The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. ex. Some numerals are expressed as "XNUMX".
Copyrights notice
The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. Copyrights notice
5G 이상을 위한 핵심 기술인 MU-MIMO(Multi-User Multi-Input Multi-Output)는 하나의 액세스 포인트(AP)에서 여러 사용자에게 동시 전송을 허용하여 Gbps 다운링크 속도를 달성할 수 있습니다. 그러나 전체 CSI 피드백의 막대한 오버헤드가 빔포밍으로 얻을 수 있는 이득을 압도할 수 있습니다. 피드백 오버헤드를 줄이기 위해 CSI를 압축하는 방법에 대한 많은 연구가 있었지만, 채널 상태의 정확도가 떨어지기 때문에 빔포밍 성능이 저하될 수 있습니다. 피드백 오버헤드와 정확성 사이의 균형을 해결하기 위해 우리는 210단계 다중 경로 프로파일 기반 피드백 프로토콜(MPF)을 제시합니다. 첫 번째 단계에서는 CSI 피드백과 비교하여 채널 상태가 크기는 작지만 사용자 선택에 충분히 정확한 다중 경로 프로파일로 표시됩니다. 한편, 우리는 피드백을 더욱 줄이기 위해 암시적 폴링 방식을 제안합니다. 두 번째 단계에서는 선택된 사용자만이 CSI 정보를 AP로 전송하여 낮은 오버헤드와 스티어링 매트릭스 계산의 정확성을 보장합니다. USRP NXNUMX을 사용하여 MPF를 구현하고 평가합니다. 실험에 따르면 MPF는 다양한 무선 환경에서 대체 방식보다 성능이 뛰어납니다.
Aijing LI
Shanghai Jiao Tong University,Army Engineering University of PLA
Chao DONG
Nanjing University of Aeronautics and Astronautics
Zhimin LI
Army Engineering University of PLA
Qihui WU
Nanjing University of Aeronautics and Astronautics
Guodong WU
Army Engineering University of PLA
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부
Aijing LI, Chao DONG, Zhimin LI, Qihui WU, Guodong WU, "A Two-Stage Feedback Protocol Based on Multipath Profile for MU-MIMO Networks" in IEICE TRANSACTIONS on Communications,
vol. E103-B, no. 5, pp. 559-569, May 2020, doi: 10.1587/transcom.2019EBP3102.
Abstract: As a key technology for 5G and beyond, Multi-User Multi-Input Multi-Output (MU-MIMO) can achieve Gbps downlink rate by allowing concurrent transmission from one Access Point (AP) to multiple users. However, the huge overhead of full CSI feedback may overwhelm the gain yielded by beamforming. Although there have been many works on compress CSI to reduce the feedback overhead, the performance of beamforming may decrease because the accuracy of channel state degrades. To address the tradeoff between feedback overhead and accuracy, we present a two-stage Multipath Profile based Feedback protocol (MPF). In the first stage, compared with CSI feedback, the channel state is represented by multipath profile which has a smaller size but is accurate enough for user selection. Meanwhile, we propose an implicit polling scheme to decrease the feedback further. In the second stage, only the selected users send their CSI information to the AP to guarantee the low overhead and accuracy of steering matrix calculation. We implement and evaluate MPF with USRP N210. Experiments show that MPF can outperform alternative schemes in a variety of radio environments.
URL: https://global.ieice.org/en_transactions/communications/10.1587/transcom.2019EBP3102/_p
부
@ARTICLE{e103-b_5_559,
author={Aijing LI, Chao DONG, Zhimin LI, Qihui WU, Guodong WU, },
journal={IEICE TRANSACTIONS on Communications},
title={A Two-Stage Feedback Protocol Based on Multipath Profile for MU-MIMO Networks},
year={2020},
volume={E103-B},
number={5},
pages={559-569},
abstract={As a key technology for 5G and beyond, Multi-User Multi-Input Multi-Output (MU-MIMO) can achieve Gbps downlink rate by allowing concurrent transmission from one Access Point (AP) to multiple users. However, the huge overhead of full CSI feedback may overwhelm the gain yielded by beamforming. Although there have been many works on compress CSI to reduce the feedback overhead, the performance of beamforming may decrease because the accuracy of channel state degrades. To address the tradeoff between feedback overhead and accuracy, we present a two-stage Multipath Profile based Feedback protocol (MPF). In the first stage, compared with CSI feedback, the channel state is represented by multipath profile which has a smaller size but is accurate enough for user selection. Meanwhile, we propose an implicit polling scheme to decrease the feedback further. In the second stage, only the selected users send their CSI information to the AP to guarantee the low overhead and accuracy of steering matrix calculation. We implement and evaluate MPF with USRP N210. Experiments show that MPF can outperform alternative schemes in a variety of radio environments.},
keywords={},
doi={10.1587/transcom.2019EBP3102},
ISSN={1745-1345},
month={May},}
부
TY - JOUR
TI - A Two-Stage Feedback Protocol Based on Multipath Profile for MU-MIMO Networks
T2 - IEICE TRANSACTIONS on Communications
SP - 559
EP - 569
AU - Aijing LI
AU - Chao DONG
AU - Zhimin LI
AU - Qihui WU
AU - Guodong WU
PY - 2020
DO - 10.1587/transcom.2019EBP3102
JO - IEICE TRANSACTIONS on Communications
SN - 1745-1345
VL - E103-B
IS - 5
JA - IEICE TRANSACTIONS on Communications
Y1 - May 2020
AB - As a key technology for 5G and beyond, Multi-User Multi-Input Multi-Output (MU-MIMO) can achieve Gbps downlink rate by allowing concurrent transmission from one Access Point (AP) to multiple users. However, the huge overhead of full CSI feedback may overwhelm the gain yielded by beamforming. Although there have been many works on compress CSI to reduce the feedback overhead, the performance of beamforming may decrease because the accuracy of channel state degrades. To address the tradeoff between feedback overhead and accuracy, we present a two-stage Multipath Profile based Feedback protocol (MPF). In the first stage, compared with CSI feedback, the channel state is represented by multipath profile which has a smaller size but is accurate enough for user selection. Meanwhile, we propose an implicit polling scheme to decrease the feedback further. In the second stage, only the selected users send their CSI information to the AP to guarantee the low overhead and accuracy of steering matrix calculation. We implement and evaluate MPF with USRP N210. Experiments show that MPF can outperform alternative schemes in a variety of radio environments.
ER -