Multiple devices communicating on a single communication...

Details Multiple devices communicating on a single communication... Multiple devices communicating on a single communication...

2011-08-16

2011-08-16

Tran, Khanh C (Department: 2611)

Pulse or digital communications

Pulse width modulation

Reexamination Certificate

active

08000385

ABSTRACT:
The present invention provides apparatuses, methods, and computer readable media for supporting communications for a plurality of transmitter-receiver pairs on a common frequency spectrum. A transmitting device transmits a consecutively sequenced signal sequentially containing messages to a corresponding receiving device. A duty cycle adjustment circuit determines the duration between adjacent messages so that the consecutively sequenced signal is characterized by a randomized duty cycle. The duty cycle adjustment circuit selects the duration from a sequence that is characterized by an average duration. The duty cycle adjustment circuit obtains the duration from an array by determining an index from a function of a random variable. A receiving device receives a consecutively sequenced signal sequentially containing messages from a transmitting device, where the consecutively sequenced signal is characterized by a randomized duty cycle. A processing circuit detects the messages and initiates an error signal when a predetermined number of consecutive invalid messages are detected.

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