(12) United States Patent ao) Patent No.: us 6,370,130 Bi
Zhou et al. (45) Date of Patent: Apr. 9,2002
(54) SPREAD SPECTRUM COMMUNICATION SYSTEM
(75) Inventors: Changming Zhou; Guoliang Shou;
Xuping Zhou; Kunihiko Suzuki;
Makoto Yamamoto, all of Tokyo (JP)
(73) Assignee: Yozan, Inc., tokyo (JP)
( * ) Notice: Subject to any disclaimer, the term of this patent is extended or adjusted under 35 U.S.C. 154(b) by 0 days.
(21) Appl. No.: 09/092,914
(22) Filed: Jun. 8, 1998
(30) Foreign Application Priority Data
Jun. 9, 1997 (JP) 9-164919
Jun. 26, 1997 (JP) 9-184641
Sep. 18, 1997 (JP) 9-272251
Oct. 16, 1997 (JP) 9-299377
Oct. 23, 1997 (JP) 9-308096
Nov. 14, 1997 (JP) 9-329646
Dec. 5, 1997 (JP) 9-352472
(51) Int. CI.7 H04B 7/216
(52) U.S. CI 370/335; 370/342; 375/143;
375/152
(58) Field of Search 370/342, 335;
375/140, 143, 152, 145, 146, 148
(56) References Cited
U.S. PATENT DOCUMENTS
5,790,588 A * 8/1998 Fukawa et al.
