TDMA communication method and apparatus using cyclic spreading codes

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US007339955B2

(12) United States Patent

Lakkis

(io) Patent No.: (45) Date of Patent:

US 7,339,955 B2 Mar. 4, 2008

(54) TDMA COMMUNICATION METHOD AND APPARATUS USING CYCLIC SPREADING CODES

(75) Inventor: Ismail Lakkis, San Diego, CA (US)

(73) Assignee: Pulse-LINK, Inc., Carlsbad, CA (US)

( * ) Notice: Subject to any disclaimer, the term of this patent is extended or adjusted under 35 U.S.C. 154(b) by 450 days.

(21) Appl. No.: 10/961,592

(22) Filed: Oct. 8, 2004

(65) Prior Publication Data

US 2005/0068932 Al Mar. 31, 2005

Related U.S. Application Data

(63) Continuation-in-part of application No. 09/670,054, filed on Sep. 25, 2000, now Pat. No. 7,031,371.

(51) Int. CI.

H04J 3/00 (2006.01)

(52) U.S. CI 370/498; 370/480; 370/336;

370/337; 455/403; 455/17; 455/447; 455/39

(58) Field of Classification Search 370/347,

370/324, 350, 336, 337, 335, 515, 513, 512, 370/509, 510, 532, 533, 534, 535-542, 312, 370/310, 482, 480, 479, 464, 498, 209, 320, 370/342; 375/1, 114, 297, 312, 260, 147, 375/148, 347, 200, 206, 208, 367, 340, 134, 375/137, 140, 145, 365, 366, 368, 238; 455/126, 455/127.1, 403, 424, 425, 456.5, 456.6, 550.1, 455/575.1, 67.11, 63.1, 561, 454, 61, 422.1, 455/450, 447, 17, 59, 41.2 See application file for complete search history.

(56) References Cited

U.S. PATENT DOCUMENTS

Systems and methods of ultra-wideband communication are provided. In one embodiment, an ultra-wideband communication system divides a stream of data conveying symbols into a plurality of unspread substreams. A common spreading code is generated at the ultra-wideband transmitter, and each of the unspread substreams are spread using the common spreading code to form a plurality of spread substreams. The spread substreams are combined to form a composite signal that is transmitted. This Abstract is provided for the sole purpose of complying with the Abstract requirement rules that allow a reader to quickly ascertain the subject matter of the disclosure contained herein. This Abstract is submitted with the explicit understanding that it will not be used to interpret or to limit the scope or the meaning of the claims.

3 Claims, 9 Drawing Sheets

U.S. PATENT DOCUMENTS

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