Variable rate soft information forwarding

Multiplex communications – Communication over free space – Repeater

Reexamination Certificate

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C370S252000

Reexamination Certificate

active

07821980

ABSTRACT:
A method including transmitting a binary vector from a source node to a relay node and receiving a signal vector at the relay node. The method also includes compressing the signal at the relay node by multiplying the signal with a matrix using probabilities and converting output probabilities from the multiplying into retransmission signal amplitudes, the signal amplitude depending not only on a probability of a bit but on a transmission power constraint at the relay node. The method also includes transmitting, by the relay node, estimates of information from the source node to a destination node.

REFERENCES:
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patent: 2005/062494 (2005-07-01), None
Sneessens, Harold H., et al. “Soft Decode and Forward Improves Cooperative Communications,” Nov. 2005, pp. 157-160.
Dong, Bo, et al. “LDPS-based Distributed Space Time Cooperative Systems with Non-regenerative Relays”, Oct. 28-Nov. 1, 2005, pp. 1419-1423.
International search report PCT/IB2007/001496 filed Jun. 6, 2007.
Notification of the first Office Action dated Nov. 27, 2009, issued by the Patent Office of the People's Republic of China, issued in connection with counterpart Chinese application No. 200710136098.3.
Sneessens et al., “Soft Decode and Forward Improves Cooperative Communications”, 1stIEEE International Workshop on Computational Advances in Multi-Sensor Adaptive Processing, pp. 157-160, Dec. 2005.

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