 ;
摘要:
Supporting spontaneous low-latency machine-type communications requires fast synchronization and channel estimation at the receiver. The problems of synchronizing the received frame and estimating the channel coefficients are often addressed separately with the later one relying on accurate timing acquisition. While these conventional approaches can be adequate in flat fading environments, time dispersive channels can have a negative impact on both tasks and severely degrade the performance of the receiver. To circumvent this large degradation, in this paper, we consider the use of a sparse-based reconstruction approach for joint timing synchronization and channel estimation by formulating the problem in a form that is closely related to compressive sensing framework. Using modified versions of well-known sparse reconstruction techniques, which can take into account the additional signal structure in addition to sparsity, it is shown through numerical simulations that, even with short training sequences, excellent timing synchronization and channel estimation performance can be achieved, both in single user and multiuser scenarios.
机构:
Hanyang Univ, Dept Elect & Biomed Engn, Seoul 04763, South KoreaHanyang Univ, Dept Elect & Biomed Engn, Seoul 04763, South Korea
Choi, Jun Won
Shim, Byonghyo
论文数: 0引用数: 0
h-index: 0
机构:
Seoul Natl Univ, Inst New Media & Commun, Seoul 151742, South Korea
Seoul Natl Univ, Sch Elect & Comp Engn, Seoul 151742, South KoreaHanyang Univ, Dept Elect & Biomed Engn, Seoul 04763, South Korea
Shim, Byonghyo
Ding, Yacong
论文数: 0引用数: 0
h-index: 0
机构:
Univ Calif San Diego, Dept Elect & Comp Engn, San Diego, CA 92122 USAHanyang Univ, Dept Elect & Biomed Engn, Seoul 04763, South Korea
Ding, Yacong
Rao, Bhaskar
论文数: 0引用数: 0
h-index: 0
机构:
Univ Calif San Diego, Dept Elect & Comp Engn, San Diego, CA 92122 USAHanyang Univ, Dept Elect & Biomed Engn, Seoul 04763, South Korea
机构:
Hanyang Univ, Dept Elect & Biomed Engn, Seoul 04763, South KoreaHanyang Univ, Dept Elect & Biomed Engn, Seoul 04763, South Korea
Choi, Jun Won
Shim, Byonghyo
论文数: 0引用数: 0
h-index: 0
机构:
Seoul Natl Univ, Inst New Media & Commun, Seoul 151742, South Korea
Seoul Natl Univ, Sch Elect & Comp Engn, Seoul 151742, South KoreaHanyang Univ, Dept Elect & Biomed Engn, Seoul 04763, South Korea
Shim, Byonghyo
Ding, Yacong
论文数: 0引用数: 0
h-index: 0
机构:
Univ Calif San Diego, Dept Elect & Comp Engn, San Diego, CA 92122 USAHanyang Univ, Dept Elect & Biomed Engn, Seoul 04763, South Korea
Ding, Yacong
Rao, Bhaskar
论文数: 0引用数: 0
h-index: 0
机构:
Univ Calif San Diego, Dept Elect & Comp Engn, San Diego, CA 92122 USAHanyang Univ, Dept Elect & Biomed Engn, Seoul 04763, South Korea