Invention Grant
- Patent Title: Methods and apparatus for determining a direction of arrival in a wireless communication system
- Patent Title (中): 用于确定到达无线通信系统的方向的方法和装置
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Application No.: US10056434Application Date: 2002-01-24
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Publication No.: US06812889B2Publication Date: 2004-11-02
- Inventor: William Francis Alexander, Jr.
- Applicant: William Francis Alexander, Jr.
- Main IPC: G01S504
- IPC: G01S504

Abstract:
Methods and apparatus are provided for determining a Direction of Arrival (DOA) of a remote unit (22) in a communication system (20). The apparatus includes a first antenna (32) and a second antenna (36) configured to receive an RF signal (32) having a plurality of scattered rays produced by multi-path scattering. A ray selector (114) of the apparatus is configured to identify a first ray and second ray from the scattered plurality of rays received at the first antenna (32) and the second antenna (36). A difference calculator (116) is configured to determine an amplitude difference (120) and a phase difference (122) between the first ray and said second ray, and an angle estimator (118) is configured to calculate a plurality of DOA values (142) based upon the phase difference (122) and select one of the plurality of DOA values (142) utilizing the amplitude difference (120).
Public/Granted literature
- US20030137454A1 Methods and apparatus for determining a direction of arrival in a wireless commmunication system Public/Granted day:2003-07-24
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