Method and apparatus for optimization of wireless multipoint...

Telecommunications – Transmitter – Diversity

Reexamination Certificate

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C455S132000, C455S272000

Reexamination Certificate

active

09878789

ABSTRACT:
Exploiting the substantive reciprocity of internode channel responses through dynamic, adaptive modification of receive and transmit weights, enables locally enabled global optimization of a multipoint, wireless electromagnetic communications network of communication nodes. Each diversity-channel-capable node uses computationally efficient exploitation of pilot tone data and diversity-adaptive signal processing of the weightings and the signal to further convey optimization and channel information which promote local and thereby network-global efficiency. The preferred embodiment performs complex digital signal manipulation that includes a linear combining and linear distribution of the transmit and receive weights, the generation of piloting signals containing origination and destination node information, as well as interference-avoiding pseudorandom delay timing, and both symbol and multitone encoding, to gain the benefit of substantive orthogonality at the physical level without requiring actual substantive orthogonality at the physical level.

REFERENCES:
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patent: 5649286 (1997-07-01), Frerking
patent: 6108565 (2000-08-01), Scherzer
patent: 6317411 (2001-11-01), Whinnett et al.
patent: 6351499 (2002-02-01), Paulraj et al.
patent: 6836469 (2004-12-01), Wu

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