Transmitter and method for transmitting information packets with incremental redundancy
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United States of America Patent
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-
Aug 12, 1997
Issued Date -
N/A
app pub date -
Apr 26, 1996
filing date -
Mar 31, 1995
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
The present invention provides an improved wireless transmitter and method for transmitting incremental redundancy. In one illustrative embodiment of the present invention, switched antenna diversity is used in conjunction with punctured error correction codes to provide an independently fading channel for the punctured bits. In this embodiment, the transmitter includes an error correction encoder which outputs a punctured packet and punctured bits encoded from the information packet. The transmitter further includes a modulator for modulating the punctured packet and punctured bits, a first antenna for transmitting the modulated punctured packet to a receiver, and a second antenna for transmitting one or more of the punctured bits to the receiver, in response to a negative acknowledgment received by the transmitter. The first and second antennas in this embodiment are positioned to provide first and second channels having independent fading characteristics.
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