Pulse or digital communications – Spread spectrum – Frequency hopping
Reexamination Certificate
2005-08-16
2005-08-16
Bocure, Tesfaldet (Department: 2631)
Pulse or digital communications
Spread spectrum
Frequency hopping
C375S350000
Reexamination Certificate
active
06931051
ABSTRACT:
A wireless communication network comprising a wireless receiver. The wireless receiver comprises at least a first antenna for receiving packets, wherein each of the received packets comprises a plurality of bits and each of the plurality of bits is modulated by a frequency offset. The wireless receiver also comprises circuitry for cycling through a hopping sequence, wherein the hopping sequence comprises a sequence of frequency bands and circuitry for demodulating each received packet in response to a frequency band in the hopping sequence. The wireless receiver also comprises circuitry for detecting the frequency offset of each of the plurality of bits and converting the frequency offset of each of the plurality of bits into a corresponding DC voltage for each of the plurality of bits. Still further, the wireless receiver comprises circuitry for sampling the DC voltage for each of the plurality of bits and providing a DC offset voltage for each of the plurality of bits, and it also comprises circuitry for providing a filtered DC offset voltage by filtering the DC offset voltage. Lastly, the wireless receiver also comprises circuitry for providing a digital value corresponding to each of the plurality of bits in response to the corresponding DC voltage for each of the plurality of bits as adjusted in response to the filtered DC offset voltage.
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Dabak Anand G.
Nafie Mohammed H.
Bocure Tesfaldet
Brady III Wade James
Neerings Ronald O.
Telecky , Jr. Frederick J.
Texas Instruments Incorporated
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