| US 7,499,397 B1 | ||
| Broadband network for coaxial cable using multi-carrier modulation | ||
| Anton Monk, San Diego, Calif. (US); Brett Bernath, San Diego, Calif. (US); Itzhak Gurantz, San Diego, Calif. (US); Ladd El Wardani, La Jolla, Calif. (US); and Ron Porat, La Jolla, Calif. (US) | ||
| Assigned to Entropic Communications Inc., San Diego, Calif. (US) | ||
| Filed on Nov. 11, 2007, as Appl. No. 11/938,283. | ||
| Application 11/938283 is a division of application No. 10/322834, filed on Dec. 18, 2002, granted, now 7,295,518. | ||
| Application 10/322834 is a continuation of application No. 10/230687, filed on Aug. 29, 2002, abandoned. | ||
| Claims priority of provisional application 60/385361, filed on Jun. 03, 2002. | ||
| Claims priority of provisional application 60/363420, filed on Mar. 12, 2002. | ||
| Claims priority of provisional application 60/316820, filed on Aug. 30, 2001. | ||
| Int. Cl. G06F 11/00 (2006.01); H04L 5/16 (2006.01) | ||
| U.S. Cl. 370—230.1 [370/235; 370/238; 725/127; 375/260] | 2 Claims |
| 1. A method of characterizing a communication channel used for communication between devices comprising the steps of:
a) forming a probe message comprising a preamble, a channel estimation training sequence, and a bit loading training sequence;
b) transmitting the probe message through the communication channel;
c) receiving the probe message;
d) from the received probe message, analyzing the preamble to estimate carrier and timing offset, analyzing the channel estimation
training sequence to produce a set of equalizer coefficients, and analyzing the bit loading training sequence to determine
a bit loading profile used for transmitting data.
|