Investigation of Transmitter Filtering Method for Random Access with Channel Identifier Linked Receiver Beamforming

Shogo Uchida, Nobuhide Nonaka, Kenichi Higuchi

研究成果: Conference contribution査読

抄録

This paper proposes a transmitter filtering (TF) method for random access using physical channel identifier (PCID)-linked receiver beamforming (BF). The role of the transmitter filtering in this system is to reduce the delay spread of the multipath channel, reduce the multipath interference, and increase the received signal power gain. There is room for improvement in previous zero-forcing (ZF)-based and minimum mean squared error (MMSE)-based TF methods in terms of the trade-off between multipath interference and power gain in view of the actual channel estimation accuracy. The proposed method is characterized by the fact that the number of effective paths after TF operation is set to two. By increasing the number of effective paths from one to two and adaptively adjusting the power and phase difference between the two paths according to the actual channel, the proposed method improves the power gain compared to the ZF-based method and reduces the generation of many undetectable small paths compared to the MMSE method, thus reducing multipath interference. Computer simulations quantitatively show that the proposed method improves the error rate compared to that for the conventional method.

本文言語English
ホスト出版物のタイトル2021 IEEE 94th Vehicular Technology Conference, VTC 2021-Fall - Proceedings
出版社Institute of Electrical and Electronics Engineers Inc.
ISBN(電子版)9781665413688
DOI
出版ステータスPublished - 2021
イベント94th IEEE Vehicular Technology Conference, VTC 2021-Fall - Virtual, Online, United States
継続期間: 27 9月 202130 9月 2021

出版物シリーズ

名前IEEE Vehicular Technology Conference
2021-September
ISSN(印刷版)1550-2252

Conference

Conference94th IEEE Vehicular Technology Conference, VTC 2021-Fall
国/地域United States
CityVirtual, Online
Period27/09/2130/09/21

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