Power control for CDMA communication systems

Details Power control for CDMA communication systems Power control for CDMA communication systems

1995-06-30

1997-05-13

Olms, Douglas W.

Multiplex communications

Communication over free space

Having a plurality of contiguous regions served by...

370342, 370522, 455 383, H04J 1300

Patent

active

056299346

ABSTRACT:
A transmitter transmits the desired signal using a continuous duty cycle at transmission rates of less than full rate (FIG. 6 ). The energy used in each power control group is related to the transmission rate. By repeating the power control groups, time division diversity (FIG. 6 ) is provided. In the receiver, the received power control groups are analyzed and compared to several levels of energy thresholds (73, 75, 77, 79). The results of the comparisons are converted into a power control signal (74, 76, 78, 80, 81) and returned to the mobile. The mobiles are capable of selecting the appropriate bit (93) and adjusting their power (94). Alternatively, an indicator of the transmission rate can be forwarded (155) in advance of the frame. The receiver compares a power estimate with the threshold for the transmission rate indicated (166).

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patent: 5530716 (1996-06-01), Lipa
Gateway to the Future Technology in Motion, 41st IEEE Vehicular Technology Conference, May 19-22, 1991, St. Louis, MO.
TIA/EIA/IS-95, Section 6 pp. 7-20 and Section 7 pp. 1-38.

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