Multiplex communications – Fault recovery – Bypass an inoperative channel
Patent
1997-11-13
2000-08-08
Marcelo, Melvin
Multiplex communications
Fault recovery
Bypass an inoperative channel
370342, H04J 1300
Patent
active
061011681
ABSTRACT:
An efficient retransmission of data using symbol accumulation wherein the packet received in error is retransmitted at a lower energy-per-bit level concurrently in the same frame with the new packet. The destination device receives the data transmission and retransmission, demodulate the signal, and separates the received data into the new and retransmitted packet. The destination device then accumulates the energy of the retransmitted packet with the energy already accumulated for the packet received in error and decodes the accumulated packet. The accumulation of the additional energy provided by the subsequent retransmissions improves the probability of a correct decoding. The throughput rate can be improved since the packet received in error is retransmitted concurrently with the transmission of the new data packet. The capacity is maximized since the retransmission of the packet received in error is at a lower energy level than that of the new packet.
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"R-RAKE: A Concept Suitable for IMT-2000.", by Mike Ketseoglou, Jan. 5-9, 1998, pp. 1-16.
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Chen Tao
Odenwalder Joseph P.
Tiedemann Jr. Edward G.
Willenegger Serge
Kalousek Pavel
Marcelo Melvin
Qualcomm Inc.
Rouse Thomas R.
Wadsworth Philip
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