- 专利标题: Radio communication device and arrival direction estimation method
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申请号: US12979305申请日: 2010-12-27
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公开(公告)号: US08520641B2公开(公告)日: 2013-08-27
- 发明人: Takaaki Kisigami , Takashi Fukagawa , Yasuaki Yuda , Keiji Takausaki , Shoji Miyamoto
- 申请人: Takaaki Kisigami , Takashi Fukagawa , Yasuaki Yuda , Keiji Takausaki , Shoji Miyamoto
- 申请人地址: JP Osaka
- 专利权人: Panasonic Corporation
- 当前专利权人: Panasonic Corporation
- 当前专利权人地址: JP Osaka
- 代理机构: Pearne & Gordon LLP
- 优先权: JP2002-132069 20020507; JP2002-220302 20020729
- 主分类号: H04W4/00
- IPC分类号: H04W4/00
摘要:
A receiver having an array antenna estimates arrival directions of multiple paths that arrive with an angular spread. Consequently, arrival direction estimation accuracy can be ensured without increasing throughput even if the power every path is low by estimating an average arrival direction of an entire set of multiple paths having the angular spread from a result of one angular spectrum by multiple correlation operation units that perform mutual correlation operations with pilot signals for baseband signals received by the array antenna, a path detection unit that detects multiple arrival path receiving timings by generating a delay profile based on output of each of the correlation operation units, a path correlation value synthesis unit that synthesizes a correlation operation value calculated in the multiple correlation operation units and an arrival direction estimation unit that collectively estimates multiple path arrival directions using output of the path correlation value synthesis unit.