| US 7,593,357 B2 | ||
| Transmit processing using receiver functions | ||
| Fatih Ozluturk, Port Washington, N.Y. (US); and Jung-Lin Pan, Selden, N.Y. (US) | ||
| Assigned to InterDigital Technology Corporation, Wilmington, Del. (US) | ||
| Filed on Dec. 31, 2002, as Appl. No. 10/335,347. | ||
| Claims priority of provisional application 60/396490, filed on Jul. 17, 2002. | ||
| Claims priority of provisional application 60/368639, filed on Mar. 28, 2002. | ||
| Prior Publication US 2003/0185192 A1, Oct. 02, 2003 | ||
| Int. Cl. H04B 7/00 (2006.01); H04B 1/00 (2006.01); H04K 1/02 (2006.01) | ||
| U.S. Cl. 370—310 [375/148; 375/296] | 6 Claims |
| 1. A user equipment comprising:
a spreading device configured to spread data with a code;
a pre-equalizer configured to process the spread data with a provided channel response matrix H, approximate a channel that
the data will experience after transmission, and equalize a signal received by the user equipment using a second channel response
matrix H; and
an antenna configured to transmit the processed spread data, whereby recovering data from the processed spread data is at
reception of the processed spread data without equalizing to compensate for a channel response; and
a code matched filter configured to recover the data from a received vector; and
wherein the pre-equalizer is further configured to perform pre-equalizing and equalizing by multiplying the spread data by
HH(HHH+o −2I)−1 ,where o −2 is a noise variance and I is an identity matrix.
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