RFID TAGS WITH CDMA COMMUNICATION CAPABILITIES

摘要

An apparatus for use in an RFID data collection system includes an antenna portion for wirelessly exchanging signals and a memory portion for storing RFID data. A signal processing portion is coupled among the antenna portion and the memory portion. The signal processing portion is configured to receive RFID data and to at least encode or decode the received RFID data via at least one spreading code, such as a mutually orthogonal code. Other configurations are also disclosed.

主权项

1. An RFID tag, comprising:
at least one antenna; and a processor coupled with the at least one antenna, the processor:
generating an initial protocol communication based on orthogonal code stored in memory, wherein the initial protocol communication indicates that the RFID tag is capable of code division multiple access (CDMA) communication,encoding the orthogonal code to produce a CDMA encoded signal indicating that the RFID tag is capable of code CDMA communications,transmitting data from the at least one antenna using a non-CDMA encoded initial protocol communication, andtransmitting the CDMA-encoded signal from the at least one antenna.