Channel estimation and ICI cancellation for OFDM

Pulse or digital communications – Receivers – Interference or noise reduction

Reexamination Certificate

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C375S285000

Reexamination Certificate

active

07995688

ABSTRACT:
An iterative channel estimation and inter-carrier interference (ICI) cancellation process is provided for OFDM receivers, and more particularly for mobile OFDM receivers. The iterative process uses decision feedback to estimate both the channel gain and the ICI gains, the latter being the multiplicative gain applied to the adjacent sub-carriers. Thus the receiver performs equalization and ICI cancellation in an iterative fashion and is advantageous for estimating fast fading channels.

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Russell et al. “Interchannel Interference Analysis of OFDM in a Mobile Environment”, (IEEE VTC '95, 1995, pp. 820-824).

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