| US 7,558,191 B2 | ||
| Method of OFDM communication using superposition coding | ||
| Pantelis Monogioudis, Randolph, N.J. (US); Shirish Nagaraj, Cedar Knolls, N.J. (US); Sivarama Krishnan Venkatesan, Milltown, N.J. (US); and Harish Viswanathan, Morristown, N.J. (US) | ||
| Assigned to Alcatel-Lucent USA Inc., Murray Hill, N.J. (US) | ||
| Filed on Sep. 07, 2006, as Appl. No. 11/516,840. | ||
| Prior Publication US 2008/0062857 A1, Mar. 13, 2008 | ||
| Int. Cl. H04J 11/00 (2006.01) | ||
| U.S. Cl. 370—208 [375/316] | 7 Claims |
| 1. A method of signal processing in a receiver configured to process signals at least at a sample level and a symbol level,
comprising:
sampling an incoming wireless signal;
subjecting the sampled signal to discrete Fourier transform (DFT) processing, thereby to obtain a composite symbol-level signal;
recovering a first block of information from the composite symbol-level signal;
from the recovered first block of information, regenerating at the sample level a first estimate of that portion of the sampled
incoming signal that is attributable to the first block of information;
at the sample level, subtracting the first estimate from the sampled incoming signal, thereby to provide a second estimate
of that portion of the sampled incoming signal that is attributable to a second block of information;
subjecting the second estimate to DFT processing, thereby to obtain a further symbol-level signal; and
recovering the second block of information from the further symbol-level signal.
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