Method and apparatus for determining an optical communications c

Details Method and apparatus for determining an optical communications c Method and apparatus for determining an optical communications c

1996-02-06

1998-06-02

Chin, Stephen

Pulse or digital communications

Testing

455437, 455423, 455525, 455 673, H04B 346, H04B 1700, H04Q 120

Patent

active

057612404

ABSTRACT:
A method and apparatus are provided for determining the fidelity of one or more communications channels with high efficiency and resolution with particularly advantageous application to digital communications in a radio communications environment where portable radios roaming across multiple RF site coverage areas strive to monitor the optimal control channel having the highest signal fidelity under current receiving conditions. The radio collects signal fidelity information for alternative communications channel in very short time intervals without missing important messages on a communications channel currently being monitored by that radio. Signal fidelity of the alternative communications channel is calculated without the radio being synchronized either at a digital bit or frame level to the alternative communications channel. The fidelity calculation provides information both about the accuracy (i.e., the digital value of a received digital pulse) and the quality (i.e., the level of distortion of the received pulse) of the received signal.

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