Compensation for residual frequency offset, phase noise and...

Pulse or digital communications – Receivers – Interference or noise reduction

Reexamination Certificate

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C375S130000, C375S149000, C375S354000, C375S355000

Reexamination Certificate

active

07346135

ABSTRACT:
Improved performance, particularly gain in SNR, in high-bandwidth OFDM receivers, software and systems is achieved by compensating channel estimates not only for carrier frequency offset and phase noise, but also for interference caused by sample phase jitter. At high bandwidths, e.g. using 256 QAM symbol constellation, significant SNR improvement is gained by determining and applying a corresponding compensation to each data sub-carrier channel, the compensation preferably including a term that increases linearly with the sub-carrier index.

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