Telecommunications – Receiver or analog modulated signal frequency converter – With wave collector
Patent
1994-06-01
1998-04-14
Eisenzopf, Reinhard J.
Telecommunications
Receiver or analog modulated signal frequency converter
With wave collector
455134, 455135, 455272, 375347, H04B 106
Patent
active
057405263
ABSTRACT:
A base site (100) employs a method and apparatus for selecting two of a plurality of antennas (101-106) from which to receive a communication signal. A first signal quality metric is measured for a communication signal received from a first antenna (102) and a second signal quality metric is measured for the communication signal received from a second antenna (103). When the first signal quality metric differs from the second signal quality metric by a threshold, a signal receiver (113) is coupled to a third antenna (e.g., 101) and a third signal quality metric is measured for the communication signal received from the third antenna (101). Based on the three signal quality metrics, a primary antenna and a secondary antenna are selected from which to receive the communication signal.
REFERENCES:
patent: 4977616 (1990-12-01), Linder et al.
patent: 5119501 (1992-06-01), Perry et al.
patent: 5203024 (1993-04-01), Yamao
patent: 5375259 (1994-12-01), Lee
Daniel R. Tayloe "Space Diversity Hopping For Digital Data Transmission" Motorola Technical Developments vol. 10, Mar. 1990, Motorola, Inc. pp. 62-63.
Yashushi Yamao and Yoshinori Nagao "Predictive Antenna Selection Diversity (PASD) For TDMA Mobile Radio" 1991 IEEE International Conference on Communications vol. 46, Mar. 1991 pp. 1480-1484.
Bonta Jeffrey D.
Schaeffer Dennis Ray
Eisenzopf Reinhard J.
To Doris
Toler Jeffrey G.
Warren Raymond J.
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