Decoding with memory in RFID system

Details Decoding with memory in RFID system Decoding with memory in RFID system

2007-03-12

2008-11-11

Walsh, Daniel (Department: 2887)

Registers

Coded record sensors

C235S487000, C235S492000, C340S572100, C340S010100, C341S050000

Reexamination Certificate

active

07448547

ABSTRACT:
RFID readers, RFID tags, software, and methods decode a signal received in an RFID system. From received data, a decoder determines a number of possible test series for the output. In one embodiment, the decoder uses a memory of a previous sample to derive a subsequent sample in the test series, so as to ensure that all the test series are valid. A metric is then computed for how well each test series fits the received data. The metrics are compared to select for output the test series with the best fit. In a further embodiment, at least one of the metrics is further used to determine if a collision were present.

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