Method and apparatus for determining with high resolution the fi

Details Method and apparatus for determining with high resolution the fi Method and apparatus for determining with high resolution the fi

1994-01-07

1996-09-03

Chin, Stephen

Pulse or digital communications

Testing

375347, 455 332, 4551791, H04Q 728

Patent

active

055532438

ABSTRACT:
A method and apparatus for determining with high resolution the fidelity of communications over a communications channel is disclosed. Portable/mobile radios freely roaming between multiple trunked RF communications sites calculate the fidelity of communications received over current and alternate channels with comprehensive, high bit error resolution using a weighted average error dispersion procedure. The weighted average error dispersion analysis generates for each group of redundant messages (and in some instances subpreamble bits) received by a roaming radio in each message frame a weighted average error dispersion number whose incrementally increasing magnitude reflects deteriorating signal fidelity. Decisions about switching to alternate communications channels are made by the roaming radio based on the incrementally changing weighted error dispersion number so that communication channels may be selected to achieve optimum signal fidelity and continuity of communication.

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