Pulse or digital communications – Receivers – Angle modulation
Reexamination Certificate
2006-03-07
2006-03-07
Chin, Stephen (Department: 2634)
Pulse or digital communications
Receivers
Angle modulation
C375S261000, C375S362000, C375S375000
Reexamination Certificate
active
07010062
ABSTRACT:
A method of compensating for carrier frequency and phase errors of a received multi-carrier modulated signal. The received multi-carrier signal including modulated carriers for transmitting known data and unmodulated carriers for error correction, comprising, time domain down converting the received multi-carrier signal to base-band to provide a down-converted signal, the down-converted signal including a plurality of modulated carriers for transmitting known data and unmodulated carriers for error correction. Sampling an unmodulated carrier of the down-converted signal to provide received data samples. Providing a reference signal derived from the unmodulated carrier of the down-converted signal. And, estimating phase errors from a phase difference between the ummodulated carrier and the reference signal derived from the unmodulated carrier of the down-converted signal to provide a plurality of received sample phase error estimates for each modulated carrier.
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Joshi Robindra B.
Lin Thuji S.
Putnam Jeffrey S.
Yang Paul T.
Broadcom Corporation
Chin Stephen
Christie Parker & Hale LLP
Wang Ted M.
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