Channel estimation based on superimposed pilot and weighted averaging.

Qun Wu, Xiao Zhou, Chengyou Wang, Zhiliang Qin

Abstract read

In one paragraph

Article in Scientific reports, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

0numbers the graph read from it

0cells of the map it votes in

0citing papers in PubMed

–field-weighted citation impact

1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

0 citing papers in PubMed.

No citing paper in PubMed yet.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

4 authors.

Qun WuSchool of Mechanical, Electrical and Information Engineering, Shandong University, Weihai, 264209, China.

Xiao ZhouSchool of Mechanical, Electrical and Information Engineering, Shandong University, Weihai, 264209, China. zhouxiao@sdu.edu.cn.

Chengyou WangSchool of Mechanical, Electrical and Information Engineering, Shandong University, Weihai, 264209, China.

Zhiliang QinSchool of Mechanical, Electrical and Information Engineering, Shandong University, Weihai, 264209, China.

Funding

16th Student Research Training Program (SRTP) at Shandong University, Weihai A21246Education and Teaching Reform Research Project of Shandong University, Weihai Y2021054Joint Fund of Shandong Provincial Natural Science Foundation ZR2021LZHP003Natural Science Foundation of Shandong Province ZR2020MF008Natural Science Foundation of Shandong Province ZR2021MF060

6 · The paper itself

Abstract

Channel estimation based on superimposed pilot (SP) is a challenge in orthogonal frequency division multiplexing (OFDM) systems. To reduce the pilot data interference in the SP and estimate the channel state information accurately, a weighted averaging (WA) channel estimation method based on the superimposed pilot is proposed in this paper. At the transmitter, two signals with data symbols and pilot symbols superimposed at different subcarriers are transmitted. At the receiver, the elimination scheme is proposed to remove the pilot data interference. Based on the temporal correlation of wireless channels, the WA method is used to reduce the interference caused by additive white Gaussian noise in the channel. Simulation results verify that the proposed method can be applied to different channel scenarios. It has better normalized mean square error and bit error rate performance than other existing methods, and the superimposed pilot can improve the throughput of wireless communication systems.

Identifiers

PMID35717479

DOI10.1038/s41598-022-14482-6

PMCPMC9206651

What OpenQuestion holds

Textmetadata

LicenceCC BY

Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.