Spread spectrum communication system and transmission power cont

Details Spread spectrum communication system and transmission power cont Spread spectrum communication system and transmission power cont

1996-07-11

1999-02-09

Safourek, Benedict V.

Multiplex communications

Communication over free space

Having a plurality of contiguous regions served by...

455 69, 455522, 370342, H04B 7216

Patent

active

058703934

ABSTRACT:
In a spread spectrum communication system, one (W.sub.n) of a series of orthogonal codes for spectrum spreading is assigned to signal-to-noise ratio measurement in a terminal. On the basis of a noise signal detected by de-spreading a signal received from an antenna with the above described orthogonal code W.sub.n and a pilot signal, each terminal derives a signal-to-noise ratio. Each terminal transmits the signal-to-noise ratio to the base station as a power control signal. On the basis of signal-to-noise information received from each terminal as the power control signal, the base station controls signal transmission power for each terminal.

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A. Salmasi, K.S. Gilhousen "On the System Design Aspects of Code Division Multiple Access (CDMA) Applied to Digital Cellular and Personal Communications Network", IEEE VTS 1991, pp. 57-62.
"Hybrid CDMA Sytem Using Microcells and Macrocells" by Nobukazu Doi, et al., PIMRC '93, pp. 518-521

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