| US 7,489,733 B2 | ||
| Channel estimation using a minimized channel prediction interval | ||
| Colin D. Frank, Park Ridge, Ill. (US); Robert J. Corke, Glen Ellyn, Ill. (US); Steven C. Jasper, Hoffman Estates, Ill. (US); and Isam R. Makhlouf, Lake Zurich, Ill. (US) | ||
| Assigned to Motorola, Inc., Schaumburg, Ill. (US) | ||
| Filed on Apr. 18, 2005, as Appl. No. 11/108,291. | ||
| Prior Publication US 2006/0233268 A1, Oct. 19, 2006 | ||
| Int. Cl. H04K 1/10 (2006.01); H04L 27/28 (2006.01) | ||
| U.S. Cl. 375—260 | 16 Claims |
| 1. A method for channel estimation for use in decoding a current Orthogonal Frequency Division Multiplexing (OFDM) symbol,
the method comprising the steps of:
a) receiving a first OFDM symbol over a plurality of OFDM sub-channels and generating a plurality of demodulated symbols for
the first OFDM symbol comprising a demodulated symbol corresponding to each sub-channel;
b) generating decoder output code symbols corresponding to a subset of the plurality of demodulated symbols;
c) determining that a set of the decoder output code symbols comprise a set of reference symbols corresponding to at least
a portion of the subset of the plurality of demodulated symbols;
d) generating the set of reference symbols;
e) generating a set of channel estimates based on the set of reference symbols and the at least a portion of the subset of
the plurality of demodulated symbols, for use in decoding the current OFDM symbol; and
f) repeating steps b-e until a channel estimate for each demodulated symbol corresponding to the first OFDM symbol has been
generated.
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