Telecommunications – Transmitter – Diversity
Patent
1994-10-13
1996-11-12
Faile, Andrew
Telecommunications
Transmitter
Diversity
455 523, 455 59, 375347, H04B 706
Patent
active
055749895
ABSTRACT:
A cellular base station (10) in a digital cellular system employs transmitting circuitry in which voice signals (15) are processed at a low frequency level (12) into two separate paths. A first of the low frequency signals is variably delayed (20), and the first and the other low frequency signals are upconverted to radio frequency level (16,22) for transmission over independent time-spaced transmission paths (26,28) to cellular receivers. A receiver downconverts and demodulates the radio frequency diversity signals, and then combines the demodulated diversity signals to generate an equalized combination diversity signal for receiver output processing.
REFERENCES:
patent: 4896371 (1990-01-01), Kahn
patent: 5203018 (1993-04-01), Hirose
patent: 5319677 (1994-06-01), Kim
Huynh Long
Kim Youngky
Parr Michael
Watson John
Denson-Low Wanda K.
Faile Andrew
Hughes Electronics
Lindeen III Gordon R.
To Doris
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