Narrow beam antenna systems with angular diversity

Details Narrow beam antenna systems with angular diversity Narrow beam antenna systems with angular diversity

1995-08-28

1997-07-15

Marcelo, Melvin

Multiplex communications

Communication over free space

Having a plurality of contiguous regions served by...

375299, H04J 1300

Patent

active

056489684

ABSTRACT:
A transmitting system (80) is disclosed which includes several antennas (801-803) providing a plurality of antenna beams. The transmit signal from transmitter 81 is sent to the plurality of antennas via routing circuitry (82). The transmit signal is divided into two or more identical signals, each delayed by a selected amount. The particular antenna to which the undelayed signal, the first delayed signal and each other delayed signal is sent is selected for any instant depending on control signals provided by control (83). Control (83), in turn, could operate from a number of factors, one being the relative strengths of the received signals at each of the antennas for that particular channel. The amount of delay could, if desired, also be controlled by control (83).

REFERENCES:
patent: 5280472 (1994-01-01), Gilhousen et al.
patent: 5347535 (1994-09-01), Karasawa et al.
patent: 5437055 (1995-07-01), Wheatley, III
patent: 5479397 (1995-12-01), Lee
patent: 5504936 (1996-04-01), Lee
patent: 5563610 (1996-10-01), Reudink
Dennis A. Jiraud, "Broadband CDMA for Wireless Communication," Applied Microwave & Wireless, pp. 22-34, (nondated).
CDMA Network Engineering Handbook, Draft Version XI, Chapter 2, pp. 2-1 through 2-12, (nondated).

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