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US006891816B2

(12) United States Patent ao) Patent No.: us 6,891,816 B2

Smith et al. (45) Date of Patent: May 10,2005 Page 2

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(21) Appl. No.: 09/882,270

(22) Filed: Jun. 14, 2001

(65) Prior Publication Data

US 2002/0034171 Al Mar. 21, 2002

Related U.S. Application Data

(63) Continuation ol application No. 08/811,108, filed on Mar. 3, 1997, now Pat. No. 6,272,121.

(51) Int. CI.7 H04B 7/216; H04J 13/02

(52) U.S. CI 370/335; 370/342; 370/349;

370/469; 375/142; 375/146; 375/150; 455/38.1;

455/450

(58) Field of Search 370/277, 280,

370/294, 329, 335, 337, 342, 347, 349, 465, 469; 375/130, 140, 141, 142, 146, 147, 150, 346, 347, 348; 455/38.1, 450, 451, 452, 507, 509, 517

(56) References Cited

U.S. PATENT DOCUMENTS

4,418,393 A 11/1983 Zschiele, Jr. 364/724

4,688,210 A 8/1987 Eizenhofer et al 370/18

5,029,180 A * 7/1991 Cowart 375/141

5,042,082 A 8/1991 Dahlin 455/33

5,200,956 A 4/1993 Pudney et al 370/95.1

5,241,690 A 8/1993 Larsson et al 455/54.1

5,278,835 A 1/1994 Ito et al 370/95.3

5,313,457 A 5/1994 Hostetter et al 370/18

5,410,568 A 4/1995 Schilling 375/205

5,416,797 A 5/1995 Gilhousen et al 375/705

5,434,859 A 7/1995 Levardon 370/84

5,454,028 A 9/1995 Hara et al 379/61

5,455,822 A 10/1995 Dixon et al 370/18

5,467,367 A 11/1995 Izumi et al 375/206

5,469,468 A 11/1995 Schilling 375/200

5,481,533 A 1/1996 Honig et al 370/18

5,483,676 A 1/1996 Mahany et al 455/67.4

5,490,136 A 2/1996 Sereno et al 370/18

5,506,837 A 4/1996 Sollner et al 370/31

5,506,864 A * 4/1996 Schilling 370/342

5,511,067 A 4/1996 Miller 370/18

5,625,888 A * 4/1997 Ruther et al 455/462

6,163,546 A * 12/2000 Sipila 370/466

6,317,424 Bl * 11/2001 Euscher 370/350

6,400,949 Bl * 6/2002 Bielefeld et al 455/434

OTHER PUBLICATIONS

"Air Interface Consideration", Joint Experts Meeting, Rockell IntT. Nov. 9, 1992.

European digital cellular telecommunications system (phase

1); Mobile Station—Base Station System (MS-BSS) interface data link layer specification, I-ETS 300 021, May 1992. European digital cellular telecommunications system (phase

2); Mobile Station—Base Station (MS-BSS) inteface Data Link (DL) layer specification (GSM 04.06), ETS 300 555, Sep. 1994.

(Continued)

Primary Examiner—Alpus H. Hsu

(74) Attorney, Agent, or Firm—Stuart A. Whittington

(57) ABSTRACT

A spread spectrum transmitter adapted for transmitting input data streams from a DECT (Digital European Cordless Telecommunication System) MAC (medium-access control) layer, where the data streams conform to a DECT physical layer packet structure. A related spread spectrum receiver is also disclosed.

21 Claims, 9 Drawing Sheets

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OTHER PUBLICATIONS

Gardner, Mike, "Testing for a New Technology," Telecommunication, Oct. 1993, pp. 51-53.

Mohanty, Nirode C, "Spread Spectrum and Time Division Multiple Access Satellite Communications", IEEE Transactions on Communications, Com-25(8):810-815, Aug. 1997. Radio Equipment and Systems Digital European Cordless Telecommunications (DECT) Reference document, ETR 015, Mar. 1991.

Radio Equipment and Systems (RES); Digital European Cordless Telecommunications (DECT) Common interface

services and facilities requirements specification, ETR 043, Jul. 1992.

Radio Equipment and Systems (RES); Digital European Cordless Telecommunications (DECT) Common interface Part 9: Public access profile, ETS 300 175-9, Oct. 1992.

Omnipoint Corporation—Omnipoint IS-661-Based Composite CDMA/TDMA PCS System Overview, Dated: Jun. 1995.

* cited by examiner

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