United States Patent [«]
Gilhousen et al.
[54] CDMA MICROCELLULAR TELEPHONE SYSTEM AND DISTRIBUTED ANTENNA SYSTEM THEREFOR
[75] Inventors: Klein S. Gilhousen, San Diego;
Franklin P. Antonio, Del Mar, both of Calif.
[73] Assignee: Qualcomm Incorporated, San Diego, Calif.
[21] Appl. No.: 849,651
[22] Filed: Mar. 9,1992
Related U.S. Application Data
[63] Continuation of Ser. No. 624,118, Dec. 7, 1990, abandoned.
[51] Int. Q.5 H04J 13/00
[52] U.S. CI 370/18; 342/375;
375/1; 455/279.1
[58] Field of Search 370/18, 93, 19; 375/1;
380/34; 455/273, 278.1, 279.1, 276.1; 343/853;
342/375
[56] References Cited
U.S. PATENT DOCUMENTS
4,383,327 5/1983 Timor 370/93
4,475,215 10/1984 Gutleber 370/18
IIIII1IIIIII1IIIISIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIISIIIIIIIIIIII
USO0528O472A
[ii] Patent Number: 5,280,472 [45] Date of Patent: Jan. 18,1994
4,672,658 6/1987 Kavehrad et al 379/63
4,761,778 8/1988 Hui 370/60
4,841,527 6/1989 Raychaudhuri 371/32
4,901,307 2/1990 Gilhousen 370/18
4,920,348 4/1990 Baghdady 455/283 X
4,984,247 1/1991 Kaufmann 375/1
5,046,066 9/1991 Messenger 370/18
5,056,109 10/1991 Gilhousen et al 375/1
5,073,900 12/1991 Mallinckrodt 370/18
5,101,501 3/1992 Gilhousen et al 375/1 X
5,103,459 4/1992 Gilhousen et al 375/1
5,109,390 4/1992 Gilhousen et al 375/1
Primary Examiner—Douglas W. Olms
Assistant Examiner—Melvin Marcelo
Attorney, Agent, or Firm—Russell B. Miller; Katherine
W. Walker
[57] ABSTRACT
A code division multiple access (CDMA) communication system in which cellular techniques are utilized in a wireless Private Branch Exchange (PBX) environment. A microcellular arrangement is defined in which a base station communicates user information signals using CDMA communication signals with subscriber terminals. A distributed antenna system is utilized in the system to provide multipath signals which facilitate signal diversity for enhanced system performance.
37 Claims, 4 Drawing Sheets"
