RADIO COMMUNICATION SYSTEM, RADIO TRANSMISSION DEVICE AND RADIO RECEPTION DEVICE
PROBLEM TO BE SOLVED: To estimate a phase error without being influenced by interferences from an adjacent symbol and an adjacent subcarrier of a pilot signal in a radio communication system to which FBMC/OQAM is applied.SOLUTION: A radio transmission device comprises control means for inserting a n...
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Main Authors | , , , , , |
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Format | Patent |
Language | English Japanese |
Published |
11.01.2018
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Subjects | |
Online Access | Get full text |
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Summary: | PROBLEM TO BE SOLVED: To estimate a phase error without being influenced by interferences from an adjacent symbol and an adjacent subcarrier of a pilot signal in a radio communication system to which FBMC/OQAM is applied.SOLUTION: A radio transmission device comprises control means for inserting a null subcarrier consisting of a null signal between a pilot subcarrier consisting of a known signal and a data subcarrier consisting of a data signal in a frequency domain, cancelling an interference from a data subcarrier that is adjacent in the frequency domain, to the pilot subcarrier in the frequency domain, and limiting an interference component included in a pilot signal received in a radio reception device onto to an interference component caused by a symbol that is adjacent in a time domain. The radio reception device comprises phase error estimation means for generating a pilot signal including an interference component caused by a known adjacent symbol, as a reference signal, comparing the generated reference signal with the received pilot signal and estimating a phase error while taking the interference from the adjacent symbol into account.SELECTED DRAWING: Figure 3
【課題】FBMC/OQAMを適用した無線通信システムにおいて、パイロット信号の隣接シンボルおよび隣接サブキャリアからの干渉の影響を受けずに位相誤差を推定する。【解決手段】無線送信装置は、周波数領域において既知の信号からなるパイロットサブキャリアとデータ信号からなるデータサブキャリアとの間に、ヌル信号からなるヌルサブキャリアを挿入し、周波数領域において隣接するデータサブキャリアからパイロットサブキャリアへの干渉を除去し、無線受信装置に受信したパイロット信号に含まれる干渉成分が時間領域において隣接するシンボルによるもののみとする制御手段を備え、無線受信装置は、既知の隣接するシンボルによる干渉成分を含むパイロット信号を参照信号として生成し、生成した参照信号と受信したパイロット信号とを比較し、隣接するシンボルからの干渉を考慮した位相誤差を推定する位相誤差推定手段を備える。【選択図】 図3 |
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Bibliography: | Application Number: JP20160132352 |