Pulse or digital communications – Transmitters – Angle modulation
Reexamination Certificate
2005-07-20
2011-10-11
Liu, Shuwang (Department: 2611)
Pulse or digital communications
Transmitters
Angle modulation
C375S295000
Reexamination Certificate
active
08036309
ABSTRACT:
A method is provided which improves reliability of channel estimation in a digital communication system by reducing the ambiguity in the recognition of received symbols evaluated for the channel estimation. A data word transmitted according to a first mapping of data word values to modulation states is re-transmitted at least once with a second, re-arranged mapping of data word values to modulation states. The second mapping and possible further mappings are generated from the first mapping in a way that the number of different results which can be obtained from combining the transmitted original data symbol and the re-transmitted counterpart data symbol(s) is lower than the number of original modulation states in the first mapping.
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Golitschek Edler Von Elbwart Alexander
Wengerter Christian
Yoshii Isamu
Dickinson Wright PLLC
Liu Shuwang
Neff Michael
Panasonic Corporation
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