Repeater system for strong signal environments

Details Repeater system for strong signal environments Repeater system for strong signal environments

2005-11-30

2009-06-30

Anderson, Matthew D (Department: 2618)

Telecommunications

Carrier wave repeater or relay system

Portable or mobile repeater

15, 15, 15

Reexamination Certificate

active

07555261

ABSTRACT:
A repeater system combines co-located antennas, an intentional imbalance in signal amplification between downlink and uplink, stability management and an amplification indicator to create a user-installed solution to co-channel interference within cellular systems, in strong signal environments such as elevated locations or high-rise building. The invention may be particularly relevant to cellular systems, such as CDMA, that allow limited imbalance between uplink and downlink path losses, thus enabling the design of an inexpensive repeater with a weaker or non-existent uplink, and which creates moderate signal amplification for selected line-of-sight signals, defeating co-channel interference over a small area. The difference in signal amplification on the downlink and uplink is maintained at a level below the capacity of the system to support imbalance, guaranteeing reliable cellular calls.

REFERENCES:
patent: 5983072 (1999-11-01), Schroderus

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